WHATS_NEW

   1 Version 2.02.95 -
   2 ================================
   3
   4 Version 2.02.94 - 3rd March 2012
   5 ================================
   6   Add support to execute thin_check with each de/active of thin pool.
   7   Fix automatic estimation of metadata device size for thin pool.
   8   Test for alloc fail from _alloc_pv_segment() in _extend_pv().
   9   Check for alloc fail from get_segtype_from_string() in _lvcreate_params().
  10   Add _rimage as reserved suffix to lvm.8 man page.
  11   Improve error logging from mpath filter.
  12   Check for allocation failure in hold_lock() in clvmd.
  13   Use set_lv() (wipe initial 4KiB) for non zeroed thin volume.
  14   Allow cluster mirrors to handle the absence of the checkpoint lib (libSaCkpt).
  15   Revert free of allocated segtype in init segment error path (2.02.89).
  16   Test dm_hash_insert() failures in filter-persistent.c and fid_add_mda().
  17   Ensure clvmd message is always NUL-terminated after read.
  18   Add some close() and dev_close() error path backtraces.
  19   Set stdin/stdout/stderr to /dev/null for polldaemon.
  20   Limit the max size of processed clvmd message to ~8KB.
  21   Do not send uninitialised bytes in cluster error reply messages.
  22   Use unsigned type for bitmask instead of enum type for lvm properties.
  23   Add missing cleanup of excl_uuid hash on some exit paths of clvmd.
  24   Check for existence of vg_name in _format1/_pool_vg_read().
  25   Fix missing break in _format_pvsegs (2.02.92).
  26   Test seg pointer for non-null it in raid_target_percent error path.
  27   Check for errors in _init_tags() during config loading.
  28   Always check result of _set_vg_name() in lvcreate.
  29   Drop unused call to uname() during clvmd initialization.
  30   Test allocation result in sysfs filter creation.
  31   Limit sscanf parameters with buffer size in clvmd get_initial_state().
  32   Use const lv pointer for lv_is_active...() functions.
  33   Use same signed numbers in _mirrored_transient_status().
  34   Support 'pvscan --cache' to update lvmetad state from specific PVs.
  35   Provide new metadata daemon for testing with configure --enable-lvmetad .
  36   Integrate client-side lvmetad into build.
  37
  38 Version 2.02.93 - 23rd February 2012
  39 ====================================
  40   Require number of stripes to be greater than parity devices in higher RAID.
  41   Fix allocation code to allow replacement of single RAID 4/5/6 device.
  42   Check all tags and LV names are in a valid form in vg_validate.
  43   Add tmpfiles.d style configuration for lvm2 lock and run directory.
  44   Add configure --with-tmpfilesdir for dir holding volatile-file configuration.
  45   Allow 'lvconvert --repair' to operate on RAID 4/5/6.
  46   Fix build_parallel_areas_from_lv to account correctly for raid parity devices.
  47   Print message when faulty raid devices have been replaced.
  48
  49 Version 2.02.92 - 20th February 2012
  50 ====================================
  51   Read dmeventd monitoring config settings for every lvm command.
  52   For thin devices, initialize monitoring only for thin pools not thin volumes.
  53   Make conversion from a synced 'mirror' to 'raid1' not cause a full resync.
  54   Properly test buffer for unit check in units_to_bytes().
  55   Add configure --with-systemdsystemunitdir.
  56   Add check for allocation failure in _build_matcher().
  57   Add check for rimage name allocation failure in _raid_add_images().
  58   Add check for mda_copy failure in _text_pv_setup().
  59   Add check for _mirrored_init_target failure.
  60   Add free_orphan_vg.
  61   Skip pv/vg_set_fid processing if the fid is same.
  62   Check for foreach loop errors in _vg_read_orphans() (2.02.91).
  63   Clean error paths for format instance creation (2.02.91).
  64   Release vg in error path of _format1_vg_read() instead of just free().
  65   Report allocation failure for allocation of PV structure.
  66   Add clvmd init dependency on dlm service when running with new corosync.
  67
  68 Version 2.02.91 - 12th February 2012
  69 ====================================
  70   Remove PV-based format instances (which are no longer needed).
  71   Link all orphan PVs directly to a per-format global orphan VG.
  72   Refactor lvmcache around an internal API.
  73   Stop processing lvextend if trying to extend a mirror that is being recovered.
  74   Add pool_below_threshold() function to check thin pool percent status.
  75   Fix test for snap percent for failing merge when removing LV.
  76   Switch int to void return for str_list_del().
  77   Fix error path handling in _build_desc().
  78   Add range test for device number in _scan_proc_dev().
  79   Use signed long for sysconf() call in cmirrord.
  80   Do not write in front of log buffer in print_log().
  81   Add boundary test for number of mirror devs and logs.
  82   Check that whole locking_dir fits _lock_dir buffer in init_file_locking().
  83   Use list functions for label_exit().
  84   Ensure strncpy() function always ends with '\0'.
  85   Set status in _fsadm_cmd() for error path.
  86   Add missing deps for lvm2api for rebuild when lvm-internal is changed.
  87   Fix resource leaks for failing allocation of formats (lvm1/2,pool).
  88   Release allocated resources in error path for composite_filter_create().
  89   Do not use lstat() results when failed in _rm_link().
  90   Remove a "waiting for another thread" log message from dmeventd plugins.
  91
  92 Version 2.02.90 - 1st February 2012
  93 ===================================
  94   sync_local_dev_names before (re)activating mirror log for initialisation.
  95   Disable partial activation for thin LVs and LVs with all missing segments.
  96   Do not print warning for pv_min_size between 512KB and 2MB.
  97   Clean up systemd unit ordering and requirements.
  98   Fix lcov reports when srcdir != builddir.
  99   Allow ALLOC_NORMAL to track reserved extents for log and data on same PV.
 100   Automatically detect whether corosync clvmd needs to use confdb or cmap.
 101   Fix data% report for thin volume used as origin for non-thin snapshot.
 102
 103 Version 2.02.89 - 26th January 2012
 104 ===================================
 105   Add missing check for uname result in clvmd TEST processing.
 106   Fix memleak in target_version() error path (unsupported LIST_VERSIONS).
 107   Limit data_alignment and data_alignment_offset to 32bit values.
 108   Check for correctness of uint64 dev_size value in format_text.
 109   Thin pools have segment fields thin_count, zero, transaction_id.
 110   Add data_percent and metadata_percent for thin pools to lvs -v.
 111   Add data_lv & metadata_lv fields to lvs for thin pools.
 112   Add data_percent & pool_lv fields to lvs for thin volumes.
 113   Rename origin_only parm to use_layer for lv_info and use with thin LVs.
 114   Add lv_thin_pool_transaction_id to read the transaction_id value.
 115   Use {suspend,resume}_origin_only when up-converting RAID, as mirrors do.
 116   Always add RAID metadata LVs to deptree (even when origin_only is set).
 117   Change exclusive LV activation logic to try local node before remote nodes.
 118   Add CLVMD_FLAG_REMOTE to skip processing on local node.
 119   Prompt if request is made to remove a snapshot whose "Merge failed".
 120   Allow removal of an invalid snapshot that was to be merged on next activation.
 121   Don't allow a user to merge an invalid snapshot.
 122   Use m and M lv_attr to indicate that a snapshot merge failed in lvs.
 123   Differentiate between snapshot status of "Invalid" and "Merge failed".
 124   Report snapshot usage percent of origin volume when a snapshot is merging.
 125   Require global/lvdisplay_shows_full_device_path for (bogus) lvm1-style paths.
 126   Do not report linear segtype for non-striped targets.
 127   Record creation host & time for each LV and report as lv_time & lv_host.
 128   Make error message hit when preallocated memlock memory exceeded clearer.
 129   Use R lv_attr to indicate read-only activation of non-read-only device in lvs.
 130   Show read-only activation override in lvdisplay & add 4 to perms in -c.
 131   Add activation/read_only_volume_list to override LV permission in metadata.
 132   Give priority to emcpower devices with duplicate PVIDs.
 133   Add check for error in _adjust_policy_params() (lvextend --use-policies).
 134   Round specified percentages upwards (%LV, %VG...) when resizing LVs.
 135   Use dmeventd_lvm2_command in dmeventd plugins snapshot, raid, mirror.
 136   Add helper dmeventd_lvm2_command() to libdevmapper-event-lvm2 library.
 137   Update documentation for dmeventd.
 138   Remove unnecessary stat before opening device in dev_open_flags.
 139   Reduce number of lstat calls when selecting device alias.
 140   Add _dev_init to initialize common struct device members.
 141   Always zalloc struct device during initialization.
 142   Fix missing thread list manipulation protection in dmeventd.
 143   Do not derefence lv pointer in _percent_run() function before NULL check.
 144   Allow empty strings for description and creation_host config fields.
 145   Issue deprecation warning when removing last lvm1-format snapshot.
 146   Reinstate support for snapshot removal with lvm1 format. (2.02.86)
 147   Add policy-based automated repair of RAID logical volumes.
 148   Don't allow two images to be split and tracked from a RAID LV at one time.
 149   Don't allow size change of RAID LV that is tracking changes for a split image.
 150   Don't allow size change of RAID sub-LVs independently.
 151   Don't allow name change of RAID LV that is tracking changes for a split image.
 152   Do not allow users to change the name of RAID sub-LVs independently.
 153   Do not allow users to change permissions on RAID sub-LVs.
 154   Allow lvconvert to replace specified devices in a RAID array.
 155   Add activation/use_linear_target enabled by default.
 156   Use gcc warning options only with .c to .o compilation.
 157   Move y/n prompts to stderr and repeat if response has both 'n' and 'y'.
 158   Replace the unit testing framework with CUnit (--enable-testing).
 159   Fix dmeventd snapshot monitoring when multiple extensions were involved.
 160   Don't ignore configure --mandir and --infodir.
 161   Drop pool memory allocated within lv_has_target_type().
 162   Reduce stack allocation of some PATH_MAX sized char buffers.
 163   Unlock memory before writing metadata.
 164   Add query before removing snapshots when inactive snapshot origin is removed.
 165   Allow changing availability state of snapshots.
 166   Skip non-virtual snapshots for availability change for lvchange with vg name.
 167   Skip adjusting mirror region size unless mirror or raid.
 168   Reorder prompt conditions for removal of active volumes.
 169   Avoid 'mda inconsistency' by properly registering UNLABELLED_PV flag.(2.02.86)
 170   Fix --enable-static_link unless using --enable-dmeventd / --enable-udev_sync.
 171   Move gentoo MAKEDEV to /sbin in lvm2create_initrd.
 172   Add filter to avoid scan of device if it is part of active multipath.
 173   Add missing default $LVM_VG_NAME usage for snapshots.
 174   Avoid extent_count overflow with lvextend.
 175   Add missing lvrename mirrored log recursion in for_each_sub_lv.
 176   Improve lv_extend stack reporting.
 177   Increase virtual segment size instead of creating multiple segment list.
 178   Add last_seg(lv) internal function.
 179   Support empty string for log/prefix.
 180   Disallow mirrored logs for cluster mirrors. (2.02.72)
 181   Don't print char type[8] as a plain string in pvck PV type.
 182   Use vg memory pool implicitly for vg read.
 183   Always use vg memory pool for allocated lv segment.
 184   Remove extra 4kB buffer allocated on stack in print_log().
 185   Make move_lv_segment non-static function and use dm_list function.
 186   Pass exclusive LV locks to all nodes in the cluster.
 187   Improve lvcreate chunksize man page description.
 188   Improve man page style for lvcreate & lvs.
 189   Avoid recursive calls to dmeventd in its LVM plugins.
 190   Log dev name now returned to kernel for registering during cmirror CTR.
 191   Fix lv_info open_count test for disabled verify_udev_operations. (2.02.86)
 192   Simplify code for lvm worker thread in clvmd.
 193   Use pthread_barrier to synchronize clvmd threads at startup.
 194   Limit clvmd's thread size to 128KiB and ignore activation/reserved_stack.
 195   Reduce default preallocated stack size to 64KiB.
 196   Add check for access through NULL pointer when refresh_filter() fails.
 197   Use pthread condition for SINGLENODE lock implementation.
 198   Improve backtrace reporting for some dev_manager_ functions.
 199   Change message severity to log_warn when symlink creation fails.
 200   Add ability to convert mirror segtype to RAID1 segtype.
 201   Add ability to convert from linear to RAID1.
 202   Add ability to extend mirrors with '--nosync' option.
 203   Fix splitmirror LV names to maintain consistent state in a cluster.
 204   Apply appropriate udev flags when suspending/resuming mirror sub-LVs.
 205   Fix vgsplit to handle mirrored logs.
 206   Clarify multi-name device filter pattern matching explanation in lvm.conf.
 207   Introduce revert_lv for better pvmove cleanup.
 208   Replace incomplete pvmove activation failure recovery code with a message.
 209   Abort if _finish_pvmove suspend_lvs fails instead of cleaning up incompletely.
 210   Change suspend_lvs to call vg_revert internally.
 211   Change vg_revert to void and remove superfluous calls after failed vg_commit.
 212   Use execvp for CLVMD restart to preserve environment settings.
 213   Restart CLVMD with same cluster manager.
 214   Fix log_error() usage in raid and unknown segtype initialisation.
 215   Improve testing Makefile.
 216   Fix install_ocf make target when srcdir != builddir. (2.02.80)
 217   Support env vars LVM_CLVMD_BINARY and LVM_BINARY in clvmd.
 218   Fix restart of clvmd (preserve exlusive locks). (2.02.64)
 219   Add 'Volume Type' lv_attr characters for RAID and RAID_IMAGE.
 220   Add activation/retry_deactivation to lvm.conf to retry deactivation of an LV.
 221   Replace open_count check with holders/mounted_fs check on lvremove path.
 222   Disallow the creation of mirrors (mirror or raid1 segtype) with only one leg.
 223   Cleanup restart clvmd code (no memory allocation, debug print passed args).
 224   Add all exclusive locks to clvmd restart option args.
 225   Always send the whole clvmd packet header in refresh commands.
 226   Add missing error checks for some system calls in cmirrord.
 227   Add missing log_error() to lvresize command when fsadm tool fails.
 228   Add support for DM_DEV_DIR device path into fsadm script.
 229   Support different PATH setting for fsadm script testing.
 230   Surround all executed commands with quotes in fsadm script.
 231   Fix missing '$' in test for content of "$LVM" in fsadm script.
 232   Move debug message in exec_cmd after sync_local_dev_names.
 233   Fix clvmd processing of invalid request on local socket.
 234   Fix command line option decoding.
 235   Reset LV status when unlinking LV from VG.
 236   Fix overly-strict extent-count divisibility requirements for striped mirrors.
 237   Fix rounding direction in lvresize when reducing volume size.
 238   Fix possible overflow of size if %FREE or %VG is used.
 239   Fix vgchange activation of snapshot with virtual origin.
 240   Activate virtual snapshot origin exclusively (only on local node in cluster).
 241   Fix lv_mirror_count to handle mirrored stripes properly.
 242   Fix failure to down-convert a mirror to linear due to udev "dev open" conflict
 243   Fix mirrored log creation when PE size is small: use log_size >= region_size.
 244   Fix log size calculation when only a log is being added to a mirror.
 245   Add 7th lv_attr char to show the related kernel target.
 246   Terminate pv_attr field correctly. (2.02.86)
 247   Fix 'not not' typo in pvcreate man page.
 248   Improve man page style for fsadm, lvreduce, lvremove, lvrename & lvresize.
 249   Support break for vgchange and vgrefresh operation.
 250   Switch int to unsigned type for pvmetadatacopies for pv_create().
 251   Replace :space: with [\t ] for awk in vgimportclone (not widely supported).
 252   Begin using 64-bit status field flags.
 253   Detect sscanf recovering_region input error in cmirrord pull_state().
 254   Fix error path bitmap leak in cmirrord import_checkpoint().
 255   Log unlink() error in cmirrord remove_lockfile().
 256   Remove incorrect requirement for -j or -m from lvchange error message.
 257   Fix unsafe table load when splitting off smaller mirror from a larger one.
 258   Use size_t return type for text_vg_export_raw() and export_vg_to_buffer().
 259   Add configure --enable-lvmetad for building the (experimental) LVMetaD.
 260   Fix resource leak when strdup fails in _get_device_status() (2.02.85).
 261   Directly allocate buffer memory in a pvck scan instead of using a mempool.
 262   Add configure --with-thin for segtypes "thin" and "thin_pool".
 263   Fix raid shared lib segtype registration (2.02.87).
 264
 265 Version 2.02.88 - 19th August 2011
 266 ==================================
 267   Remove incorrect 'Breaking' error message from allocation code. (2.02.87)
 268   Add lvconvert --merge support for raid1 devices split with --trackchanges.
 269   Support lvconvert of -m1 raid1 devices to a higher number.
 270   Add --trackchanges support to lvconvert --splitmirrors option for raid1.
 271   Support splitting off a single raid1 rimage in lvconvert --splitmirrors.
 272   Use sync_local_dev_names when reducing number of raid rimages in lvconvert.
 273   Add -V as short form of --virtualsize in lvcreate.
 274   Fix make clean not to remove Makefile.  (2.02.87)
 275
 276 Version 2.02.87 - 12th August 2011
 277 ==================================
 278   Fix make distclean to remove stray dmeventd and exported symbols files.
 279   Add global/detect_internal_vg_cache_corruption to lvm.conf.
 280   Use memory pool locking to check for corruption of internal VG structs.
 281   Cache and share generated VG structs.
 282   Fix possible format instance memory leaks and premature releases in _vg_read.
 283   Suppress locking error messages in monitoring init scripts.
 284   If pipe in clvmd fails return busy instead of using uninitialised descriptors.
 285   Add ability to reduce the number of mirrors in raid1 arrays to lvconvert.
 286   Add dmeventd plugin for raid.
 287   Replace free_vg with release_vg and move it to vg.c.
 288   Remove INCONSISTENT_VG flag from the code.
 289   Remove lock from cache in _lock_vol even if unlock fails.
 290   Initialise clvmd locks before lvm context to avoid open descriptor leaks.
 291   Remove obsolete gulm clvmd cluster locking support.
 292   Suppress low-level locking errors and warnings while using --sysinit.
 293   Remove unused inconsistent_seqno variable in _vg_read().
 294   Remove meaningless const type qualifiers on cast type.
 295   Add test for fcntl error in singlenode client code.
 296   Remove --force option from lvrename manpage.
 297   Add global/mirror_segtype_default to pick md raid or dm mirror as default.
 298   Add configure --with-raid for new segtype 'raid' for MD RAID 1/4/5/6 support.
 299   Change DEFAULT_UDEV_SYNC to 1 so udev_sync is used if there is no config file.
 300   Add systemd unit file to provide lvm2 monitoring.
 301   Compare file size (as well as timestamp) to detect changed config file.
 302
 303 Version 2.02.86 - 8th July 2011
 304 ===============================
 305   Remove unnecessary warning in pvcreate for MD linear devices.
 306   Move snapshot removal activation logic into lib/activate.
 307   Cope with a PV only discovered missing when creating deptree.
 308   Abort operation if dm_tree_node_add_target_area fails.
 309   Add activation/checks to lvm.conf to perform additional ioctl validation.
 310   Always preload on suspend, even if no metadata changed (lvchange --refresh).
 311   When suspending, automatically preload newly-visible existing LVs.
 312   Teardown any stray devices with $COMMON_PREFIX during test runs.
 313   Reinstate correct permissions when creating mirrors. [2.02.85]
 314   Append 'm' attribute to pv_attr for missing PVs.
 315   Annotate CLVMD_CMD_SYNC_NAMES in decode_cmd.
 316   Remove enforcement of udev verification when using non-standard /dev location.
 317   Keep an exclusive mirror non-clustered if reloaded e.g. during conversion.
 318   Reject allocation if number of extents is not divisible by area count.
 319   Fix cluster mirror creation to work with new mirror allocation algorithm.
 320   Ignore activation/verify_udev_operations if dm kernel driver vsn < 4.18.
 321   Add activation/verify_udev_operations to lvm.conf, disabled by default.
 322   Call vg_mark_partial_lvs() before VG structure is returned from the cache.
 323   Remove unused internal flag ACTIVATE_EXCL from the code.
 324   Remove useless test of ACTIVATE_EXCL in lv_add_mirrors() clustered code path.
 325   Add lv_activate_opts structure for activation (replacing activation flags).
 326   Ignore inconsistent pre-commit metadata on MISSING_PV devs while activating.
 327   Add proper udev library context initialization and finalization to liblvm.
 328   Fix last snapshot removal to avoid table reload while a device is suspended.
 329   Use dm_get_suspended_counter in replacement critical_section logic.
 330   Downgrade critical_section errors to debug level until it is moved to libdm.
 331   Fix ignored background polling default in vgchange -ay.
 332   Fix pvmove activation sequences to avoid trapped I/O with multiple LVs.
 333   Annotate critical section debug messages.
 334   Fix reduction of mirrors with striped segments to always align to stripe size.
 335   Validate mirror segments size.
 336   Include lvmetad development code in tree.
 337   Fix extent rounding for striped volumes never to reduce more than requested.
 338   Fix create_temp_name to replace any '/' found in the hostname with '?'.
 339   Always use append to file in lvmdump. selinux policy may ban file truncation.
 340   Propagate test mode to clvmd to skip activation and changes to held locks.
 341   Defer writing PV labels until vg_write.
 342   Store label_sector only in struct physical_volume.
 343   Permit --available with lvcreate so non-snapshot LVs need not be activated.
 344   Report sector containing label in verbose message.
 345   Clarify error message when unable to convert an LV into a snapshot of an LV.
 346   Add and use dev_open_readonly and variations.
 347   Do not log a superfluous stack message when the lv is properly processed.
 348   Do not issue an error message when unable to remove .cache on read-only fs.
 349   Avoid memlock size mismatch by preallocating stdio line buffers.
 350   Rewrite vgreduce --removemissing --force to share lvconvert code.
 351   Reorganize lvconvert --repair code to allow reuse.
 352
 353 Version 2.02.85 - 29th April 2011
 354 =================================
 355   Add new obtain_device_list_from_udev setting to lvm.conf.
 356   Obtain device list from udev by default if LVM2 is compiled with udev support.
 357   Add test for vgimportclone and querying of vgnames with duplicate pvs.
 358   Avoid use of released memory when duplicate PV is found.
 359   Add "devices/issue_discards" to lvm.conf.
 360   Issue discards on lvremove and lvreduce etc. if enabled and supported.
 361   Add seg_pe_ranges and devices fields to liblvm.
 362   Fix incorrect tests for dm_snprintf() failure.
 363   Fix some unmatching sign comparation gcc warnings in the code.
 364   Support lv_extend() on empty LVs.
 365   Avoid regenerating cache content when exported VG buffer is unchanged.
 366   Extend the set of memory regions that are not locked to memory.
 367   Workaround some problems when compiled for valgrind memcheck.
 368   Support controlled quit of the lvm_thread_fn function in clvmd.
 369   Fix reading of unallocated memory in lvm1 format import function.
 370   Replace several strncmp() calls with id_equal().
 371   Fix lvmcache_info transfer to orphan_vginfo in _lvmcache_update_vgname().
 372   Fix -Wold-style-definition gcc warnings.
 373   Rename MIRROR_NOTSYNCED to LV_NOTSYNCED.
 374   Fix _move_lv_segments to handle empty LVs.
 375   Fixes for lvconvert (including --repair) of temporary mirror stacks.
 376   Avoid potential loop when removing mirror images.
 377   Fix mirror removal always to take account of preferences as to which.
 378   Fix MIRRORED flag usage.
 379   Remove error messages issued by device_is_usable when run as non-root.
 380   Add missing \0 for grown debug object in _bitset_with_random_bits().
 381   Fix allocation of system_id buffer in volume_group structure.
 382   Fix readlink usage inside get_primary_dev().
 383   Use format instance mempool where possible and adequate.
 384   Call destroy_instance for any PVs found in VG structure during vg_free call.
 385   Add new free_pv_fid fn and use it throughout to free all attached fids.
 386   Use only vg_set_fid and new pv_set_fid fn to assign the format instance.
 387   Make create_text_context fn static and move it inside create_instance fn.
 388   Add mem and ref_count fields to struct format_instance for own mempool use.
 389   Use new alloc_fid fn for common format instance initialisation.
 390   Optimise _get_token() and _eat_space().
 391   Add _lv_postorder_vg() to improve efficiency for all LVs in VG.
 392   Add gdbinit script for debugging.
 393   Use hash tables to speedup string search in vg_validate().
 394   Refactor allocation of VG structure adding alloc_vg().
 395   Avoid possible endless loop in _free_vginfo when 4 or more VGs have same name.
 396   Use empty string instead of /dev// for LV path when there's no VG.
 397   Don't allocate unused VG mempool in _pvsegs_sub_single.
 398   Do not send uninitialised bytes in local clvmd messages.
 399   Support --help option for clvmd and return error for unknown option.
 400   Avoid reading freed memory when printing LV segment type.
 401   Fix syslog initialisation in clvmd to respect lvm.conf setting.
 402   Fix possible overflow in maximum stripe size and physical extent size.
 403   Improve pvremove error message when PV belongs to a VG.
 404   Extend normal policy to allow mirror logs on same PVs as images if necessary.
 405   Improve cling policy to recognise PVs already used during the transaction.
 406   Improve normal allocation algorithm to include clinging to existing areas.
 407   Add allocation/maximise_cling & mirror_logs_require_separate_pvs to lvm.conf.
 408   Adapt metadata balancing code to work with metadata handling changes.
 409   Add old_id field to physical_volume and fix pvchange -u for recent changes.
 410   Allow pvresize on a PV with two metadata areas.
 411   Change pvcreate to use new metadata handling interface.
 412   Restructure existing pv_setup and pv_write and add pv_initialise.
 413   Add internal interface to support adding and removing metadata areas.
 414   Allow internal indexing of metadata areas (PV id + mda order).
 415   Generalise internal format_instance infrastrusture for PV and VG use.
 416   Handle decimal digits with --units instead of ignoring them silently.
 417   Fix remaining warnings and compile with -Wpointer-arith.
 418   Fix gcc warnings for unused variables and const casts.
 419   Add stack backtraces for error paths in process_each_lv().
 420   Temporarily suppress error from calling yes_no_prompt while locks are held.
 421   Replace void* with char* arithmetic in _text_write, _text_read & send_message.
 422   Fix compilation without DEVMAPPER_SUPPORT.
 423   Remove fs_unlock() from lv_suspend error path.
 424   Allow memory to stay locked between leaving and re-entering critical sections.
 425   Rename memlock to critical_section throughout.
 426   Make pv_min_size configurable and increase to 2048KB to exclude floppy drives.
 427   Add find_config_tree_int64 to read 64-bit ints from config.
 428   Ensure resuming exclusive cluster mirror continues to use local mirror target.
 429   Clear temporary postorder LV status flags to allow re-use with same LV struct.
 430   Remove invalid snapshot umount mesg which floods syslog from dmeventd plugin.
 431   Add extended examples to pvmove man page.
 432   Support LVM_TEST_DEVDIR env var for private /dev during testing.
 433
 434 Version 2.02.84 - 9th February 2011
 435 ===================================
 436   Fix CRC32 calculation on big endian CPU (2.02.75).
 437
 438 Version 2.02.83 - 4th February 2011
 439 ===================================
 440   Allow exclusive activation of snapshots in a cluster.
 441   Leave EX lock unchanged when suspending a device in clvmd.
 442   Use sync_dev_names in unlock_vg macro for cluster-wide dev name sync.
 443   Fix fs operation stack handling when multiple operations on same device.
 444   Increase hash table size to 1024 lv names and 64 pv uuids.
 445   Remove fs_unlock() from lv_resume path.
 446   Fix wipe size when setting up mda.
 447   Remove unneeded checks for open_count in lv_info().
 448   Synchronize with udev before checking open_count in lv_info().
 449   Allow CLVMD_CMD_SYNC_NAMES to be propagated around the cluster if requested.
 450   Add "dmsetup ls --tree" output to lvmdump.
 451   Fix udev synchronization with no-locking --sysinit (2.02.80).
 452   Improve man page style consistency for pvcreate, pvremove, pvresize, pvscan.
 453   Avoid rebuilding of uuid validation table.
 454   Improve lvcreate error text from insufficient "extents" to "free space".
 455   Always use O_DIRECT when opening block devices to check for partitioning.
 456
 457 Version 2.02.82 - 24th January 2011
 458 ===================================
 459   Bring lvscan man page up-to-date.
 460   Fix lvchange --test to exit cleanly.
 461   Add change_tag to toollib.
 462   Allow multiple pvchange command line options to be specified together.
 463   Do not fail pvmove polling if another process cleaned up first.
 464   Avoid clvmd incrementing dlm lockspace reference count more than once.
 465   Add -f (don't fork) option to clvmd and fix clvmd -d<num> description.
 466
 467 Version 2.02.81 - 17th January 2011
 468 ===================================
 469   Do not scan devices in dev_reset_error_count().
 470   Skip unnecessary LOCK_NULL unlock call during volume deactivation.
 471   Skip fs_unlock when calling exec_cmd within activation code (for modprobe).
 472   Extend exec_cmd params to specify when device sync (fs_unlock) is needed.
 473   Replace fs_unlock by sync_local_dev_names to notify local clvmd. (2.02.80)
 474   Introduce sync_local_dev_names and CLVMD_CMD_SYNC_NAMES to issue fs_unlock.
 475   Accept fusion fio in device type filter.
 476   Add ability to convert mirror log type from disk to mirrored.
 477
 478 Version 2.02.80 - 10th January 2011
 479 ===================================
 480   Use same dm cookie for consecutive dm ops in same VG to reduce udev waits.
 481   Speed up command processing by caching resolved config tree.
 482   Pass config_tree to renamed function import_vg_from_config_tree().
 483   Detect NULL handle in get_property().
 484   Fix superfluous /usr in ocf_scriptdir instalation path.
 485   Add --with-ocfdir configurable option.
 486   Add aclocal.m4 (for pkgconfig).
 487   Fix memory leak in persistent filter creation error path.
 488   Check for errors setting up dm_task struct in _setup_task().
 489   Fail polldaemon creation when lvmcache_init() fails.
 490   Return PERCENT_INVALID for errors in _copy_percent() and _snap_percent().
 491   Remove some unused variables.
 492   Improve general lvconvert man page description.
 493   Return 0 from cmirrord initscript 'start' if daemon is already running.
 494   Fix wrongly paired unlocking of VG_GLOBAL in pvchange. (2.02.66)
 495   Add backtraces for backup and backup_remove fail paths.
 496   Detect errors from dm_task_set calls in _get_device_info (dmeventd).
 497   Add backtraces for archive and backup_locally in check_current_backup().
 498   Fix memory leak in debug mode of restart_clvmd() error path.
 499   Log error message for pthread_join() failure in clvmd.
 500
 501 Version 2.02.79 - 20th December 2010
 502 ====================================
 503   Remove some unused variables.
 504   Add missing test for reallocation error in _find_parallel_space().
 505   Add checks for allocation errors in config node cloning.
 506   Fix error path if regex engine cannot be created in _build_matcher().
 507   Use char* arithmetic in target_version(), _process_all() & _targets().
 508   Fixing const cast gcc warnings in the code.
 509   Check read() and close() results in _get_cmdline().
 510   Add const for struct config_node usage.
 511   Fix NULL pointer check in error path in clvmd do_command(). (2.02.78)
 512   Fix device.c #include to ensure 64-bit fopen64 use. (2.02.51)
 513   Add copy_percent and snap_percent to liblvm.
 514   Enhance vg_validate to ensure integrity of LV and PV structs referenced.
 515   Enhance vg_validate to check composition of pvmove LVs.
 516   Create /var/run/lvm directory during clvmd initialisation if missing.
 517   Use new dm_prepare_selinux_context instead of dm_set_selinux_context.
 518   Avoid revalidating the label cache immediately after scanning.
 519   Support scanning for a single VG in independent mdas.
 520   Don't skip full scan when independent mdas are present even if memlock is set.
 521   Set cmd->independent_metadata_areas if metadata/dirs or disk_areas in use.
 522   Cope better with an undefined target_percent operation in _percent_run.
 523   Avoid writing to freed memory in vg_release and rename to free_vg.  (2.02.78)
 524
 525 Version 2.02.78 - 6th December 2010
 526 ===================================
 527   Abort if segment tag allocation fails in pool format _add_stripe_seg.
 528   Abort in _mirrored_transient_status if referenced log/image LV is not active.
 529   Add backtraces for dev_set() and dev_close_immediate() errors in set_lv().
 530   Log any unlink() error in clvmd remove_lockfile().
 531   Log any pipe write() or close() errors in clvmd child_init_signal().
 532   Detect if orphan vginfo was lost from cache before _lvmcache_update_vgname().
 533   Do a full rescan if some device is missing in lvm1 format read_pvs_in_vg.
 534   Add missing check that dm_pool_create succeeded in write_config_node().
 535   Use dm_snprintf in clvmd-command.c to ensure an overlong buffer is truncated.
 536   Don't write to buffer if its reallocation failed in clvmd do_command().
 537   Switch from float to fixed point percentage handling.
 538   Avoid misleading missing PV warnings in vgextend --restoremissing.
 539   Fix memory leak when VG allocation policy in metadata is invalid.
 540   Ignore unrecognised allocation policy found in metadata instead of aborting.
 541   Factor out tag printing into _out_tags and avoid leaking string buffer.
 542   Remove some unused variables & assignments.
 543   Add missing vg_release calls in _vg_read_by_vgid.
 544   Fix debug logging of derived flag LCK_CACHE in clvmd.
 545   Fix test for no system_dir in _init_backup().
 546   Disallow lvconvert ops that both allocate & free supplied PEs in a single cmd.
 547   Fix liblvm seg_size to give bytes not sectors.
 548   Add functions to look up LV/PV by name/uuid to liblvm.
 549   Free cmd_context if fallback to LVM1 fails in lvm2_main().
 550   Free device name buffer in dmsetup parse_loop_device_name() error paths.
 551   Close format lib if init_format_fn fails in _init_formats().
 552   Don't leave /proc/mounts open after dmeventd snapshot event processing.
 553   Fix out-of-scope arg_vgnames use in process_each_lv().
 554   Remove incorrect dm_task_destroy(NULL) from _node_clear_table() error path.
 555   Add missing closedir in _rm_blks after removing stray LVM1 VG files.
 556   Suppress 'No PV label' message when removing several PVs without mdas.
 557   Fix default /etc/lvm permissions to be 0755. (2.02.66)
 558
 559 Version 2.02.77 - 22nd November 2010
 560 ====================================
 561   Allocate a pool for dummy VG in _pvsegs_sub_single.
 562   Add PV and LV segment types and functions to liblvm.
 563   Add set_property functions to liblvm.
 564   Remove tag length restriction and allow / = ! : # & characters.
 565   Support repetition of --addtag and --deltag arguments.
 566   Add infrastructure for specific cmdline arguments to be repeated in groups.
 567   Split the_args cmdline arguments and values into arg_props and arg_values.
 568   Fix fsadm no longer to require '-f' to resize an unmounted filesystem.
 569   Fix fsadm to detect mounted filesystems on older systems. (2.0.75)
 570   Extend cling allocation policy to recognise PV tags (cling_by_tags).
 571   Add allocation/cling_tag_list to lvm.conf.
 572   Regenerate configure with 'autoreconf' for --enable-ocf. (2.02.76)
 573
 574 Version 2.02.76 - 8th November 2010
 575 ===================================
 576   Clarify error messages when activation fails due to activation filter use.
 577   Add pacemaker script VolumeGroup.ocf with configure --enable-ocf.
 578   Import make.tmpl into include/ Makefile.
 579   Fix handling of online filesystem resize (using new fsadm return code).
 580   Add DIAGNOSTICS section to fsadm man page.
 581   Modify fsadm to return different status code for check of mounted filesystem.
 582   Update VG metadata only once in vgchange when making multiple changes.
 583   Allow independent vgchange arguments to be used together.
 584   Automatically unmount invalidated snapshots in dmeventd.
 585   Suppress some superfluous messages from clang static analysis.
 586   Fix a deadlock caused by double close in clvmd.
 587   Fix NULL pointer dereference on too-large MDA error path in _vg_read_raw_area.
 588   Use static for internal _align_chunk() and _new_chunk() from pool-fast.c.
 589   Fix vgchange to process -a, --refresh, --monitor and --poll like lvchange.
 590   Add lvm2app functions to query any pv, vg, or lv property / report field.
 591
 592 Version 2.02.75 - 25th October 2010
 593 ===================================
 594   Annotate more variables and parameters as const.
 595   Fix missing variable initialization in cluster_send() function from cmirrord.
 596   Fix pointer for VG name in _pv_resize_single error code path.
 597   Fix warning for changed alignment requirements for dmeventd read/write func.
 598   Add global/metadata_read_only to use unrepaired metadata in read-only cmds.
 599   Don't take write lock in vgchange --refresh, --poll or --monitor.
 600   Skip dm devices in scan if they contain only error targets or are empty.
 601   Fix strict-aliasing compile warning in partition table scanning.
 602   Fix pthread mutex usage deadlock in clvmd.
 603   Automatically extend snapshots with dmeventd according to policy in lvm.conf.
 604   Add activation/snapshot_autoextend_threshold/percent to lvm.conf.
 605   Fix liblvm2cmd link order to support --as-needed.
 606   Remove dependency on libm by replacing floor() by an integer-based algorithm.
 607   Fix hang when repairing a mirrored-log that had both devs fail.
 608   Convey need for snapshot-merge target in lvconvert error message and man page.
 609   Add devices/disable_after_error_count config to limit access to failing devs.
 610   Give correct error message when creating a too-small snapshot.
 611   Implement vgextend --restoremissing to reinstate missing devs that return.
 612   Make lvconvert respect --yes and --force when converting an inactive log.
 613   Refactor and add 'get' functions for lv properties/fields.
 614   Update script for fsadm testing.
 615   Better support of noninteractive shell execution of fsadm.
 616   Fix usage of --yes flag for ReiserFS resize in fsadm.
 617   Fix detection of mounted filesystems for fsadm when udev is used.
 618   Fix assignment of default value to LVM variable in fsadm.
 619   Fix support for --yes flag for fsadm.
 620   Do not execute lvresize from fsadm --dry-run.
 621   Fix fsadm return error code from user's break action.
 622   Allow CC to be overridden at build time (for 'scan-build make').
 623   Rename 'flags' to 'status' in struct metadata_area.
 624   Avoid segfault by limiting partial mode for lvm1 metadata. (2.02.74)
 625   Use dm_zalloc and dm_pool_zalloc throughout.
 626   Add pv_get_property and create generic internal _get_property function.
 627   Add 'get' functions for pv and vg properties/fields.
 628   Make generic GET_*_PROPERTY_FN macros with secondary macro for vg, pv & lv.
 629   Add tags_format_and_copy() common function and call from _tags_disp.
 630   Add id_format_and_copy() common function and call from _uuid_disp.
 631   Refactor report.c '*_disp' functions to call supporting functions.
 632   Move parts of metadata*.[ch] into new {pv|vg|lv}.[ch] files.
 633   Fix vg_read memory leak with directory-based metadata.
 634   Fix memory leak of config_tree in reinitialization code path.
 635   Fix pool destruction order in dmeventd_lvm2_exit() to avoid leak debug mesg.
 636   Read whole /proc/self/maps file before working with maps entries.
 637   Speed up unquoting of quoted double quotes and backslashes.
 638   Speed up CRC32 calculations by using a larger lookup table.
 639
 640 Version 2.02.74 - 24th September 2010
 641 =====================================
 642   Allow : and @ to be escaped with \ in device names of PVs.
 643   Replace alloca with dm_malloc in _aligned_io to avoid stack corruption.
 644   Fix partial mode operations for lvm1 metadata format.
 645   Track recursive filter iteration to avoid refreshing while in use. (2.02.56)
 646   Revert to old glibc vsnprintf behaviour in emit_to_buffer() to catch overflow.
 647   Allocate buffer for metadata tags dynamically to remove 4k limit.
 648   Add random suffix to archive file names to prevent races when being created.
 649   Reinitialize archive and backup handling on toolcontext refresh.
 650   Make poll_mirror_progress report PROGRESS_CHECK_FAILED if LV is not a mirror.
 651   Like mirrors, don't scan origins if ignore_suspended_devices() is set.
 652   Fix return type qualifier to avoid compiler warning. (2.02.69)
 653   Automatically generate LSB Requires-Start for clvmd init script.
 654   Fix return code of pvmove --abort PV.
 655   Fix pvmove --abort to remove even for empty pvmove LV.
 656   Add configure --with-default-data-alignment.
 657   Update heuristic used for default and detected data alignment.
 658   Add "devices/default_data_alignment" to lvm.conf.
 659   Add implementation for simple numeric 'get' property functions.
 660   Define GET_NUM_PROPERTY_FN macro to simplify numeric property 'get' function
 661   Add properties.[ch] to lib/report using columns.h.
 662   Add macro definitions to report infrastructure for character array length.
 663   Remove explicit double quotes from columns.h 'id' entries.
 664   Add 'flags' field to columns.h and define FIELD_MODIFIABLE.
 665   Add vg_mda_size and vg_mda_free functions.
 666   Simplify MD/swap signature detection in pvcreate and allow aborting.
 667   Allow --yes to be used without --force mode.
 668   Fix file descriptor leak in swap signature detection error path.
 669   Detect and allow abort in pvcreate if LUKS signature is detected.
 670   Always mask lock flags correctly when checking for LCK_WRITE.
 671
 672 Version 2.02.73 - 18th August 2010
 673 ==================================
 674   Fix potential for corruption during cluster mirror device failure.
 675   Use 'SINGLENODE' instead of 'dead' in clvmd singlenode messages.
 676   Ignore snapshots when performing mirror recovery beneath an origin.
 677   Pass LCK_ORIGIN_ONLY flag around cluster.
 678   Add suspend_lv_origin and resume_lv_origin using LCK_ORIGIN_ONLY.
 679   Allow internal suspend and resume of origin without its snapshots.
 680   Fix dev_manager_transient to access -real device not snapshot-origin.
 681   Monitor origin -real device below snapshot instead of overlay device.
 682   Don't really change monitoring status when in test mode.
 683   Fix some exit statuses when starting/stopping monitoring fails.
 684   Enable snapshot monitoring by default when dmeventd is enabled.
 685   Move cloned libdevmapper-event client code from segments into lib/activate.
 686   Fix 'lvconvert --splitmirrors' in cluster operation.
 687   Fix clvmd init script exit code to return 4 when executed as non-root user.
 688   Change default alignment of pe_start to 1MB.
 689   Add --norestorefile option to pvcreate.
 690   Require --restorefile when using pvcreate --uuid.
 691   Recognise and give preference to md device partitions (blkext major).
 692   Never scan internal LVM devices.
 693   Don't ignore user-specified PVs in split-mirror operations. (2.02.71)
 694   Fix data corruption bug in cluster mirrors.
 695   Require logical volume(s) to be explicitly named for lvconvert --merge.
 696   Avoid changing aligned pe_start as a side-effect of very verbose logging.
 697   Use built-in rule for device aliases: block/ < dm- < disk/ < mapper/ < other.
 698   Fix const warning in dev_manager_info() and _dev_manager_lv_rmnodes().
 699   Fix const warning in archive_file structure from archive.c.
 700   Clean generated files .exported_symbols_generated, example.conf for distclean.
 701   Handle failure of all mirrored log devices and all but one mirror leg.
 702   Disallow 'mirrored' log type for cluster mirrors.
 703   Do not use VPATH in include/Makefile.
 704   Fix exported_symbols generation to use standard compiler arguments.
 705   Use #include <> not "" in lvm2app.h which gets installed on the system.
 706   Make lib and liblvm.device-mapper wait for include file generation.
 707   Fix configure to supply DEFAULT_RUN_DIR to Makefiles.
 708   Fix allocation of wrong number of mirror logs with 'remove' fault policy.
 709
 710 Version 2.02.72 - 28th July 2010  [CVE-2010-2526]
 711 =================================================
 712   Change clvmd to communicate with lvm2 via a socket in /var/run/lvm.
 713   Return controlled error if clvmd is run by non-root user.
 714   Add configure --default-run-dir for /var/run/lvm.
 715   Never use clvmd singlenode unless explicitly requested with -Isinglenode.
 716
 717 Version 2.02.71 - 28th July 2010
 718 ================================
 719   Document LVM fault handling in doc/lvm_fault_handling.txt.
 720   Make vgck warn about missing PVs.
 721   Clarify help text for vg_mda_count.
 722   Check if cluster log daemon is running before allowing cmirror create.
 723   Add unit-tests dir.
 724   Add configure --enable-testing and reports and report-generators dirs.
 725   Correct LV list order used by lvconvert when splitting a mirror.
 726   Check if LV with specified name already exists when splitting a mirror.
 727   Fix suspend/resume logic for LVs resulting from splitting a mirror.
 728   Update pvcreate, {pv|vg}change, and lvm.conf man pages about metadataignore.
 729   Switch cmirrord and clvmd to use dm_create_lockfile.
 730   Allow clvmd pidfile to be configurable.
 731   Update comments about memory handling in lvm2app.h.
 732   Add more verbose messages while checking volume_list and hosttags settings.
 733   Add log_error when strdup fails in {vg|lv}_change_tag().
 734   Remove unnecessary includes in liblvm files.
 735   Use __attribute__ consistently throughout.
 736   Fix redundant declarations and always compile with -Wredundant-decls.
 737   Fix possible hang when all mirror images of a mirrored log fail.
 738   Pass metadataignore to pv_create, pv_setup, _mda_setup, and add_mda.
 739   Init mda->list in mda_copy.
 740   Do not log backtrace in valid _lv_resume() code path.
 741   Cleanup help strings in configure.in.
 742   Prompt if metadataignore with vgextend or pvchange would adjust vg_mda_copies.
 743   Adjust vg_mda_copies if metadataignore given with vgextend or pvchange.
 744   Adjust auto-metadata repair and caching logic to try to cope with empty mdas.
 745
 746 Version 2.02.70 - 6th July 2010
 747 ===============================
 748   Remove log directly if all mirror images of a mirrored log fail.
 749   Randomly select which mdas to use or ignore.
 750   Add some missing standard configure.in checks.
 751   Add printf format attributes to yes_no_prompt and fix a caller.
 752   Always pass unsuspended dm devices through persistent filter to other filters.
 753   Move test for suspended dm devices ahead of other filters.
 754   Fix another segfault in clvmd -R if no response from daemon. (2.02.68)
 755   Remove superfluous suspended device counter from clvmd.
 756   Fix lvm shell crash when input is entirely whitespace.
 757   Update partial mode warning message.
 758   Preserve memlock balance in clvmd when activation triggers a resume.
 759   Restore the removemissing behaviour of lvconvert --repair --use-policies.
 760
 761 Version 2.02.69 - 30th June 2010
 762 ================================
 763   Fix vgremove to allow removal of VG with missing PVs. (2.02.52)
 764   Add metadata/vgmetadatacopies to lvm.conf.
 765   Add --metadataignore to pvcreate and vgextend.
 766   Add vg_mda_copies, pv_mda_used_count and vg_mda_used_count to reports.
 767   Describe --vgmetadatacopies in lvm.conf and other man pages.
 768   Add --[vg]metadatacopies to select number of mdas to use in a VG.
 769   Make the metadata ignore bit control read/write metadata areas in a PV.
 770   Add pvchange --metadataignore to set or clear a metadata ignore bit.
 771   Refactor metadata code to prepare for --metadataignore / --vgmetadatacopies.
 772   Ensure region_size of mirrored log does not exceed its full size.
 773   Generate liblvm2app exported symbols from header file.
 774   Preload libc locale messages to prevent reading it in memory locked state.
 775   Fix handling of simultaneous mirror image and mirrored log image failure.
 776
 777 Version 2.02.68 - 23rd June 2010
 778 ================================
 779   Fix clvmd initscript status to print only active clustered LVs.
 780   Add lv_path to reports to offer full /dev pathname.
 781   Fix typo in warning message about missing device with allocated data areas.
 782   Add device name and offset to raw_read_mda_header error messages.
 783   Honour log argument when down-converting stacked mirror.
 784   Sleep to workaround clvmd -S race: socket closed early and server drops cmd.
 785   Use early udev synchronisation and update of dev nodes for clustered mirrors.
 786   Remove incorrect inclusion of kdev_t.h from cmirrord/functions.h.
 787   Add man pages for lvmconf and non-existent lvmsadc and lvmsar tools.
 788   Exit successfully when using -o help (but not -o +help) with LVM reports.
 789   Do not use internal DLM lock definitions in generic LVM2 clvmd code.
 790   Add --force, --nofsck and --resizefs to lvresize/extend/reduce man pages.
 791   Fix lvm2cmd example in documentation.
 792   Allow use of lvm2app and lvm2cmd headers in C++ code.
 793   Remove unused #includes from clvmd files and introduce clvmd-common.h.
 794   Move common inclusions to clvmd-common.h.
 795   Use #include "" for libdevmapper.h and configure.h throughout tree.
 796   Fix LVM_PATH expansion when exec_prefix=NONE. (2.02.67)
 797   Fix segfault in clvmd -R if no response from daemon received.
 798
 799 Version 2.02.67 - 4th June 2010
 800 ===============================
 801   Handle failed restart of clvmd using -S switch properly.
 802   Fix clvmd initscript restart command to start clvmd if not yet running.
 803   Use built-in absolute paths in clvmd (clvmd restart and PV and LV queries).
 804   Require partial option in lvchange --refresh for partial LVs.
 805   Do not fail lvm_init() if init_logging() or _init_rand() generates an errno.
 806   Don't merge unchanged persistent cache file before dumping if tool scanned.
 807   Fix incorrect memory pool deallocation while using vg_read for files.
 808   Add --type parameter description to the lvcreate man page.
 809   Replace strncmp kernel version number checks with proper ones.
 810   Avoid selecting names under /dev/block if there is an alternative.
 811   Update clustered log kernel module name to log-userspace for 2.6.31 onwards.
 812   Add replicators' LVs to dtree for activation.
 813   Supress activation message if there is a missing replicator VG.
 814   Fix scripts/relpath.awk to work in mawk
 815   Extend lock_vol to check for missing replicator VGs first.
 816   Update _process_one_vg and process_each_lv_in_vg to populate cmd_vg.
 817   Add cmd_vg structure and associated functions for replicator.
 818   Extend _lv_each_dependency() to handle replicator dependencies.
 819   Add check_replicator_segment() to catch internal replicator errors.
 820   Initial support for replicator metadata.
 821   Extend process_each_lv_in_vg() to provide list of failed lvnames.
 822   Consistently return ECMD_FAILED if process_each_*lv() is interrupted.
 823
 824 Version 2.02.66 - 20th May 2010
 825 ===============================
 826   If unable to obtain snapshot percentage leave value blank on reports.
 827   Add install_system_dirs and install_initscripts makefile targets.
 828   Add configure options for system and locking directories.
 829   Generate example.conf so default lvm.conf contents can be configured.
 830   Install lvmconf script by default.
 831   Remove unnecessary versioned dmeventd plugin symlinks.
 832   Add tests for lvm_vgname_from_{pvid|device}.
 833   Add lvm2app interfaces to lookup a vgname from a pvid and pvname.
 834   Update pvchange to always obtain a vg handle for each pv to process.
 835   Add find_vgname_from_{pvname|pvid} functions.
 836   Add pvid_from_devname and lvmcache_vgname_from_pvid lvmcache functions.
 837   Validate orphan and VG_GLOBAL lock order too.
 838   Accept orphan VG names as parameters to lock_vol() and related functions.
 839   Use is_orphan_vg in place of hard-coded prefix tests and add is_global_vg.
 840
 841 Version 2.02.65 - 17th May 2010
 842 ===============================
 843   Fix clvmd init script never to deactivate non-clustered volume groups.
 844   Disallow vgchange --clustered if there are active mirrors or snapshots.
 845   Introduce lv_is_mirrored.
 846   Use /bin/bash for scripts with bashisms.
 847   Skip internal lvm devices in scan if ignore_suspended_devices is set.
 848   Do not merge old device cache after we run full scan. (2.02.56)
 849   Add pkgconfigdir Makefile variable for make install override.
 850   Configure pkgconfig udev and selinux dependencies.
 851   Switch Libs.private to Requires.private in devmapper.pc and lvm2app.pc.
 852   Use pkgconfig Requires.private for devmapper-event.pc.
 853   Add libdevmapper to linked libdevmapper-event.so.
 854   Link liblvm2cmd.so with libdevmapper-event and libdevmapper.
 855   Fix truncated total size displayed by pvscan.
 856   Add new --sysinit compound option to vgchange and lvchange.
 857   Drop duplicate errors for read failures and missing devices to verbose level.
 858   Use $(libdir)/lvm2 with make install_lvm2_plugin.
 859   Use $(libdir)/device-mapper with make install_dm_plugin.
 860   Add dm_list_splice() function to join two lists together.
 861
 862 Version 2.02.64 - 30th April 2010
 863 =================================
 864   Avoid pointless initialisation when the 'version' command is run directly.
 865   Fix memory leak for invalid regex pattern input.
 866   Display invalid regex pattern for filter configuration in case of error.
 867   Remove no-longer-used arg_ptr_value.
 868   Fix -M and --type to use strings, not pointers that change on config refresh.
 869   Fix lvconvert error message when existing mirrored LV is not found.
 870   Set appropriate udev flags for reserved LVs.
 871   Disallow the direct removal of a merging snapshot.
 872   Don't preload the origin when removing a snapshot whose merge is pending.
 873   Disallow the addition of mirror images while a conversion is happening.
 874   Disallow primary mirror image removal when mirror is not in-sync.
 875   Remove obsolete --name parameter from vgcfgrestore.
 876   Add -S command to clvmd to restart the daemon preserving exclusive locks.
 877   Increment lvm2app version from 1 to 2 (memory allocation changes).
 878   Change lvm2app memory alloc/free for pv/vg/lv properties.
 879   Change daemon lock filename from lvm2_monitor to lvm2-monitor for consistency.
 880   Install symbolic .so links with relative paths between usrlibdir and libdir.
 881   Add awk script relpath.awk to calculate paths for relative symlinks.
 882   Use @AWK@ in makefiles.
 883   Fix double DESTDIR usage for infodir and mandir.
 884
 885 Version 2.02.63 - 14th April 2010
 886 =================================
 887   Rename lvm_dump.sh to lvmdump.sh.
 888   Allow incomplete mirror restore in lvconvert --repair upon insufficient space.
 889   Do not reset position in metadata ring buffer on vgrename and vgcfgrestore.
 890   Allow VGs with active LVs to be renamed.
 891   Use UUIDs instead of names while processing event handlers.
 892   Only pass visible LVs to tools in cmdline VG name/tag expansions without -a.
 893   Use typedefs for toollib process_each functions.
 894   Use C locales and use_mlockall for clvmd.
 895   Refactor code related to vg->pvs list and add pv->vg link.
 896   Mask LCK_HOLD flag in cluster VG locks for backwards compatibility.
 897   Add activation/polling_interval to lvm.conf as --interval default.
 898   Don't ignore error if resuming any LV fails in resume_lvs.
 899   Skip closing persistent filter cache file if open failed.
 900   Install .a and .so links into $(usrlibdir).
 901   Add --enable-write_install options to install user-writable files.
 902   Use INSTALL_PROGRAM/DATA/WDATA target.
 903   Switch from using VPATH  to vpath in Makefiles.
 904   Permit mimage LVs to be striped in lvcreate, lvresize and lvconvert.
 905   Fix pvmove allocation to take existing parallel stripes into account.
 906   Add pvmove_source_seg to struct lv_segment.
 907   Fix incorrect removal of symlinks after LV deactivation fails.
 908   Fix is_partitioned_dev not to attempt to reopen device.
 909   Fix another thread race in clvmd.
 910   Refactor management of vg->pvs list.
 911   Fix lcov rules and generate better coverage report.
 912   Improve vg_validate to detect some loops in lists.
 913   Change most remaining log_error WARNING messages to log_warn.
 914   Always use blocking lock for VGs and orphan locks.
 915   Allocate all memory for segments from private VG mempool.
 916   Return newly allocated PV segment after segment split.
 917   Optimise searching PV segments for seeking the most recently-added.
 918   Remove vg_validate call when parsing cached metadata.
 919   Use hash table of LVs to speed up parsing of text metadata with many LVs.
 920   Fix two vg_validate messages, adding whitespace and parentheses.
 921   When dmeventd is not forking because of -d flag, don't kill parent process.
 922   Fix 'make install' when $(builddir) is different from $(srcdir).
 923   Fix dso resource leak in error path of dmeventd.
 924   Use C locales and use_mlockall for dmeventd.
 925   Fix --alloc contiguous policy only to allocate one set of parallel areas.
 926   Do not allow {vg|lv}change --ignoremonitoring if on clustered VG.
 927   Improved dependency tracking for dmeventd and liblvm2cmd sources.
 928   Improved Makefile rules for distclean and cflow targets.
 929   Add ability to create mirrored logs for mirror LVs.
 930   Fix clvmd cluster propagation of dmeventd monitoring mode.
 931   Allow ALLOC_ANYWHERE to split contiguous areas.
 932   Use INTERNAL_ERROR for internal errors throughout tree.
 933   Add some assertions to allocation code.
 934   Introduce pv_area_used into allocation algorithm and add debug messages.
 935   Add activation/monitoring to lvm.conf.
 936   Add --monitor and --ignoremonitoring to lvcreate.
 937   Allow dynamic extension of array of areas selected as allocation candidates.
 938   Export and use only valid cookie value in test suite.
 939   Remove const modifier for struct volume_group* from process_each_lv_in_vg().
 940   Don't allow resizing of internal logical volumes.
 941   Fix libdevmapper-event pkgconfig version string to match libdevmapper.
 942   Avoid scanning all pvs in the system if operating on a device with mdas.
 943   Add configure --with-clvmd=singlenode to use clvmd w/o cluster infrastructure.
 944   Get stacktrace if testsuite test drops core and lvm was built with debugging.
 945   Disable long living process flag in lvm2app.
 946   Fix pvcreate device md filter check.
 947   Suppress repeated errors about the same missing PV uuids.
 948   Bypass full device scans when using internally-cached VG metadata.
 949   Only do one full device scan during each read of text format metadata.
 950   Remove unnecessary full_scan parameter from get_vgids and get_vgnames calls.
 951   Look up missing PVs by uuid not dev_name in _pvs_single to avoid invalid stat.
 952   Make find_pv_in_vg_by_uuid() return same type as related functions.
 953   Introduce is_missing_pv().
 954   Fix clvmd Makefile to not overwrite LIBS from template definition.
 955
 956 Version 2.02.62 - 9th March 2010
 957 ================================
 958   Add use_mlockall and mlock_filter to activation section of lvm.conf.
 959   Add default alternative to mlockall using mlock to reduce pinned memory size.
 960   Remove -rdynamic from static builds.
 961   Update checks for pthread, readline & selinux libs and link only when needed.
 962   Introduce makefile vars UDEV_LIBS, DL_LIBS, SELINUX_LIBS, STATIC_LIBS.
 963   Introduce makefile vars LVMINTERNAL_LIBS, READLINE_LIBS, PTHREAD_LIBS.
 964   Toggle configure help to print --disable-fsadm.
 965   Use $() instead of ${} consistently for all Makefile variables.
 966   Replace CFLOW_CMD only in make.tmpl and use it as variable elsewhere.
 967   Use $(top_builddir) for inclusion of make.tmpl in Makefiles.
 968   Fix autoconf warning about ignored datarootdir.
 969   Increase AC_PREREQ version to 2.61 (for AC_PROC_SED, AC_PROG_MKDIR_P).
 970   Handle misaligned devices that report alignment_offset of -1.
 971   Extend core allocation code in preparation for mirrored log areas.
 972   Rewrite clvmd init script.
 973   Remove lvs_in_vg_activated_by_uuid_only call.
 974   No longer fall back to looking up active devices by name if uuid not found.
 975   Don't touch /dev in vgmknodes if activation is disabled.
 976   Update lvm2app.h Doxygen comments and add lvm2app Doxygen config file.
 977   Update nightly tests and lvm2app unit tests to cover tags.
 978   Add lvm2app functions lvm_{vg|lv}_{get|add|remove}_tag() functions.
 979   Add dm_pool_strdup to allocate and copy memory in tag library function.
 980   Refactor vgcreate, vgchange, and lvchange for tag library function.
 981   Refactor snapshot-merge deptree and device removal to support info-by-uuid.
 982
 983 Version 2.02.61 - 15th February 2010
 984 ====================================
 985   Fix some consts and floating point gcc warnings.
 986   Fix dm_report_field_uint64 function to accept 64-bit ints.
 987   Change readhead display to use 32-bit -1 const instead of 64-bit.
 988   Add LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES environment variable.
 989   Remove hard-coding that skipped _mimage devices from 11-dm-lvm.rules.
 990   Use udev transactions in test suite.
 991   Set udev state automatically instead of using LVM_UDEV_DISABLE_CHECKING.
 992   Add lvm_pv_get_size, lvm_pv_get_free and lvm_pv_get_dev_size to lvm2app.
 993   Change lvm2app to return all sizes in bytes as documented (not sectors).
 994   Add 'fail_if_percent_unsupported' arg to _percent and _percent_run.
 995   Remove false "failed to find tree node" error when activating merging origin.
 996   Exit with success when lvconvert --repair --use-policies performs no action.
 997   Accept a list of LVs with 'lvconvert --merge @tag' using process_each_lv.
 998   Avoid unnecessary second resync when adding mimage to core-logged mirror.
 999   Exclude internal VG names and uuids from lists returned through lvm2app.
1000   Add %ORIGIN support to lv{create,extend,reduce,resize} --extents.
1001   Add _mda_copy to clone a struct metadata_area.
1002   Remove pointless versioned symlinks to dmeventd plugin libraries.
1003   Fix dmeventd snapshot plugin build dependency.
1004   Make clvmd -V return status zero.
1005   Remove unnecessary 'dmsetup resume' following 'dmsetup create' in tests.
1006   Fix cmirrord segfault in clog_cpg list processing when converting mirror log.
1007   Deactivate temporary pvmove mirror cluster-wide when activating it fails.
1008   Always query device by uuid and not name in clvmd.
1009   Add missing metadata vg_reverts in pvmove error paths.
1010   Unlock shared lock in clvmd if activation calls fail.
1011   Return success from dev_manager_info with non-existent uuid if ioctl succeeds.
1012
1013 Version 2.02.60 - 23rd January 2010
1014 ===================================
1015   Extend cmirrord man page.
1016   Sleep before first progress check if pvmove/lvconvert interval has prefix '+'.
1017   Default to checking progress before waiting in _wait_for_single_lv.
1018   Fix cmirror initscript (including syntax error).
1019   Eliminate avoidable ioctls for checking open_count in _add_new_lv_to_dtree.
1020   Disable memory debugging if dmeventd is configured. (Not thread-safe.)
1021   Fix first log message prefix in syslog for dmeventd plugins.
1022   Fix exported symbols names for dmeventd lvm2 wrapper plugin.
1023   Make failed locking initialisation messages more descriptive.
1024
1025 Version 2.02.59 - 21st January 2010
1026 ===================================
1027   Add libdevmapper-event-lvm2.so to serialise dmeventd plugin liblvm2cmd use.
1028   Cleanup memory initialization and freeing in pv_read() and pv_create().
1029   Clear pointer and counters after their release in _fin_commands().
1030   Stop dmeventd trying to access already-removed snapshots.
1031   Remove (fallback) /dev mknod from cmirrord.
1032   Add t-topology-support.sh and t-snapshot-merge.sh tests.
1033   Fix clvmd to never scan suspended devices.
1034   Fix dmeventd build outside source tree.
1035   Assorted cmirror code changes to remove various compiler warnings.
1036   Fix detection of completed snapshot merge.
1037   Add Red Hat cmirror initscript (unfinished).
1038   Add cmirrord man page (incomplete).
1039   Make cluster log communication structures architecture independant.
1040   Fix cluster log in-memory bitmap handling.
1041   Improve snapshot merge metadata import validation.
1042   Improve target type compatibility checking in _percent_run().
1043   Add 'target_status_compatible' method to 'struct segtype_handler'.
1044   Change underscore to hyphen in table line for clustered log type.
1045
1046 Version 2.02.58 - 14th January 2010
1047 ===================================
1048   Cleanup some minor gcc warnings.
1049   Add --merge to lvconvert to merge a snapshot into its origin.
1050   Fix clvmd automatic target module loading crash (no reset_locking fn).
1051   Fix allocation code not to stop at the first area of a PV that fits.
1052
1053 Version 2.02.57 - 12th January 2010
1054 ===================================
1055   Ensure exactly one process returns from poll_daemon(), never two.
1056   Reset _vgs_locked in lvmcache_init() in child after forking.
1057   Define {DM, LVM}_UDEV_DISABLE_CHECKING=1 environment variables during tests.
1058   Enable udev_sync and udev_rules in lvm.conf by default while running tests.
1059   If LVM_UDEV_DISABLE_CHECKING in set in environment, disable udev warnings.
1060   Add --splitmirrors to lvconvert to split off part of a mirror.
1061   Change background polldaemon's process name to "(lvm2)".
1062   Allow vgremove to remove a VG with PVs missing after a prompt.
1063   Return success in lvconvert --repair --use-policies on failed allocation.
1064   Keep log type consistent when changing mirror image count.
1065   Always set environment variables for an LVM2 device in 11-dm-lvm.rules.
1066   Add activation/udev_rules config option in lvm.conf.
1067   Add consts to text metadata flag structs.
1068   Add macros outfc, outsize, outhint and function out_text_with_comment.
1069   Reimplement report FIELD macro using offsetof instead of static structs.
1070   Fix fsadm man page typo (fsdam).
1071   Rename mirror_device_fault_policy to mirror_image_fault policy.
1072   Remove empty PV devices if lvconvert --repair is using defined policies.
1073   Use fixed buffer to prevent stack overflow in persistent filter dump.
1074   Use extended status of new kernel snapshot target 1.8.0 to detect when empty.
1075   Insert stack macros in suspend_lv, resume_lv & (de)activate_lv callers.
1076   Add --poll flag to vgchange and lvchange to control background daemon launch.
1077   Propagate metadata commit and revert notifications to other cluster nodes.
1078   Use proper mask for VG lock mode in clvmd.
1079   Allow precommitted metadata to be dropped from lvmcache.
1080   Move processing of VG locks to separate function in clvmd.
1081   Properly decode all flags in clvmd messages including VG locks.
1082   Properly handle precommitted cache flag when only committed metadata present.
1083   Resume renamed volumes in reverse order to preserve memlock pairing.
1084   Drop cached metadata after device was auto-repaired and removed from VG.
1085   Clear MISSING_PV flag if PV reappeared and is empty.
1086   Fix removal of multiple devices from a mirror.
1087   Also clean up PVs flagged as missing in vgreduce --removemissing --force.
1088   Introduce INTERNAL_ERROR macro for error messages and use throughout.
1089   Remove superfluous returns from void functions.
1090   Destroy allocated mempool in _vg_read_orphans() error path.
1091   Fix some pvresize and toollib error paths with missing VG releases/unlocks.
1092   Explicitly call suspend for temporary mirror layer.
1093   Allow use of precommitted metadata when a PV is missing.
1094   Add memlock information to do_lock_lv debug output.
1095   Always bypass calls to remote cluster nodes for non-clustered VGs.
1096   Permit implicit cluster lock conversion in pre/post callbacks on local node.
1097   Permit implicit cluster lock conversion to the lock mode already held.
1098   Fix lock flag masking in clvmd so intended code paths get invoked.
1099   Replace magic masks in cluster locking code by defined masks.
1100   Remove newly-created mirror log from metadata if initial deactivation fails.
1101   Correct activated or deactivated text in vgchange summary message.
1102   Improve pvmove error message when all source LVs are skipped.
1103   Fix memlock imbalance in lv_suspend if already suspended.
1104   Fix pvmove test mode not to poll (and fail).
1105   Fix vgcreate error message if VG already exists.
1106   Fix tools to use log_error when aborted due to user response to prompt.
1107   Fix ignored readahead setting in lvcreate --readahead.
1108   Fix clvmd memory leak in lv_info_by_lvid by calling release_vg.
1109   If aborting due to internal error, always send that message to stderr.
1110   Add global/abort_on_internal_errors to lvm.conf to assist testing.
1111   Fix test Makefiles when builddir and srcdir differ.
1112   Impose limit of 8 mirror images to match the in-kernel kcopyd restriction.
1113   Use locking_type 3 (compiled in) for lvmconf --enable-cluster.
1114   Remove list.c and list.h with no-longer-used dm_list macros and functions.
1115   Log failure type and recognise type 'F' (flush) in dmeventd mirror plugin.
1116   Extend internal PV/VG/LV/segment status variables from 32-bit to 64-bit.
1117
1118 Version 2.02.56 - 24th November 2009
1119 ====================================
1120   Add missing vg_release to pvs and pvdisplay to fix memory leak.
1121   Do not try to unlock VG which is not locked in _process_one_vg.
1122   Move is_long_lived persistent_filter_dump to happen after every full scan.
1123   Refresh device filters before full device rescan in lvmcache.
1124   Return error status if vgchange fails to activate some volume.
1125   Fix suspend/resume lock type test causing unbalanced memory locking.
1126   Revert vg_read_internal change as clvmd was not ready for vg_read. (2.02.55)
1127
1128 Version 2.02.55 - 19th November 2009
1129 ====================================
1130   Fix deadlock when changing mirrors due to unpaired memlock refcount changes.
1131   Use separate memlock counter for dmeventd handlers to permit device scanning.
1132   Directly restrict vgchange to activating visible LVs.
1133   Fix pvmove region_size overflow for very large PVs.
1134   Fix lvcreate and lvresize %PVS argument always to use sensible total size.
1135   Tidy some uses of arg_count and introduce arg_is_set.
1136   Export outnl and indent functions for modules.
1137   Flush stdout after yes/no prompt.
1138   Update vgsplit and vgcreate to use vg_set_clustered.
1139   Add vg_mda_count and vg_set_clustered library functions.
1140   Add more vgcreate and vgsplit nightly tests.
1141   Insert some missing stack macros into activation code.
1142   Recognise DRBD devices and handle them like md devices.
1143
1144 Version 2.02.54 - 26th October 2009
1145 ===================================
1146   Update lvcreate/lvconvert man pages to explain PhysicalVolume parameter.
1147   Document --all option in man pages, cleanup {pv|vg|lv}{s|display} man pages.
1148   Permit snapshots of mirrors.
1149   Cleanup mimagetmp LV if allocation fails for new lvconvert mimage.
1150   Fix clvmd segfault when refresh_toolcontext fails.
1151   Remember to clear 'global lock held during cache refresh' state after use.
1152   Use udev flags support in LVM and apply various fixes to udev rules.
1153   Delay announcing mirror monitoring to syslog until initialisation succeeded.
1154   Handle metadata with unknown segment types more gracefully.
1155   Set default owner and group to null.
1156   Add dmeventd.static to the build.
1157   Disable realtime support code by default.
1158   Make clvmd return 0 on success rather than 1.
1159   Add --pvmetadatacopies for pvcreate, vgcreate, vgextend, vgconvert.
1160   Add implict pvcreate support to vgcreate and vgextend.
1161   Correct example.conf to indicate that lvm2 not lvm1 is the default format.
1162   Remove an unused stray LVM1_SUPPORT ifdef.
1163   Only include selinux libs in libdevmapper.pc when selinux build enabled.
1164   Allow for a build directory separate from the source.
1165   Update distclean target for rename clogd to cmirrord. (2.02.52)
1166   Only do lock conversions in clvmd if we are explicitly asked for one.
1167   Introduce percent_range_t and centralise snapshot full/mirror in-sync checks.
1168   Factor out poll_mirror_progress and introduce progress_t.
1169   Distinguish between powers of 1000 and powers of 1024 in unit suffixes.
1170   Restart lvconverts in vgchange by sharing lv_spawn_background_polling.
1171   Generalise polldaemon code by changing mirror-specific variable names.
1172   Don't attempt to deactivate an LV if any of its snapshots are in use.
1173   Return error if lv_deactivate fails to remove device from kernel.
1174   Provide alternative implementation of obsolete siginterrupt().
1175   Consolidate LV allocation into alloc_lv().
1176   Treat input units of both 's' and 'S' as 512-byte sectors.  (2.02.49)
1177   Use standard output units for 'PE Size' and 'Stripe size' in pv/lvdisplay.
1178   Add configure --enable-units-compat to set si_unit_consistency off by default.
1179   Add global/si_unit_consistency to enable cleaned-up use of units in output.
1180
1181 Version 2.02.53 - 25th September 2009
1182 =====================================
1183   Create any directories in /dev with DM_DEV_DIR_UMASK (022).
1184   Enable dmeventd monitoring section of config file by default.
1185   Update lvm2 monitoring script to lvm2_monitoring_init_red_hat.in.
1186   Fix lvm2app test to run under test/api subdirectory only when configured.
1187   Add vg_is_resizeable() and cleanup reference to VG_RESIZEABLE.
1188
1189 Version 2.02.52 - 15th September 2009
1190 =====================================
1191   Update _process_one_vg to cleanup properly after vg_read_error.
1192   Add lots of missing stack debug messages to tools.
1193   Make readonly locking available as locking type 4.
1194   Fix readonly locking to permit writeable global locks (for vgscan). (2.02.49)
1195   Add DM_UDEV_RULES_VSN environment variable to udev rules.
1196   Update vgsplit, vgmerge, and vgrename to obey new vgname ordering rules.
1197   Make lvm2app pv_t, lv_t, vg_t handle definitions consistent with lvm_t.
1198   Enforce an alphabetical lock ordering on vgname locking.
1199   Prioritise write locks over read locks by default for file locking.
1200   Add local lock files with suffix ':aux' to serialise locking requests.
1201   Fix global locking in PV reporting commands (2.02.49).
1202   Fix pvcreate string termination in duplicate uuid warning message.
1203   Don't loop reading sysfs with pvcreate on a non-blkext partition (2.02.51).
1204   Fix vgcfgrestore error paths when locking fails (2.02.49).
1205   Update Makefile distclean target.
1206   Add libudev configuration check.
1207   Make clvmd check corosync to see what cluster interface it should use.
1208   Add clvmd autodetection check and cleanup related configure messages.
1209   Rewrite clvmd configuration code to cope with all combinations of libs.
1210   Added configure --enable-cmirrord to build the cluster mirror log daemon.
1211   Rename clogd to cmirrord.
1212   Make lvchange --refresh only take a read lock on volume group.
1213   Fix race where non-blocking file locks could be granted in error.
1214   Fix vgextend error path - if ORPHAN lock fails, unlock / release vg (2.02.49).
1215   Fix compile warning in clvmd.
1216   Clarify use of PE ranges in lv{convert|create|extend|resize} man pages.
1217   Remove useless _pv_write wrapper.
1218   Add lvm2app.sh to tests conditional upon configure --enable-applib.
1219   Add lvm_vg_is_clustered, lvm_vg_is_exported, and lvm_vg_is_partial.
1220   Update lvm_vg_remove to require lvm_vg_write to commit remove to disk.
1221   Update test/api/test.c to call lvm_vg_create and lvm_vg_remove.
1222
1223 Version 2.02.51 - 6th August 2009
1224 =================================
1225   Fix locking in clvmd (2.02.50).
1226   Add --noudevsync option for relevant LVM tools.
1227   Add activation/udev_sync to lvm.conf.
1228   Only change LV symlinks on ACTIVATE not PRELOAD.
1229   Make lvconvert honour log mirror options combined with downconversion.
1230   Allow LV suspend while --ignorelockingfailure is in force.
1231   Update synopsis in lvconvert manpage to mention --repair.
1232   Set cookies in activation code and wait for udev to complete processing.
1233   Added configure --enable-udev_rules --enable-udev_sync.
1234   Added configure --with-udev-prefix --with-udevdir.
1235   Added udev dir to hold udev rules.
1236   Add devices/data_alignment_detection to lvm.conf.
1237   Add devices/data_alignment_offset_detection to lvm.conf.
1238   Add --dataalignmentoffset to pvcreate to shift start of aligned data area.
1239   Fix _mda_setup() to not check first mda's size before pe_align rounding.
1240   Document -I option of clvmd in the man page.
1241   Fix configure script to handle multiple clvmd selections.
1242   Fix lvm2app.pc installation filename.
1243   Remove pv_t, vg_t & lv_t handles from lib.  Only liblvm uses them.
1244   Rename lvm.h to lvm2app.h for now.
1245
1246 Version 2.02.50 - 28th July 2009
1247 ================================
1248   Change test/api/test.c prompt so it's not confused with the main lvm prompt.
1249   Update liblvm unit tests in test/api to cover latest liblvm changes.
1250   Add unimplemented lvm_lv_resize and lvm_pv_resize skeletons to liblvm.
1251   Add lvm_library_get_version to liblvm.
1252   Add lvm_config_override to liblvm to allow caller to override LVM config.
1253   Add lvm_lv_is_active and lvm_lv_is_suspended to liblvm.
1254   Add lvm_lv_activate and lvm_lv_deactivate to liblvm.
1255   Add lvm_scan, lvm_vg_reduce and lvm_vg_remove_lv to liblvm.
1256   Add functions to get numeric properties to liblvm.
1257   Add lvm_{pv|vg|lv}_get_{name|uuid} to liblvm.
1258   Add lvm_vg_list_pvs and lvm_vg_list_lvs to liblvm.
1259   Add lvm_vg_open and lvm_vg_create_lv_linear to liblvm.
1260   Add lvm_list_vg_names/uuids to liblvm.
1261   Add lvm_errno and lvm_errmsg to liblvm to obtain failure information.
1262   Rename lvm_create/destroy to lvm_init/quit.
1263   Rename lvm_reload_config to lvm_config_reload.
1264   Refactor _override_settings to use new override_config_tree_from_string.
1265   Add vg_reduce to metadata.c and metadata-exported.h.
1266   Update lvm.h to clarify API behavior and return codes.
1267   Update lvm_vg_extend to do an implicit pvcreate on the device.
1268   Update display.c to use vg_free(vg) instead of duplicating the calculation.
1269   Refactor vg_size, vg_free, and pv_mda_count field calculations for liblvm.
1270   Refactor pvcreate and lvcreate for liblvm.
1271   Add global/wait_for_locks to lvm.conf so blocking for locks can be disabled.
1272   All LV locks are non-blocking so remove LCK_NONBLOCK from separate macros.
1273   Fix race condition with vgcreate and vgextend on same device (2.02.49).
1274   Remove redundant validate_name call from vgreduce.
1275   Remove unused handles lvseg, pvseg inside liblvm/lvm.h.
1276   Add liblvm2app Makefile installation targets.
1277   Add liblvm pkgconfig file.
1278   Use newly-independent LVM_LIBAPI in liblvm soname.  E.g. liblvm2app.so.2.1.
1279   Add an API version number, LVM_LIBAPI, to the VERSION string for liblvm.
1280   Pass a pointer to struct cmd_context to init_multiple_segtypes
1281   Return EINVALID_CMD_LINE not success when invalid VG name format is used.
1282   Remove unnecessary messages after vgcreate/vgsplit refactor (2.02.49).
1283   Add log_errno to set a specific errno and replace log_error in due course.
1284   Change create_toolcontext to still return an object if it fails part-way.
1285   Add EUNCLASSIFIED (-1) as the default LVM errno code.
1286   Store any errno and error messages issued while processing each command.
1287   Use log_error macro consistently throughout in place of log_err.
1288
1289 Version 2.02.49 - 15th July 2009
1290 ================================
1291   Add readonly locking type to replace implementation of --ignorelockingfailure.
1292   Exclude VG_GLOBAL from vg_write_lock_held so scans open devs read-only again.
1293   Add unit test case for liblvm VG create/delete APIs.
1294   Add liblvm APIs to implement creation and deletion of VGs.
1295   Initialize cmd->cmd_line to "liblvm" in new liblvm library.
1296   Place handles to liblvm objects for pv, vg, lv, lvseg, pvseg inside lvm.h.
1297   Refactor vgsplit and vgextend to remove READ_REQUIRE_RESIZEABLE flag.
1298   Use _exit() not exit() after forking to avoid flushing libc buffers twice.
1299   Add cast to log_info arg in _find_labeller to avoid Sparc64 warning.
1300   Make cmd->cmd_line const.
1301   Fix dev name mismatch in vgcreate man page example.
1302   Refactor vg_remove_single for use in liblvm.
1303   Make all tools use consistent lock ordering obtaining VG_ORPHAN lock second.
1304   Check md devices for a partition table during device scan.
1305   Add extended device (blkext) and md partition (mdp) types to filters.
1306   Make text metadata read errors for segment areas more precise.
1307   Fix text segment metadata read errors to mention correct segment name.
1308   Include segment and LV names in text segment import error messages.
1309   Add parent node to config_node structure.
1310   Update vgsplit and vgcreate to call new vg_create and 'set' functions.
1311   Change vg_create to take minimal parameters, obtain a lock, and return vg_t.
1312   Refactor vgchange extent_size, max_lv, max_pv, and alloc_policy for liblvm.
1313   Update t-vgcreate-usage.sh to test for default vg properties.
1314   Fix memory leak in vgsplit when re-reading the vg.
1315   Make various exit/cleanup paths more robust after lvm init failures.
1316   Use LCK_NONBLOCK implicitly instead of explicit vg_read() flag.
1317   Remove unnecessary locking and existence tests from new vg_read() interface.
1318   Permit several segment types to be registered by a single shared object.
1319   Update the man pages to document size units uniformly.
1320   Allow commandline sizes to be specified in terms of bytes and sectors.
1321   Update 'md_chunk_alignment' to use stripe-width to align PV data area.
1322   Update test/t-inconsistent-metadata.sh to match new vg_read interface.
1323   Add lvmcache_init() to polldaemon initialization.
1324   Convert tools to use new vg_read / vg_read_for_update.
1325   Fix segfault in vg_release when vg->cmd is NULL.
1326
1327 Version 2.02.48 - 30th June 2009
1328 ================================
1329   Abort if automatic metadata correction fails when reading VG to update it.
1330   Explicitly request fallback to default major number in device mapper.
1331   Ignore suspended devices during repair.
1332   Call vgreduce --removemissing automatically to fix missing PVs in dmeventd.
1333   Suggest using lvchange --resync when adding leg to not-yet-synced mirror.
1334   Destroy toolcontext on clvmd exit to avoid memory pool leaks.
1335   Fix lvconvert not to poll mirror if no conversion in progress.
1336   Fix memory leaks in toolcontext error path.
1337   Reinstate partial activation support in clustered mode. (2.02.40)
1338   Allow metadata correction even when PVs are missing.
1339   Use 'lvm lvresize' instead of 'lvresize' in fsadm.
1340   Do not use '-n' realine option in fsadm for busybox compatiblity.
1341   Add vg_lock_newname() library function for vgrename, vgsplit and vgcreate.
1342   Round up requested readahead to at least one page and print warning.
1343   Try to repair vg before actual vgremove when force flag provided.
1344   Fix possible double release of VG after recovery.
1345   Add parameter to process_each_vg specifying what to do with inconsistent VG.
1346   Unify error messages when processing inconsistent volume group.
1347   Use lvconvert --repair instead of vgreduce in mirror dmeventd DSO.
1348   Introduce lvconvert --use_policies (repair policy according to lvm.conf).
1349   Update clvmd-corosync to match new corosync API.
1350   Fix lib Makefile to include any shared libraries in default target.
1351   Fix rename of active snapshot with virtual origin.
1352   Fix convert polling to ignore LV with different UUID.
1353   Cache underlying device readahead only before activation calls.
1354   Fix segfault when calculating readahead on missing device in vgreduce.
1355   Remove verbose 'visited' messages.
1356   Handle multi-extent mirror log allocation when smallest PV has only 1 extent.
1357   Add LSB standard headers and functions (incl. reload) to clvmd initscript.
1358   When creating new LV, double-check that name is not already in use.
1359   Remove /dev/vgname/lvname symlink automatically if LV is no longer visible.
1360   Rename internal vorigin LV to match visible LV.
1361   Suppress 'removed' messages displayed when internal LVs are removed.
1362   Fix lvchange -a and -p for sparse LVs.
1363   Fix lvcreate --virtualsize to activate the new device immediately.
1364   Make --snapshot optional with lvcreate --virtualsize.
1365   Generalise --virtualoriginsize to --virtualsize.
1366   Skip virtual origins in process_each_lv_in_vg() without --all.
1367   Fix counting of virtual origin LVs in vg_validate.
1368   Attempt to load dm-zero module if zero target needed but not present.
1369
1370 Version 2.02.47 - 22nd May 2009
1371 ===============================
1372   Rename liblvm.so to liblvm2app.so and use configure --enable-applib.
1373   Reinstate version in liblvm2cmd.so soname. (2.02.44)
1374
1375 Version 2.02.46 - 21st May 2009
1376 ===============================
1377   Inherit readahead setting from underlying devices during activation.
1378   Detect LVs active on remote nodes by querying locks if supported.
1379   Enable online resizing of mirrors.
1380   Use suspend with flush when device size was changed during table preload.
1381   Implement query_resource_fn for cluster_locking.
1382   Support query_resource_fn in locking modules.
1383   Introduce CLVMD_CMD_LOCK_QUERY command for clvmd.
1384   Fix pvmove to revert operation if temporary mirror creation fails.
1385   Fix metadata export for VG with missing PVs.
1386   Add vgimportclone and install it and the man page by default.
1387   Force max_lv restriction only for newly created LV.
1388   Remove unneeded import parameter from lv_create_empty.
1389   Merge lv_is_displayable and lv_is_visible functions.
1390   Introduce lv_set_visible & lv_set_hidden functions.
1391   Fix lv_is_visible to handle virtual origin.
1392   Introduce link_lv_to_vg and unlink_lv_from_vg functions.
1393   Remove lv_count from VG and use counter function instead.
1394   Fix snapshot segment import to not use duplicate segments & replace.
1395   Do not query nonexistent devices for readahead.
1396   Remove NON_BLOCKING lock flag from tools and set a policy to auto-set.
1397   Remove snapshot_count from VG and use function instead.
1398   Fix first_seg() call for empty segment list.
1399   Add install_lvm2 makefile target to install only the LVM2 components.
1400   Reject missing PVs from allocation in toollib.
1401   Fix PV datalignment for values starting prior to MDA area. (2.02.45)
1402   Add sparse devices: lvcreate -s --virtualoriginsize (hidden zero origin).
1403   Fix minimum width of devices column in reports.
1404   Add lvs origin_size field.
1405   Fix linux configure --enable-debug to exclude -O2.
1406   Implement lvconvert --repair for repairing partially-failed mirrors.
1407   Fix vgreduce --removemissing failure exit code.
1408   Fix remote metadata backup for clvmd.
1409   Introduce unlock_and_release_vg macro.
1410   Introduce vg_release() to be called to free every struct volume_group.
1411   Alloc PV internal structure from VG mempool if possible.
1412   Fix metadata backup to run after vg_commit always.
1413   Tidy clvmd volume lock cache functions.
1414   Fix pvs report for orphan PVs when segment attributes are requested.
1415   Fix pvs -a output to not read volume groups from non-PV devices.
1416   Add MMC (mmcblk) device type to filters.
1417   Introduce memory pools per volume group (to reduce memory for large VGs).
1418   Use copy of PV structure when manipulating global PV lists.
1419   Always return exit error status when locking of volume group fails.
1420   Fix mirror log convert validation question.
1421   Avoid referencing files from DESTDIR during build process.
1422   Avoid creating some static libraries unless configured --enable-static_link.
1423   Enable use of cached metadata for pvs and pvdisplay commands.
1424   Add missing 'device-mapper' internal subdir build dependency.
1425   Fix memory leak in mirror allocation code.
1426   Save and restore the previous logging level when log level is changed.
1427   Fix error message when archive initialization fails.
1428   Make sure clvmd-corosync releases the lockspace when it exits.
1429   Fix segfault for vgcfgrestore on VG with missing PVs.
1430   Block SIGTERM & SIGINT in clvmd subthreads.
1431   Detect and conditionally wipe swapspace signatures in pvcreate.
1432   Fix maximal volume count check for snapshots if max_lv set for volume group.
1433   Fix lvcreate to remove unused cow volume if the snapshot creation fails.
1434   Fix error messages when PV uuid or pe_start reading fails.
1435   Build new liblvm application-level library.
1436   Rename liblvm.a to liblvm-internal.a.
1437   Flush memory pool and fix locking in clvmd refresh and backup command.
1438   Fix unlocks in clvmd-corosync. (2.02.45)
1439   Fix error message when adding metadata directory to internal list fails.
1440   Fix size and error message of memory allocation at backup initialization.
1441   Remove old metadata backup file after renaming VG.
1442   Restore log_suppress state when metadata backup file is up-to-date.
1443
1444 Version 2.02.45 - 3rd March 2009
1445 ================================
1446   Avoid scanning empty metadata areas for VG names.
1447   Attempt proper clean up in child before executing new binary in exec_cmd().
1448   Do not scan devices if reporting only attributes from PV label.
1449   Use pkgconfig to obtain corosync library details during configuration.
1450   Fix error returns in clvmd-corosync interface to DLM.
1451   Add --refresh to vgchange and vgmknodes man pages.
1452   Pass --test from lvresize to fsadm as --dry-run.
1453   Supply argv[] list to exec_cmd() to allow for variable number of parameters.
1454   Prevent fsadm from checking mounted filesystems.
1455   No longer treats any other key as 'no' when prompting in fsadm.
1456   Tidy fsadm command line processing.
1457   Add lib/lvm.h and lib/lvm_base.c for the new library interface.
1458   Move tools/version.h to lib/misc/lvm-version.h.
1459   Split LVM_VERSION into MAJOR, MINOR, PATCHLEVEL, RELEASE and RELEASE_DATE.
1460   Add system_dir parameter to create_toolcontext().
1461   Add --dataalignment to pvcreate to specify alignment of data area.
1462   Exclude LCK_CACHE locks from _vg_lock_count, fixing interrupt unblocking.
1463   Provide da and mda locations in debug message when writing text format label.
1464   Mention the restriction on file descriptors at invocation on the lvm man page.
1465   Index cached vgmetadata by vgid not vgname to cope with duplicate vgnames.
1466   No longer require kernel and metadata major numbers to match.
1467   Add a fully-functional get_cluster_name() to clvmd corosync interface.
1468   Remove duplicate cpg_initialize from clvmd startup.
1469   Add option to /etc/sysconfig/cluster to select cluster type for clvmd.
1470   Allow clvmd to start up if its lockspace already exists.
1471   Separate PV label attributes which do not need parse metadata when reporting.
1472   Remove external dependency on the 'cut' command from fsadm.
1473   Fix pvs segfault when pv mda attributes requested for not available PV.
1474   Add fsadm support for reszing ext4 filesysystems.
1475   Move locking_type reading inside init_locking().
1476   Rename get_vgs() to get_vgnames() and clarify related error messages.
1477   Allow clvmd to be built with all cluster managers & select one on cmdline.
1478   Mention --with-clvmd=corosync in ./configure.
1479   Replace internal vg_check_status() implementation.
1480   Rename vg_read() to vg_read_internal().
1481
1482 Version 2.02.44 - 26th January 2009
1483 ===================================
1484   Fix --enable-static_link after the recent repository changes.
1485   Add corosync/DLM cluster interface to clvmd.
1486   Add --nameprefixes, --unquoted, --rows to pvs, vgs, lvs man pages.
1487   Fix lvresize size conversion for fsadm when block size is not 1K.
1488   Fix pvs segfault when run with orphan PV and some VG fields.
1489   Display a 'dev_size' of zero for missing devices in reports.
1490   Add pv_mda_size to pvs and vg_mda_size to vgs.
1491   Fix lvmdump /sys listing to include virtual devices directory.
1492   Add "--refresh" functionality to vgchange and vgmknodes.
1493   Avoid exceeding LV size when wiping device.
1494   Calculate mirror log size instead of using 1 extent.
1495   Ensure requested device number is available before activating with it.
1496   Fix incorrect exit status from 'help <command>'.
1497   Fix vgrename using UUID if there are VGs with identical names.
1498   Fix segfault when invalid field given in reporting commands.
1499   Move is_static from cmd to global is_static().
1500   Refactor init_lvm() for lvmcmdline and clvmd.
1501   Add liblvm interactive test infrastructure to build.
1502   Add skeleton lvm2.h file in preparation for a shared library interface.
1503   Use better random seed value in temp file creation.
1504   Add read_urandom to read /dev/urandom. Use in uuid calculation.
1505   Use displayable_lvs_in_vg and lv_is_displayable for consistency throughout.
1506   Fix race in vgcreate that would result in second caller overwriting first.
1507   Fix uninitialised lv_count in vgdisplay -c.
1508   Don't skip updating pvid hash when lvmcache_info struct got swapped.
1509   Add tinfo to termcap search path for pld-linux.
1510   Fix startup race in clvmd.
1511   Generate Red Hat clvmd startup script at config time with correct paths.
1512   Fix clvmd & dmeventd builds after tree restructuring.
1513   Cope with snapshot dependencies when removing a whole VG with lvremove.
1514   Make man pages and tool help text consistent using | for alternative options.
1515
1516 Version 2.02.43 - 10th November 2008
1517 ====================================
1518   Merge device-mapper into the lvm2 tree.
1519   Correct prototype for --permission on lvchange and lvcreate man pages.
1520   Exit with non-zero status from vgdisplay if couldn't show any requested VG.
1521   Move list.c into libdevmapper and rename functions.
1522   Rename a couple of variables that matched function names.
1523   Use simplified x.y.z version number in libdevmapper.pc.
1524   Remove ancient debian directory.
1525   Split out lvm-logging.h from log.h and lvm-globals.[ch] from log.[ch].
1526
1527 Version 2.02.42 - 26th October 2008
1528 ===================================
1529   Accept locking fallback_to_* options in the global section as documented.
1530   Fix temp table activation in mirror conversions not to happen in other cmds.
1531   Fix temp table in mirror conversions to use always-present error not zero.
1532
1533 Version 2.02.41 - 17th October 2008
1534 ===================================
1535   Use temp table to set device size when converting mirrors.
1536   In resume_mirror_images replace activate_lv with resume_lv as workaround.
1537   Avoid overwriting in-use on-disk text metadata by forgetting MDA_HEADER_SIZE.
1538   Fix snapshot monitoring library to not cancel monitoring invalid snapshot.
1539   Generate man pages from templates and include version.
1540   Add usrlibdir and usrsbindir to configure.
1541   Fix conversion of md chunk size into sectors.
1542   Free text metadata buffer after a failure writing it.
1543   Fix misleading error message when there are no allocatable extents in VG.
1544   Fix handling of PVs which reappeared with old metadata version.
1545   Fix mirror DSO to call vgreduce with proper parameters.
1546   Fix validation of --minor and --major in lvcreate to require -My always.
1547   Fix release: clvmd build, vgreduce consolidate & tests, /dev/ioerror warning.
1548
1549 Version 2.02.40 - 19th September 2008
1550 =====================================
1551   Allow lvremove to remove LVs from VGs with missing PVs.
1552   In VG with PVs missing, by default allow activation of LVs that are complete.
1553   Track PARTIAL_LV and MISSING_PV flags internally.
1554   Require --force with --removemissing in vgreduce to remove partial LVs.
1555   No longer write out PARTIAL flag into metadata backups.
1556   Treat new default activation/missing_stripe_filler "error" as an error target.
1557   Remove internal partial_mode.
1558   Add devices/md_chunk_alignment to lvm.conf.
1559   Pass struct physical_volume to pe_align and adjust for md chunk size.
1560   Store sysfs location in struct cmd_context.
1561   Avoid shuffling remaining mirror images when removing one, retaining primary.
1562   Add missing LV error target activation in _remove_mirror_images.
1563   Prevent resizing an LV while lvconvert is using it.
1564   Avoid repeatedly wiping cache while VG_GLOBAL is held in vgscan & pvscan.
1565   Fix pvresize to not allow resize if PV has two metadata areas.
1566   Fix setting of volume limit count if converting to lvm1 format.
1567   Fix vgconvert logical volume id metadata validation.
1568   Fix lvmdump metadata gather option (-m) to work correctly.
1569   Fix allocation bug in text metadata format write error path.
1570   Fix vgcfgbackup to properly check filename if template is used.
1571   configure aborts if lcov or genhtml are missing with --enable-profiling
1572   vgremove tries to remove lv snapshot first.
1573   Added function lv_remove_with_dependencies().
1574   Improve file descriptor leak detection to display likely culprit and filename.
1575   Change clustered mirror kernel module name from cmirror to dm-log-clustered.
1576   Avoid looping forever in _pv_analyze_mda_raw used by pvck.
1577   Change lvchange exit status to indicate if any part of the operation failed.
1578   Fix pvchange and pvremove to handle PVs without mdas.
1579   Refactor _text_pv_read and always return mda list if requested.
1580   Fix configure to work w/o readline unless --enable-readline used. (2.02.39)
1581   Remove is_lvm_partition template which has not yet been coded.
1582   Refactor pvcreate to separate parameter parsing from validation logic.
1583   Check for label_write() failure in _text_pv_write().
1584   Add pvcreate tests and update vgsplit tests to handle lvm1 and lvm2 metadata.
1585   Fix pvchange -M1 -u to preserve existing extent locations when there's a VG.
1586   Cease recognising snapshot-in-use percentages returned by early devt kernels.
1587   Add backward-compatible flags field to on-disk format_text metadata.
1588   Fix dmeventd monitoring libraries to link against liblvm2cmd again. (2.02.39)
1589
1590 Version 2.02.39 - 27th June 2008
1591 ================================
1592   Enable readline by default if available.
1593   Update autoconf to 2008-01-16.
1594   Add $DISTCLEAN_DIRS to make.tmpl.in.
1595   Create coverage reports with --enable-profiling and make lcov or lcov-dated.
1596   Fix up cache for PVs without mdas after consistent VG metadata is processed.
1597   Update validation of safe mirror log type conversions in lvconvert.
1598   Fix lvconvert to disallow snapshot and mirror combinations.
1599   Fix reporting of LV fields alongside unallocated PV segments.
1600   Add --unquoted and --rows to reporting tools.
1601   Add and use uninitialized_var() macro to suppress invalid compiler warnings.
1602   Introduce enum for md minor sb version to suppress compiler warning.
1603   Avoid undefined return value after _memlock manipulation in lvm2_run.
1604   Avoid link failure if configured without --enable-cmdlib or --enable-readline.
1605   Make clvmd return at once if other nodes down in a gulm or openais cluster.
1606   Fix and improve readahead 'auto' calculation for stripe_size.
1607   Fix lvchange output for -r auto setting if auto is already set.
1608   Add test case for readahead.
1609   Avoid ambiguous use of identifier error_message_produced.
1610   Begin syncing configure.in for merge/unification with device-mapper.
1611   Fix add_mirror_images not to dereference uninitialized log_lv upon failure.
1612   Don't call openlog for every debug line output by clvmd.
1613   Add --force to lvextend and lvresize.
1614   Fix vgchange not to activate component mirror volumes directly.
1615   Fix test directory clean up in make distclean.
1616
1617 Version 2.02.38 - 11th June 2008
1618 ================================
1619   Fix tracking of validity of PVs with no mdas in lvmcache.
1620   Fix return values for reporting commands when run with no PVs, LVs, or VGs.
1621   Add omitted unlock_vg() call when sigint_caught() during vg processing.
1622   Fix free_count when reading pool metadata.
1623   Fix segfault when using pvcreate on a device containing pool metadata.
1624   Fix segfault after _free_vginfo by remembering to remove vginfo from list.
1625   Tweak detection of invalid fid after changes to PVs in VG in _vg_read.
1626   Revert assuming precommitted metadata is live when activating (unnecessary).
1627   Drop cached metadata for disappearing VG in vgmerge.
1628   In script-processing mode, stop if any command fails.
1629   Warn if command exits with non-zero status code without a prior log_error.
1630   Check lv_count in vg_validate.
1631   Add --nameprefixes to reporting tools for field name prefix output format.
1632
1633 Version 2.02.37 - 6th June 2008
1634 ===============================
1635   Make clvmd-cman use a hash rather than an array for node updown info.
1636   Correct config file line numbers in messages when parsing comments.
1637   Drop cached metadata when renaming a VG.
1638   Allow for vginfo changing during _vg_read.
1639   Decode numbers in clvmd debugging output.
1640   Add missing deactivation after activation failure in lvcreate -Zy.
1641   When activating, if precommitted metadata is still cached, assume it's live.
1642   When removing LV symlinks, skip any where the VG name is not determined.
1643   Drop metadata cache if update fails in vg_revert or vg_commit.
1644   Avoid spurious duplicate VG messages referring to VGs that are gone.
1645   Drop dev_name_confirmed error message to debug level.
1646   Fix setpriority error message to signed int.
1647   Temporarily disable dmeventd mirror monitoring during lvchange --resync.
1648   Refactor some vginfo manipulation code.
1649   Add assertions to trap deprecated P_ and V_ lock usage.
1650   Add missing mutex around clvmd lvmcache_drop_metadata library call.
1651   Fix uninitialised mutex in clvmd if all daemons are not running at startup.
1652   Avoid using DLM locks with LCK_CACHE type P_ lock requests.
1653   When asked to drop cached committed VG metadata, invalidate cached PV labels.
1654   Drop metadata cache before writing precommitted metadata instead of after.
1655   Don't touch /dev in vgrename if activation is disabled.
1656
1657 Version 2.02.36 - 29th April 2008
1658 =================================
1659   Fix fsadm.sh to work with older blockdev, blkid & readlink binaries.
1660   Fix lvresize to pass new size to fsadm when extending device.
1661   Remove unused struct in clvmd-openais, and use correct node count.
1662   Fix nodes list in clvmd-openais, and allow for broadcast messages.
1663   Exclude VG_GLOBAL from internal concurrent VG lock counter.
1664   Fix vgsplit internal counting of snapshot LVs.
1665   Fix vgmerge snapshot_count when source VG contains snapshots.
1666   Simplify clvmd-openais by using non-async saLckResourceLock.
1667   Fix internal LV counter when a snapshot is removed.
1668   Fix metadata corruption writing lvm1-formatted metadata with snapshots.
1669   Fix lvconvert -m0 allocatable space check.
1670
1671 Version 2.02.35 - 15th April 2008
1672 =================================
1673   Drop cached VG metadata before and after committing changes to it.
1674   Rename P_global to P_#global.
1675   Don't attempt remote metadata backups of non-clustered VGs. (2.02.29)
1676   Don't store fid in VG metadata cache to avoid clvmd segfault. (2.02.34)
1677   Update vgsplit tests to verify loosening of active LV restriction.
1678   Update vgsplit to only restrict split with active LVs involved in split.
1679   Add lv_is_active() to determine whether an lv is active.
1680
1681 Version 2.02.34 - 10th April 2008
1682 =================================
1683   Improve preferred_names lvm.conf example.
1684   Fix vgdisplay 'Cur LV' field to match lvdisplay output.
1685   Fix lv_count report field to exclude hidden LVs.
1686   Add vg_is_clustered() helper function.
1687   Fix vgsplit to only move hidden 'snapshotN' LVs when necessary.
1688   Update vgsplit tests for lvnames on the cmdline.
1689   Update vgsplit man page to reflect lvnames on the cmdline.
1690   Update vgsplit to take "-n LogicalVolumeName" on the cmdline.
1691   Use clustered mirror log with pvmove in clustered VGs, if available.
1692   Fix some pvmove error status codes.
1693   Fix vgsplit error paths to release vg_to lock.
1694   Indicate whether or not VG is clustered in vgcreate log message.
1695   Mention default --clustered setting in vgcreate man page.
1696   Add config file overrides to clvmd when it reads the active LVs list.
1697   Fix vgreduce to use vg_split_mdas to check sufficient mdas remain.
1698   Add (empty) orphan VGs to lvmcache during initialisation.
1699   Fix orphan VG name used for format_pool.
1700   Create a fid for internal orphan VGs.
1701   Update lvmcache VG lock state for all locking types now.
1702   Fix output if overriding command_names on cmdline.
1703   Add detection of clustered mirror log capability.
1704   Add check to vg_commit() ensuring VG lock held before writing new VG metadata.
1705   Add validation of LV name to pvmove -n.
1706   Make clvmd refresh the context correctly when lvm.conf is updated.
1707   Add some basic internal VG lock validation.
1708   Add per-command flags to control which commands use the VG metadata cache.
1709   Fix vgsplit locking of new VG (2.02.30).
1710   Avoid erroneous vgsplit error message for new VG. (2.02.29)
1711   Suppress duplicate message when lvresize fails because of invalid vgname.
1712   Cache VG metadata internally while VG lock is held.
1713   Fix redundant lvresize message if vg doesn't exist.
1714   Fix another allocation bug with clvmd and large node IDs.
1715   Add find_lv_in_lv_list() and find_pv_in_pv_list().
1716   Fix uninitialised variable in clvmd that could cause odd hangs.
1717   Add vgmerge tests.
1718   Add pvseg_is_allocated() for identifying a PV segment allocated to a LV.
1719   Add list_move() for moving elements from one list to another.
1720   Add 'is_reserved_lvname()' for identifying hidden LVs.
1721   Correct command name in lvmdiskscan man page.
1722   clvmd no longer crashes if it sees nodeids over 50.
1723   Fix potential deadlock in clvmd thread handling.
1724   Refactor text format initialisation into _init_text_import.
1725   Escape double quotes and backslashes in external metadata and config data.
1726   Add functions for escaping double quotes in strings.
1727   Rename count_chars_len to count_chars.
1728   Use return_0 in a couple more places.
1729   Correct a function name typo in _line_append error message.
1730   Include limits.h in clvmd so it compiles with newer headers.
1731   Add VirtIO disks (virtblk) to filters.
1732   Fix resetting of MIRROR_IMAGE and VISIBLE_LV after removal of LV. (2.02.30)
1733   Fix remove_layer_from_lv to empty the LV before removing it. (2.02.30)
1734   Add missing no-longer-used segs_using_this_lv test to check_lv_segments.
1735   Remove redundant non-NULL tests before calling free in clvmd.c.
1736   Avoid a compiler warning: make is_orphan's parameter const.
1737   Fix lvconvert detection of mirror conversion in progress. (2.02.30)
1738   Avoid automatic lvconvert polldaemon invocation when -R specified. (2.02.30)
1739   Fix 'pvs -a' to detect VGs of PVs without metadata areas.
1740   Divide up internal orphan volume group by format type.
1741   Update usage message for clvmd.
1742   Fix clvmd man page not to print <br> and clarified debug options.
1743   Fix lvresize to support /dev/mapper prefix in the LV name.
1744   Fix unfilled parameter passed to fsadm from lvresize.
1745   Update fsadm to call lvresize if the partition size differs (with option -l).
1746   Fix fsadm to support VG/LV names.
1747
1748 Version 2.02.33 - 31st January 2008
1749 ===================================
1750   Fix mirror log name construction during lvconvert. (2.02.30)
1751   Make monitor_dev_for_events recurse through the stack of LVs.
1752   Clean up some more compiler warnings.
1753   Some whitespace tidy-ups.
1754   Use stack return macros throughout.
1755   Rely upon internally-cached PV labels while corresponding VG lock is held.
1756
1757 Version 2.02.32 - 29th January 2008
1758 ===================================
1759   Fix two check_lv_segments error messages to show whole segment.
1760   Refactor mirror log attachment code.
1761   Fix internal metadata corruption in lvchange --resync. (2.02.30)
1762   Fix new parameter validation in vgsplit and test mode. (2.02.30)
1763   Remove redundant cnxman-socket.h file from clvmd directory.
1764   Fix pvs, vgs, lvs error exit status on some error paths.
1765
1766 Version 2.02.31 - 19th January 2008
1767 ===================================
1768   Fix lvcreate --nosync not to wait for non-happening sync. (2.02.30)
1769   Add very_verbose lvconvert messages.
1770   Avoid readahead error message with default setting of lvcreate -M1. (2.02.29)
1771
1772 Version 2.02.30 - 17th January 2008
1773 ===================================
1774   Set default readahead to twice maximium stripe size.
1775   Reinstate VG extent size and stripe size defaults (halved). (2.02.29)
1776   Add lists of stacked LV segments using each LV to the internal metadata.
1777   Change vgsplit -l (for unimplemented --list) into --maxlogicalvolumes.
1778   Fix process_all_pvs to detect non-orphans with no MDAs correctly.
1779   Don't use block_on_error with mirror targets version 1.12 and above.
1780   Update vgsplit to accept vgcreate options when new VG is destination.
1781   Update vgsplit to accept existing VG as destination.
1782   lvconvert waits for completion of initial sync by default.
1783   Refactor vgcreate for parameter validation and add tests.
1784   Add new convert_lv field to lvs output.
1785   Print warning when lvm tools are running as non-root.
1786   Add snapshot dmeventd library (enables dmeventd snapshot monitoring).
1787   Prevent pvcreate from overwriting MDA-less PVs belonging to active VGs.
1788   Fix a segfault if using pvs with --all argument. (2.02.29)
1789   Update --uuid argument description in man pages.
1790   Fix vgreduce PV list processing not to process every PV in the VG. (2.02.29)
1791   Extend lvconvert to use polldaemon.
1792   Add support for stacked mirrors.
1793   Major restructuring of pvmove and lvconvert layer manipulation code.
1794   Replace tools/fsadm with scripts/fsadm.sh.
1795   Append fields to report/pvsegs_cols_verbose.
1796   Permit LV segment fields with PV segment reports.
1797   Add seg_start_pe and seg_pe_ranges to reports.
1798
1799 Version 2.02.29 - 5th December 2007
1800 ===================================
1801   Make clvmd backup vg metadata on remote nodes.
1802   Refactor pvmove allocation code.
1803   Decode cluster locking state in log message.
1804   Change file locking state messages from debug to very verbose.
1805   Fix --addtag to drop @ prefix from name.
1806   Stop clvmd going haywire if a pre_function fails.
1807   Convert some vg_reads into vg_lock_and_reads.
1808   Avoid nested vg_reads when processing PVs in VGs and fix associated locking.
1809   Accept sizes with --readahead argument.
1810   Store size arguments as sectors internally.
1811   Attempt to remove incomplete LVs with lvcreate zeroing/activation problems.
1812   Add read_ahead activation code.
1813   Add activation/readahead configuration option and FMT_RESTRICTED_READAHEAD.
1814   Extend readahead arg to accept "auto" and "none".
1815   Add lv_read_ahead and lv_kernel_read_ahead fields to reports and lvdisplay.
1816   Prevent lvconvert -s from using same LV as origin and snapshot.
1817   Fix human-readable output of odd numbers of sectors.
1818   Add pv_mda_free and vg_mda_free fields to reports for raw text format.
1819   Add LVM2 version to 'Generated by' comment in metadata.
1820   Show 'not usable' space when PV is too large for device in pvdisplay.
1821   Ignore and fix up any excessive device size found in metadata.
1822   Fix error message when fixing up PV size in lvm2 metadata (2.02.11).
1823   Fix orphan-related locking in pvdisplay and pvs.
1824   Fix missing VG unlocks in some pvchange error paths.
1825   Add some missing validation of VG names.
1826   Rename validate_vg_name() to validate_new_vg_name().
1827   Change orphan lock to VG_ORPHANS.
1828   Change format1 to use ORPHAN as orphan VG name.
1829   Convert pvchange, pvdisplay, pvscan to use is_orphan()
1830   Add is_orphan_vg() and change all hard-coded checks to use it.
1831   Detect md superblocks version 1.0, 1.1 and 1.2.
1832   Add _alloc_pv() and _free_pv() from _pv_create() code and fix error paths.
1833   Add pv_dev_name() to access PV device name.
1834   Add const attributes to pv accessor functions.
1835   Refactor vg_add_snapshot() and lv_create_empty().
1836   Handle new sysfs subsystem/block/devices directory structure.
1837   Run test with LVM_SYSTEM_DIR pointing to private root and /dev dirs.
1838   Fix a bug in lvm_dump.sh checks for lvm/dmsetup binaries.
1839   Fix underquotations in lvm_dump.sh.
1840   Refactor lvcreate stripe and mirror parameter validation.
1841   Print --help output to stdout, not stderr.
1842   After a cmdline processing error, don't print help text but suggest --help.
1843   Add %PVS extents option to lvresize, lvextend, and lvcreate.
1844   Add 'make check' to run tests in new subdirectory 'test'.
1845   Moved the obsolete test subdirectory to old-tests.
1846   Cope with relative paths in configure --with-dmdir.
1847   Remove no-longer-correct restrictions on PV arg count with stripes/mirrors.
1848   Fix strdup memory leak in str_list_dup().
1849   Link with -lpthread when static SELinux libraries require that.
1850   Detect command line PE values that exceed their 32-bit range.
1851   Include strerror string in dev_open_flags' stat failure message.
1852   Move guts of pvresize into library.
1853   Avoid error when --corelog is provided without --mirrorlog. (2.02.28)
1854   Correct --mirrorlog argument name in man pages (not --log).
1855   Clear MIRROR_NOTSYNCED LV flag when converting from mirror to linear.
1856   Modify lvremove to prompt for removal if LV active on other cluster nodes.
1857   Add '-f' to vgremove to force removal of VG even if LVs exist.
1858
1859 Version 2.02.28 - 24th August 2007
1860 ==================================
1861   Fix clvmd logging so you can get lvm-level debugging out of it.
1862   Introduce VG_GLOBAL lock type for vgscan/pvscan to trigger clvmd -R.
1863   Change locking_flags from int to uint32_t.
1864   Fix clvmd -R, so it fully refreshes the caches.
1865   Change lvconvert_mirrors to use mirror segtype not striped.
1866   Fix lvconvert_mirrors detection of number of existing mirrors.
1867   Clean up numerous compiler warnings that appeared in recent releases.
1868   Remove several unused parameters from _allocate().
1869   Only permit --force, --verbose and --debug arguments to be repeated.
1870   Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1.
1871   Move guts of vgremove and lvremove into library, including yes_no_prompt.
1872   Allow clvmd debug to be turned on in a running daemon using clvmd -d [-C].
1873   Update to use autoconf 2.61, while still supporting 2.57.
1874   Add more cluster info to lvmdump.
1875   Add further const attributes throughout.
1876   Add support for renaming mirrored LVs.
1877   Factor out core of lvrename() to library function.
1878   Add --mirrorlog argument to specify log type for mirrors.
1879   Don't attempt to monitor devices if their creation failed in _lv_activate.
1880   Don't leak a file descriptor in fcntl_lock_file() when fcntl fails.
1881   Replace create_dir with dm_create_dir.
1882   Detect stream write failure reliably with lvm_fclose using dm_fclose.
1883   Fix clvmd if compiled with gulm support. (2.02.26)
1884   Fix lvdisplay man page to say LV size is reported in sectors, not KB.
1885   Add vg_lock_and_read() external library function.
1886   Fix loading of persistent cache if cache_dir is used. (2.02.23)
1887   Reduce _compare_paths lstat error message from log_error to log_very_verbose.
1888   Create util.h with last_path_component replacing strdup + basename.
1889   Use gcc's printf attribute wherever possible.
1890   In _line_append, use "sizeof buf - 1" rather than equivalent "4095".
1891   Introduce is_same_inode macro, now including a comparison of st_dev.
1892   Don't leak a file descriptor in _lock_file() when flock fails.
1893   Add SUN's LDOM virtual block device (vdisk) and ps3disk to filters.
1894   Split metadata-external.h out from metadata.h for the tools to use.
1895
1896 Version 2.02.27 - 17th July 2007
1897 ================================
1898   Fix snapshot cow area deactivation if origin is not active. (2.02.13)
1899   Fix configure libdevmapper.h check when --with-dmdir is used.
1900   Turn _add_pv_to_vg() into external library function add_pv_to_vg().
1901   Add pv_by_path() external library function.
1902   Tidy clvmd-openais of redundant bits, and improve an error report.
1903   Cope with find_seg_by_le() failure in check_lv_segments().
1904   Call dev_iter_destroy() if _process_all_devs() is interrupted by sigint.
1905   Add vg_mda_count and pv_mda_count columns to reports.
1906   Fix dumpconfig to use log_print instead of stdout directly.
1907   Remove unused parameter 'fid' from _add_pv_to_vg.
1908   Add kernel and device-mapper targets versions to lvmdump.
1909   Replace BSD (r)index with C89 str(r)chr.
1910   Handle vgsplit of an entire VG as a vgrename.
1911   Reinitialise internal lvmdiskscan variables when called repeatedly.
1912   Fix missing lvm_shell symbol in lvm2cmd library. (2.02.23)
1913   Add vg_status function and clean up vg->status in tools directory.
1914   Add --ignoremonitoring to disable all dmeventd interaction.
1915   Remove get_ prefix from get_pv_* functions.
1916   clvmd-openais now uses cpg_local_get() to get nodeid, rather than Clm.
1917   Print warnings to stderr instead of stdout.
1918
1919 Version 2.02.26 - 15th June 2007
1920 ================================
1921   Update vgcfgrestore man page.
1922   Allow keyboard interrupt during user prompts when appropriate.
1923   Remove unused clvmd system-lv code.
1924   Replace many physical_volume struct dereferences with new get_pv_* functions.
1925   Suppress a benign compile-time warning.
1926   Convert find_pv_in_vg_by_uuid and pv_create to use PV handles.
1927   Add wrappers to some functions in preparation for external LVM library.
1928   Add -f to vgcfgrestore to list metadata backup files.
1929   Add vg_check_status to consolidate vg status checks and error messages.
1930   Add pvdisplay --maps implementation.
1931   Remove unsupported LVM1 options from vgcfgrestore man page.
1932   Update vgcfgrestore man page to show mandatory VG name.
1933   Update vgrename man page to include UUID and be consistent with lvrename.
1934   Add (experimental) OpenAIS support to clvmd.
1935   Fix deactivation code to follow dependencies and remove symlinks.
1936   Fix and clarify vgsplit error messages.
1937   Fix a segfault in device_is_usable() if a device has no table.
1938   Add some more debug messages to clvmd startup.
1939   Misc clvmd cleanups.
1940
1941 Version 2.02.25 - 27th April 2007
1942 =================================
1943   Fix get_config_uint64() to read a 64-bit value not a 32-bit one.
1944   Add -Wformat-security and change one fprintf() to fputs().
1945   Move regex functions into libdevmapper.
1946   Change some #include lines to search only standard system directories.
1947   Add devices/preferred_names config regex list for displayed device names.
1948   Free a temporary dir string in fcntl_lock_file() after use.
1949   Fix a dm_pool_destroy() in matcher_create().
1950   Introduce goto_bad macro.
1951   Fix warnings on x86_64 involving ptrdiff_t in log_error messages.
1952   Update pvck to include text metadata area and record detection.
1953   Add support functions for token counting in config file extracts.
1954   Update pvck to read labels on disk, with --labelsector parameter.
1955   Add count_chars and count_chars_len functions.
1956   Add /sys/block listings to lvm_dump.sh.
1957   Make lvm_dump.sh list /dev recursively.
1958   Fix thread race in clvmd.
1959   Add scan_sector param to label_read and _find_labeller.
1960   Make clvmd cope with quorum devices.
1961   Add extra internal error checking to clvmd.
1962   Add dev_read_circular.
1963   Add pvck command stub.
1964   Update lists of attribute characters in man pages.
1965   Change cling alloc policy attribute character from 'C' to l'.
1966   Fix creation and conversion of mirrors with tags.
1967   Fix vgsplit for lvm1 format (set and validate VG name in PVs metadata).
1968   Split metadata areas in vgsplit properly.
1969
1970 Version 2.02.24 - 19th March 2007
1971 =================================
1972   Fix processing of exit status in init scripts
1973   Fix vgremove to require at least one vg argument.
1974   Fix reading of striped LVs in LVM1 format.
1975   Flag nolocking as clustered so clvmd startup sees clustered LVs. (2.02.10)
1976   Add a few missing pieces of vgname command line validation.
1977   Support the /dev/mapper prefix on most command lines.
1978
1979 Version 2.02.23 - 8th March 2007
1980 ================================
1981   Fix vgrename active LV check to ignore differing vgids.
1982   Remove no-longer-used uuid_out parameter from activation info functions.
1983   Fix two more segfaults if an empty config file section encountered.
1984   Move .cache file into a new /etc/lvm/cache directory by default.
1985   Add devices/cache_dir & devices/cache_file_prefix, deprecating devices/cache.
1986   Create directory in fcntl_lock_file() if required.
1987   Exclude readline support from lvm.static.
1988   Fix a leak in a reporting error path (2.02.19).
1989
1990 Version 2.02.22 - 13th February 2007
1991 ====================================
1992   Correct -b and -P on a couple of man pages.
1993   Add global/units to example.conf.
1994   Fix loading of segment_libraries.
1995   If a PV reappears after it was removed from its VG, make it an orphan.
1996   Don't update metadata automatically if VGIDs don't match.
1997   Fix some vgreduce --removemissing command line validation.
1998
1999 Version 2.02.21 - 30th January 2007
2000 ===================================
2001   Add warning to lvm2_monitoring_init_rhel4 if attempting to stop monitoring.
2002   Fix vgsplit to handle mirrors.
2003   Reorder fields in reporting field definitions.
2004   Fix vgs to treat args as VGs even when PV fields are displayed.
2005   Fix md signature check to handle both endiannesses.
2006
2007 Version 2.02.20 - 25th January 2007
2008 ===================================
2009   dmeventd mirror sets ignore_suspended_devices and avoids scanning mirrors.
2010   Add devices/ignore_suspended_devices to ignore suspended dm devices.
2011   Add some missing close() and fclose() return code checks.
2012   Fix exit statuses of reporting tools (2.02.19).
2013   Add init script for dmeventd monitoring.
2014   lvm.static no longer interacts with dmeventd unless explicitly asked to.
2015   Add field definitions to report help text.
2016   Remove unnecessary cmd arg from target_*monitor_events().
2017   Add private variable to dmeventd shared library interface.
2018   Long-lived processes write out persistent dev cache in refresh_toolcontext().
2019   Fix refresh_toolcontext() always to wipe persistent device filter cache.
2020   Add is_long_lived to toolcontext.
2021   Add --clustered to man pages.
2022   Streamline dm_report_field_* interface.
2023   Change remaining dmeventd terminology 'register' to 'monitor'.
2024   Update reporting man pages.
2025   No longer necessary to specify alignment type for report fields.
2026
2027 Version 2.02.19 - 17th January 2007
2028 ===================================
2029   Fix a segfault if an empty config file section encountered.
2030   Move basic reporting functions into libdevmapper.
2031   Fix partition table processing after sparc changes (2.02.16).
2032   Fix cmdline PE range processing segfault (2.02.13).
2033   Some libdevmapper-event interface changes.
2034   Report dmeventd mirror monitoring status.
2035   Fix dmeventd mirror status line processing.
2036
2037 Version 2.02.18 - 11th January 2007
2038 ===================================
2039   Revised libdevmapper-event interface for dmeventd.
2040   Remove dmeventd mirror status line word limit.
2041   Use CFLAGS when linking so mixed sparc builds can supply -m64.
2042   Prevent permission changes on active mirrors.
2043   Print warning instead of error message if lvconvert cannot zero volume.
2044   Add snapshot options to lvconvert man page.
2045   dumpconfig accepts a list of configuration variables to display.
2046   Change dumpconfig to use --file to redirect output to a file.
2047   Avoid vgreduce error when mirror code removes the log LV.
2048   Remove 3 redundant AC_MSG_RESULTs from configure.in.
2049   Free memory in _raw_read_mda_header() error paths.
2050   Fix ambiguous vgsplit error message for split LV.
2051   Fix lvextend man page typo.
2052   Add configure --with-dmdir to compile against a device-mapper source tree.
2053   Use no flush suspending for mirrors.
2054   Add dmeventd_mirror register_mutex, tidy initialisation & add memlock.
2055   Fix create mirror with name longer than 22 chars.
2056   Fix some activate.c prototypes when compiled without devmapper.
2057   Fix dmeventd mirror to cope if monitored device disappears.
2058
2059 Version 2.02.17 - 14th December 2006
2060 ====================================
2061   Add missing pvremove error message when device doesn't exist.
2062   When lvconvert allocates a mirror log, respect parallel area constraints.
2063   Use loop to iterate through the now-ordered policy list in _allocate().
2064   Check for failure to allocate just the mirror log.
2065   Introduce calc_area_multiple().
2066   Support mirror log allocation when there is only one PV: area_count now 0.
2067   Fix detection of smallest area in _alloc_parallel_area() for cling policy.
2068   Add manpage entry for clvmd -T
2069   Fix gulm operation of clvmd, including a hang when doing lvchange -aey
2070   Fix hang in clvmd if a pre-command failed.
2071
2072 Version 2.02.16 - 1st December 2006
2073 ===================================
2074   Fix VG clustered read locks to use PR not CR.
2075   Adjust some alignments for ia64/sparc.
2076   Fix mirror segment removal to use temporary error segment.
2077   Always compile debug logging into clvmd.
2078   Add startup timeout to RHEL4 clvmd startup script.
2079   Add -T (startup timeout) switch to clvmd.
2080   Improve lvm_dump.sh robustness.
2081   Update lvm2create_initrd to support gentoo.
2082
2083 Version 2.02.15 - 21st November 2006
2084 ====================================
2085   Fix clvmd_init_rhel4 line truncation (2.02.14).
2086   Install lvmdump by default.
2087   Fix check for snapshot module when activating snapshot.
2088   Fix pvremove error path for case when PV is in use.
2089   Warn if certain duplicate config file entries are seen.
2090   Enhance lvm_dump.sh for sysreport integration and add man page.
2091   Fix --autobackup argument which could never disable backups.
2092   Fix a label_verify error path.
2093
2094 Version 2.02.14 - 10th November 2006
2095 ====================================
2096   Fix adjusted_mirror_region_size() to handle 64-bit size.
2097   Add some missing bounds checks on 32-bit extent counters.
2098   Add Petabyte and Exabyte support.
2099   Fix lvcreate error message when 0 extents requested.
2100   lvremove man page: volumes must be cluster inactive before being removed.
2101   Protect .cache manipulations with fcntl locking.
2102   Change .cache timestamp comparisons to use ctime.
2103   Fix mirror log LV writing to set all bits in whole LV.
2104   Fix clustered VG detection and default runlevels in clvmd_init_rhel4.
2105   Fix high-level free space check for partial allocations.
2106
2107 Version 2.02.13 - 27th October 2006
2108 ===================================
2109   Add couple of missing files to tools/Makefile CLEAN_TARGETS.
2110   When adding snapshot leave cow LV mapped device active after zeroing.
2111   Fix a clvmd debug message.
2112   Add dev_flush() to set_lv().
2113   Add lvchange --resync.
2114   Perform high-level free space check before each allocation attempt.
2115   Don't allow a node to remove an LV that's exclusively active on anther node.
2116   Cope if same PV is included more than once in cmdline PE range list.
2117   Set PV size to current device size if it is found to be zero.
2118   Add segment parameter to target_present functions.
2119
2120 Version 2.02.12 - 16th October 2006
2121 ===================================
2122   Fix pvdisplay to use vg_read() for non-orphans.
2123   Fall back to internal locking if external locking lib is missing or fails.
2124   Retain activation state after changing LV minor number with --force.
2125   Propagate clustered flag in vgsplit and require resizeable flag.
2126
2127 Version 2.02.11 - 12th October 2006
2128 ===================================
2129   Add clvmd function to return the cluster name. not used by LVM yet.
2130   Add cling allocation policy.
2131   Change _check_contiguous() to use _for_each_pv().
2132   Extend _for_each_pv() to allow termination without error.
2133   Abstract _is_contiguous().
2134   Remove duplicated pv arg from _check_contiguous().
2135   Accept regionsize with lvconvert.
2136   Add report columns with underscore before field names ending 'size'.
2137   Correct regionsize default on lvcreate man page (MB).
2138   Fix clvmd bug that could cause it to die when a node with a long name crashed.
2139   Add device size to text metadata.
2140   Fix format_text mda_setup pv->size and pv_setup pe_count calculations.
2141   Fix _for_each_pv() for mirror with core log.
2142   Add lvm_dump.sh script to create a tarball of debugging info from a system.
2143   Capture error messages in clvmd and pass them back to the user.
2144   Remove unused #defines from filter-md.c.
2145   Make clvmd restart init script wait until clvmd has died before starting it.
2146   Add -R to clvmd which tells running clvmds to reload their device cache.
2147   Add LV column to reports listing kernel modules needed for activation.
2148   Show available fields if report given invalid field. (e.g. lvs -o list)
2149   Add timestamp functions with --disable-realtime configure option.
2150   Add %VG, %LV and %FREE suffices to lvcreate/lvresize --extents arg.
2151   Fix two potential NULL pointer derefs in error cases in vg_read().
2152   Separate --enable-cluster from locking lib options in lvmconf.sh.
2153   Add a missing comma in lvcreate man page.
2154
2155 Version 2.02.10 - 19th September 2006
2156 =====================================
2157   Fix lvconvert mirror change case detection logic.
2158   Fix mirror log detachment so it correctly becomes a standalone LV.
2159   Extend _check_contiguous() to detect single-area LVs.
2160   Include mirror log (untested) in _for_each_pv() processing.
2161   Use MIRROR_LOG_SIZE constant.
2162   Remove struct seg_pvs from _for_each_pv() to generalise.
2163   Avoid adding duplicates to list of parallel PVs to avoid.
2164   Fix several incorrect comparisons in parallel area avoidance code.
2165   Fix segment lengths when flattening existing parallel areas.
2166   Log existing parallel areas prior to allocation.
2167   Fix mirror log creation when activation disabled.
2168   Don't attempt automatic recovery without proper locking.
2169   When using local file locking, skip clustered VGs.
2170   Add fallback_to_clustered_locking and fallback_to_local_locking parameters.
2171   lvm.static uses built-in cluster locking instead of external locking.
2172   Don't attempt to load shared libraries if built statically.
2173   Change default locking_lib to liblvm2clusterlock.so.
2174   Add skip_dev_dir() to process command line VGs.
2175   Stop clvmd complaining about nodes that have left the cluster.
2176   Move lvm_snprintf(), split_words() and split_dm_name() into libdevmapper.
2177   Add lvconvert man page.
2178   Add mirror options to man pages.
2179   Prevent mirror renames.
2180   Move CMDLIB code into separate file and record whether static build.
2181
2182 Version 2.02.09 - 17th August 2006
2183 ==================================
2184   Fix PE_ALIGN for pagesize over 32KB.
2185   Separate out LVM1_PE_ALIGN and pe_align().
2186   Add lvm_getpagesize wrapper.
2187   Add --maxphysicalvolumes to vgchange.
2188
2189 Version 2.02.08 - 15th August 2006
2190 ==================================
2191   Add checks for duplicate LV name, lvid and PV id before writing metadata.
2192   Report all sanity check failures, not just the first.
2193   Fix missing lockfs on first snapshot creation.
2194   Add unreliable --trustcache option to reporting commands.
2195   Fix locking for mimage removal.
2196   Fix clvmd_init_rhel4 'status' exit code.
2197
2198 Version 2.02.07 - 17th July 2006
2199 ================================
2200   Fix activation logic in lvchange --persistent.
2201   Don't ignore persistent minor numbers when activating.
2202   Use RTLD_GLOBAL when loading shared libraries.
2203   Add some forgotten memlock checks to _vg_read to protect against full scans.
2204   Add mutex to dmeventd_mirror to avoid concurrent execution.
2205   Fix vgreduce --removemissing to return success if VG is already consistent.
2206   Fix return code if VG specified on command line is not found.
2207   Fix PV tools to include orphaned PVs in default output again.
2208   Fixed unaligned access when using clvm.
2209   Fix an extra dev_close in a label_read error path.
2210   Append patches to commit emails.
2211   Fix target_register_events args.
2212   Prevent snapshots of mirrors.
2213   Add DISTCLEAN_TARGETS to make template for configure.h.
2214   More fixes to error paths.
2215   Fix lvcreate corelog validation.
2216   Add --config for overriding most config file settings from cmdline.
2217   Quote arguments when printing command line.
2218   Remove linefeed from 'initialising logging' message.
2219   Add 'Completed' debug message.
2220   Don't attempt library exit after reloading config files.
2221   Always compile with libdevmapper, even if device-mapper is disabled.
2222
2223 Version 2.02.06 - 12th May 2006
2224 ===============================
2225   Propagate --monitor around cluster.
2226   Add --monitor to vgcreate and lvcreate to control dmeventd registration.
2227   Filter LCK_NONBLOCK in clvmd lock_vg.
2228   Add --nosync to lvcreate with LV flag NOTSYNCED.
2229   Use mirror's uuid for a core log.
2230   Add mirror log fault-handling policy.
2231   Improve mirror warning messages and tidy dmeventd syslog output.
2232   Propagate nosync flag around cluster.
2233   Allow vgreduce to handle mirror log failures.
2234   Add --corelog to lvcreate and lvconvert.
2235   Create a log header for replacement in-sync mirror log.
2236   Use set_lv() and dev_set() to wipe sections of devices.
2237   Add mirror_in_sync() flag to avoid unnecessary resync on activation.
2238   Add mirror_library description to example.conf.
2239   Fix uuid_from_num() buffer overrun.
2240   Make SIZE_SHORT the default for display_size().
2241   Fix some memory leaks in error paths found by coverity.
2242   Use C99 struct initialisers.
2243   Move DEFS into configure.h.
2244   Clean-ups to remove miscellaneous compiler warnings.
2245   Improve stripe size validation.
2246   Increase maximum stripe size limit to physical extent size for lvm2 metadata.
2247   Fix activation code to check for pre-existing mirror logs.
2248   Tighten region size validation.
2249   Ignore empty strings in config files.
2250   Require non-zero regionsize and document parameter on lvcreate man page.
2251   Invalidate cache if composition of VG changed externally.
2252
2253 Version 2.02.05 - 21st April 2006
2254 =================================
2255   Fix vgid string termination in recent cache code.
2256
2257 Version 2.02.04 - 19th April 2006
2258 =================================
2259   Check for libsepol.
2260   Add some cflow & scope support.
2261   Separate out DEFS from CFLAGS.
2262   Remove inlines and use unique function names.
2263
2264 Version 2.02.03 - 14th April 2006
2265 =================================
2266   vgrename accepts vgid and exported VG.
2267   Add --partial to pvs.
2268   When choosing between identically-named VGs, also consider creation_host.
2269   Provide total log suppression with 2.
2270   Fix vgexport/vgimport to set/reset PV exported flag so pv_attr is correct.
2271   Add vgid to struct physical_volume and pass with vg_name to some functions.
2272   If two or more VGs are found with the same name, use one that is not exported.
2273   Whenever vgname is captured, also capture vgid and whether exported.
2274   Remove an incorrect unlock_vg() from process_each_lv().
2275   Update extent size information in vgchange and vgcreate man pages.
2276   Introduce origin_from_cow() and lv_is_visible().
2277   pvremove without -f now fails if there's no PV label.
2278   Support lvconvert -s.
2279   Suppress locking library load failure message if --ignorelockingfailure.
2280   Propagate partial mode around cluster.
2281   Fix archive file expiration.
2282   Fix dmeventd build.
2283   clvmd now uses libcman rather than cman ioctls.
2284   clvmd will allow new cman to shutdown on request.
2285
2286 Version 2.02.02 - 7th February 2006
2287 ===================================
2288   Add %.so: %.a make template rule.
2289   Switchover library building to use LIB_SUFFIX.
2290   Only do lockfs filesystem sync when suspending snapshots.
2291   Always print warning if activation is disabled.
2292   vgreduce removes mirror images.
2293   Add --mirrorsonly to vgreduce.
2294   vgreduce replaces active LVs with error segment before removing them.
2295   Set block_on_error parameter if available.
2296   Add target_version.
2297   Add details to format1 'Invalid LV in extent map' error message.
2298   Fix lvscan snapshot full display.
2299   Bring lvdisplay man page example into line.
2300   Add mirror dmeventd library.
2301   Add some activation logic to remove_mirror_images().
2302   lvconvert can remove specified PVs from a mirror.
2303   lvconvert turns an existing LV into a mirror.
2304   Allow signed mirrors arguments.
2305   Move create_mirror_log() into toollib.
2306   Determine parallel PVs to avoid with ALLOC_NORMAL allocation.
2307   Fix lv_empty.
2308
2309 Version 2.02.01 - 23rd November 2005
2310 ====================================
2311   Fix lvdisplay cmdline to accept snapshots.
2312   Fix open RO->RW promotion.
2313   Fix missing vg_revert in lvcreate error path.
2314
2315 Version 2.02.00 - 10th November 2005
2316 ====================================
2317   Extend allocation areas to avoid overflow with contiguous with other PVs.
2318   Stop lvcreate attempting to wipe zero or error segments.
2319   Added new lvs table attributes.
2320   Separated out activation preload.
2321   Moved activation functions into libdevmapper.
2322   Fixed build_dm_name.
2323   Add return macros.
2324   Added xen xvd devices.
2325   Clear up precommitted metadata better.
2326   A pvresize implementation.
2327   Fix contiguous allocation when there are no preceding segments.
2328   Add mirror_seg pointer to lv_segment struct.
2329   Only keep a device open if it's known to belong to a locked VG.
2330   Fix lvdisplay to show all mirror destinations.
2331   Replacement suspend code using libdevmapper dependency tree.
2332   Add DEFS to make.tmpl.
2333   Use dm_is_dm_major instead of local copy.
2334   Allow mapped devices to be used as PVs.
2335   Move set_selinux_context into libdevmapper.
2336   Fix automatic text metadata buffer expansion (using macro).
2337   Cache formatted text metadata buffer between metadata area writes.
2338   Add pe_start field to pvs.
2339   Add 'LVM-' prefix to uuids.
2340   Split lv_segment_area from lv_segment to permit extension.
2341   Replacement deactivation code using libdevmapper dependency tree.
2342   Simplify dev_manager_info().
2343   Attempt to load missing targets using modprobe.
2344   Add -a to lvscan.
2345   Move mknodes into libdevmapper.
2346   Move bitset, hash, pool and dbg_malloc into libdevmapper.
2347
2348 Version 2.01.15 - 16th October 2005
2349 ===================================
2350   Refuse to run pvcreate/pvremove on devices we can't open exclusively.
2351   Use ORPHAN lock definition throughout.
2352   Validate chunksize in lvcreate.
2353   Reduce chunksize limit to 512k.
2354   Fix chunksize field in reports.
2355   Don't hide snapshots from default 'lvs' output.
2356   Add is_dm_major() for use in duplicate device detection in lvmcache_add().
2357   Really switch device number in lvmcache when it says it is doing so.
2358   Option for bitset memory allocation using malloc as well as pool.
2359   Don't assume exactly two mirrors when parsing mirror status.
2360   Suppress fsync() error message on filesystems that don't support it.
2361   Fix yes_no_prompt() error handling.
2362   Add lvm.conf comment warning against multiple filter lines.
2363   Tidy lvmconf.sh.
2364   Add format1 dev_write debug messages.
2365   Add clustered VG attribute to report.
2366   Move lvconvert parameters into struct lvconvert_params.
2367   Add clustered VG flag to LV lock requests.
2368   Change LV locking macros to take lv instead of lvid.
2369   Prepend 'cluster' activation parameter to mirror log when appropriate.
2370   Pass exclusive flag to lv_activate and on to target activation code.
2371   Prevent snapshot creation in a clustered VG for now.
2372   Factor out adjusted_mirror_region_size() and generate_log_name_format().
2373   Move compose_log_line() into mirror directory.
2374   Factor out _get_library_path().
2375   Don't kill idling clvmd threads.
2376   clvmd no longer takes out locks for non-clustered LVs.
2377   Recognise ATA over Ethernet (aoe) devices.
2378
2379 Version 2.01.14 - 4th August 2005
2380 =================================
2381   Fix lvconvert PV parameter in help string.
2382   Prevent snapshots getting activated in a clustered VG.
2383   Separate out _build_dev_string.
2384   Move zero_lv to toollib.
2385   Fix pool format handler to work with pv segment code.
2386
2387 Version 2.01.13 - 13th July 2005
2388 ================================
2389   Fix pvmove segment splitting.
2390   Abstract vg_validate.
2391   Only make one attempt at contiguous allocation.
2392   Fix lvm1 format metadata read.
2393   Fix lvm1 format non-mirror lvcreate.
2394
2395 Version 2.01.12 - 14th June 2005
2396 ================================
2397   Various allocation-related pvmove fixes.
2398   Log an error if clvmd can't resolve a host name got from CCS.
2399   Fix potential spin loop in clvmd.
2400
2401 Version 2.01.11 - 13th June 2005
2402 ================================
2403   Added lvmconf.sh.
2404   Use matchpathcon mode parameter.
2405   Don't defer closing dead FDs in clvmd.
2406   Remove hard-coded 64k text metadata writing restriction.
2407   Make VG name restrictions consistent.
2408   Introduce lvconvert.  So far only removes mirror images.
2409   Allow mirror images to be resized.
2410   Allow mirror images to have more than one segment.
2411   Centralise restrictions on LV names.
2412   Always insert an intermediate layer for mirrors.
2413   Suppress hidden LVs from reports unless --all is given.
2414   Use square brackets for hidden LVs in reports.
2415   Allow the creation of mirrors with contiguous extents.
2416   Always perform sanity checks against metadata before committing it to disk.
2417   Split lv_extend into two steps: choosing extents + allocation to LV(s).
2418   Add mirror log region size to metadata.
2419   Use list_iterate_items throughout and add list*back macros.
2420   Introduce seg_ macros to access areas.
2421   Add segtype_is_ macros.
2422   Support tiny metadata areas for pool conversions.
2423   Mirror activation handles disk log as well as core.
2424   Activation code recognises mirror log dependency.
2425   Add mirror_log and regionsize fields to report.
2426   Fix non-orphan pvchange -u.
2427   Fix vgmerge to handle duplicate LVIDs.
2428   Move archiver code from tools into library.
2429   vgscan/change/display/vgs automatically create metadata backups if needed.
2430   Merge cloned allocation functions.
2431   Fix contiguous allocation policy with linear.
2432   Cope with missing format1 PVs again.
2433   Remove lists of free PV segments.
2434   Simplify pv_maps code and remove slow bitset algorithm.
2435   Red-Hat-ify the clvmd rhel4 initscript.
2436   %Zu->%zu
2437   Fix loopfiles alias alloc & mem debugging.
2438   Un-inline dbg_strdup.
2439   lv_reduce tidying.
2440   Remove some unnecessary parameters.
2441   Introduce seg_is macros.
2442
2443 Version 2.01.10 - 3rd May 2005
2444 ==============================
2445   Don't create backup and archive dirs till needed.
2446   Reinstate full PV size when removing from VG.
2447   Support loopfiles for testing.
2448   Tidy lv_segment interface.
2449   pv_segment support.
2450   vgchange --physicalextentsize
2451   Internal snapshot restructuring.
2452   Remove unused internal non-persistent snapshot option.
2453   Allow offline extension of snapshot volumes.
2454   Move from 2-step to 3-step on-disk metadata commit.
2455   Scan ramdisks too and allow non-O_DIRECT fallback.
2456   Annotate, tidy and extend list.h.
2457   Alignment tidying.
2458   Make clvmd work around some "bugs" in gulm's node state notifications.
2459   Tidy clvmd's SIGHUP handler
2460
2461 Version 2.01.09 - 4th April 2005
2462 ================================
2463   Add --ignorelockingfailure to vgmknodes.
2464   clvmd: Don't allow user operations to start until the lvm thread is fully up.
2465   clvmd-gulm: set KEEPALIVE on sockets.
2466
2467 Version 2.01.08 - 22nd March 2005
2468 =================================
2469   Add clustered attribute so vgchange can identify clustered VGs w/o locking.
2470   Improve detection of external changes affecting internal cache.
2471   Add 'already in device cache' debug message.
2472   Add -a to pvdisplay -C.
2473   Avoid rmdir opendir error messsages when dir was already removed.
2474   Tighten signal handlers.
2475   Avoid some compiler warnings.
2476   Additional rename failure error message.
2477   read/write may be macros.
2478   clvmd: don't take out lvm thread lock at startup, it only protects jobs list.
2479
2480 Version 2.01.07 - 8th March 2005
2481 ================================
2482   Cope with new devices appearing by rescanning /dev if a uuid can't be found.
2483   Remove DESTDIR from LVM_SHARED_PATH.
2484   clvmd fixes: make FDs close-on-exec
2485                gulm unlocks VG & orphan locks at startup in case they are stale
2486                gulm now unlocks VG & orphan locks if client dies.
2487
2488 Version 2.01.06 - 1st March 2005
2489 ================================
2490   Suppress 'open failed' error messages during scanning.
2491   Option to suppress warnings of file descriptors left open.
2492   Fix default value of metadatacopies in documentation (2->1).
2493   Fix clvmd-gulm locking.
2494   ./configure --enable-debug now enables debugging code in clvmd.
2495   Fix clvmd-gulm node up/down code so it actually works.
2496   clvmd-gulm now releases locks when shut down.
2497
2498 Version 2.01.05 - 18th February 2005
2499 ====================================
2500   Static binary invokes dynamic binary if appropriate.
2501   Make clvmd config check a little more tolerant.
2502   gulm clvmd can now cope with >1 message arriving in a TCP message.
2503
2504 Version 2.01.04 - 9th February 2005
2505 ===================================
2506   Add fixed offset to imported pool minor numbers.
2507   Update binary pathnames in clvmd_init_rhel4.
2508   lvm2cmd.so should skip the check for open fds.
2509   Remove unused -f from pvmove.
2510   Gulm clvmd doesn't report "connection refused" errors.
2511   clvmd does a basic config file sanity check at startup.
2512   Fix potential thread shutdown race in clvmd.
2513
2514 Version 2.01.03 - 1st February 2005
2515 ===================================
2516   More 64-bit display/report fixes.
2517   More informative startup mesg if can't create /etc/lvm.
2518   Fix snapshot device size bug (since 2.01.01).
2519   clvmd announces startup and cluster connection in syslog.
2520   Gulm clvmd doesn't hang trying to talk to a rebooted node.
2521   Gulm clvmd doesn't print cman error on startup.
2522
2523 Version 2.01.02 - 21st January 2005
2524 ===================================
2525   Update clvmd_init_rhel4: use lvm.static and don't load dlm.
2526   Fix some size_t printing.
2527   Fix 64 bit xlate consts.
2528   Split out pool sptype_names to avoid unused const.
2529   Always fail if random id generation fails.
2530   Recognise gnbd devices.
2531   Fix clvmd startup bug introduced in cman/gulm amalgamation.
2532   Improve reporting of node-specific locking errors.
2533
2534 Version 2.01.01 - 19th January 2005
2535 ===================================
2536   Fix clvmd lv_info_by_lvid open_count.
2537   Store snapshot and origin sizes separately.
2538   Update vgcreate man page.
2539
2540 Version 2.01.00 - 17th January 2005
2541 ===================================
2542   Fix vgscan metadata auto-correction.
2543   Only ask libdevmapper for open_count when we need it.
2544   Adjust RHEL4 clvmd init script priority.
2545   Enable building of CMAN & GULM versions of clvmd into a single binary
2546
2547 Version 2.00.33 - 7th January 2005
2548 ==================================
2549   pvcreate wipes first 4 sectors unless given --zero n.
2550   gulm clvmd now uses new ccsd key names.
2551   gulm clvmd now doesn't ignore the first node in cluster.conf
2552   Improve clvmd failure message if it's already running.
2553   Allow user to kill clvmd during initialisation.
2554   Fix off-by-one error in cluster_locking that could cause read hangs.
2555
2556 Version 2.00.32 - 22nd December 2004
2557 ====================================
2558   Drop static/dl restriction for now.
2559   Fix an error fprintf.
2560   Fix vgdisplay -s. Breaks (undocumented) lvs/pvs/vgs -s instead for now.
2561   Fix device reference counting on re-opens.
2562   Ignore sysfs symlinks when DT_UNKNOWN.
2563   Add clvmd init script for RHEL4.
2564   Skip devices that are too small to be PVs.
2565   Fix pvchange -x segfault with lvm2-format orphan.
2566   Cope with empty msdos partition tables.
2567   Add CONTRIBUTORS file.
2568
2569 Version 2.00.31 - 12th December 2004
2570 ====================================
2571   Reopen RO file descriptors RW if necessary.
2572
2573 Version 2.00.30 - 10th December 2004
2574 ====================================
2575   Additional device-handling debug messages.
2576   Additional verbosity level -vvvv includes line numbers and backtraces.
2577   Verbose messages now go to stderr not stdout.
2578   Close any stray file descriptors before starting.
2579   Refine partitionable checks for certain device types.
2580   Allow devices/types to override built-ins.
2581   Fix lvreduce man page .i->.I
2582   Fix vgsplit man page title.
2583   Fix clvmd man makefile.
2584   Extend dev_open logging.
2585   Make clvmd_fix_conf.sh UNDOable.
2586
2587 Version 2.00.29 - 27th November 2004
2588 ====================================
2589   xlate compilation fix.
2590
2591 Version 2.00.28 - 27th November 2004
2592 ====================================
2593   Fix partition table & md signature detection.
2594   Minor configure/makefile tidy.
2595   Export version.h from tools for clvmd.
2596
2597 Version 2.00.27 - 24th November 2004
2598 ====================================
2599   Trap large memory allocation requests.
2600   Fix to partition table detection code.
2601   Improve filter debug mesgs.
2602   Make clvmd_fix_conf.sh UNDOable
2603
2604 Version 2.00.26 - 23rd November 2004
2605 ====================================
2606   Improve pool debugging stats.
2607   Detect partition table signature.
2608   pvcreate wipes md superblocks. (With --uuid or --restorefile it prompts.)
2609   Separate out md superblock detection code.
2610   Prevent snapshot origin resizing.
2611   Improve a vgremove error message.
2612   Update some man pages.
2613   Allow y/n with -ae args (exclusive activation).
2614   Fixes to lvcreate vgname parsing.
2615   Fix dm_name string size calculation.
2616   Improve clvmd error reporting during startup.
2617   Make clvmd cope with large gaps in node numbers IDs.
2618   Make clvmd initialisation cope better with debugging output.
2619   Tidy clvmd socket callbacks so all work happens outside main loop.
2620   clvmd -V now displays lvm version too.
2621   Add optional gulm build for clvmd
2622
2623 Version 2.00.25 - 29th September 2004
2624 =====================================
2625   Fix return code from rm_link for vgmknodes.
2626   Make clvmd LV hash table thread-safe.
2627   Fix clvmd locking so it will lock out multiple users on the same node.
2628   Fix clvmd VG locking to it can cope with multiple VG locks.
2629   Remove spurious trailing dot in lvreduce man page.
2630   Fix vgremove locking.
2631
2632 Version 2.00.24 - 16th September 2004
2633 =====================================
2634   Fix pool_empty so it really does empty the memory pool.
2635   Rename old segtypes files to segtype.
2636   Some fixes to memory debugging code.
2637   Exclude internal commands formats & segtypes from install.
2638
2639 Version 2.00.23 - 15th September 2004
2640 =====================================
2641   Export dm name build & split functions.
2642   Use O_NOATIME on devices if available.
2643   Write log message when each segtype/format gets initialised.
2644   New commands 'segtypes' and 'formats'.
2645   Suppress pvmove abort message in test mode.
2646   Improve pvcreate/remove device not found error message.
2647   Allow pvmove to move data within the same PV.
2648   Describe how pvmove works on man page.
2649   Test for incompatible format/segtype combinations in lv_extend.
2650   Fix lvchange example on man page.
2651
2652 Version 2.00.22 - 3rd September 2004
2653 ====================================
2654   Fix /dev/vgname perms.
2655   Restructure xlate.h.
2656   Add clvmd man page.
2657
2658 Version 2.00.21 - 19th August 2004
2659 ==================================
2660   Update cnxman-socket.h from cman.
2661   Recognise iseries/vd devices.
2662   Use 'make install_cluster' to install cluster extensions only.
2663   Cope with DT_UNKNOWN in sysfs.
2664   Fix extents_moved metadata size comment.
2665   Remove duplicate line in pvremove help text.
2666   Support variable mirror region size.
2667   Support PE ranges in pvmove source PV.
2668   Fixes to as-yet-unused LV segment splitting code.
2669   Change alloc_areas to pe_ranges and allow suppression of availability checks.
2670   Add dev_size column to pvs.
2671   Add report columns for in-kernel device number.
2672
2673 Version 2.00.20 - 3 July 2004
2674 =============================
2675   More autoconf fixes.
2676   Fix device number handling for 2.6 kernels.
2677
2678 Version 2.00.19 - 29 June 2004
2679 ==============================
2680   Reduce severity of setlocale failure message.
2681   Recognise argv[0] "initrd-lvm" (pld-linux).
2682   Make -O2 configurable.
2683   Added --disable-selinux to configure script.
2684   LD_FLAGS->LDFLAGS & LD_DEPS->LDDEPS in configure script.
2685   Add init_debug to clvmd.
2686
2687 Version 2.00.18 - 24 June 2004
2688 ==============================
2689   Fix vgchange activation.
2690   Add cluster support.
2691
2692 Version 2.00.17 - 20 June 2004
2693 ==============================
2694   configure --enable-fsadm to try out fsadm.  fsadm is not tested yet.
2695   Display all filtered devices, not just PVs, with pvs -a.
2696   Fix sync_dir() when no / in filename
2697   vgcfgbackup -f accepts template with %s for VG name.
2698   Extend hash functions to handle non-null-terminated data.
2699   Add local activation support.
2700   Tidy relative paths in makefile includes.
2701   fsadm support for fsck and resizing - needs testing.
2702   Add read-only GFS pool support.
2703   Add lvm2create_initrd script from http://poochiereds.net/svn/lvm2/
2704   Fix rounding of large diplayed sizes.
2705   Suppress decimal point when using units of sectors/bytes.
2706   Additional kernel target checks before pvmove & snapshot creation.
2707   Add i2o_block.
2708
2709 Version 2.00.16 - 24 May 2004
2710 =============================
2711   Set area_count within alloc_lv_segment.
2712   Remove error labels from lvresize.
2713   Fix a pvs error path.
2714   xxchange -ae for exclusive activation.
2715   Don't return non-zero status if there aren't any volume groups.
2716   Add --alloc argument to tools.
2717   Rename allocation policies to contiguous, normal, anywhere, inherit.
2718   nextfree becomes normal; anywhere isn't implemented yet.
2719   LV inherits allocation policy from VG. Defaults: LV - inherit; VG - normal
2720   Additional status character added to vgs to indicate allocation policy.
2721   Add reset_fn to external_locking.
2722   Ensure presence of virtual targets before attempting activating.
2723   Attempt to fix resizing of snapshot origins.
2724   Restructure lvresize, bringing it closer to lvcreate.
2725   A quick sanity check on vg_disk struct when read in.  More checks needed.
2726   Only include visible LVs in active/open counts.
2727   Add virtual segment types, zero and error.  A large sparse device can be
2728 constructed as a writeable snapshot of a large zero segment.
2729   Add --type to lvcreate/resize.
2730   Push lv_create & alloc policy up to tool level.
2731   Fix pvdisplay return code.
2732   Detect invalid LV names in arg lists.
2733   Reporting uses line-at-a-time output.
2734   lvm2 format sets unlimited_vols format flag.
2735   Internal-only metadata flag support.
2736   Basic checking for presence of device-mapper targets.
2737   Separate out polldaemon.
2738   Revise internal locking semantics.
2739   Move find_pv_by_name to library.
2740   Rename move->copy.
2741   Add devices to segments report.
2742   Begin separating out segment code. There's a lot of change here.
2743   Compress any (obsolete) long LVM1 pvids encountered.
2744   Support for tagged config files.
2745   Don't abort operations if selinux present but disabled.
2746   Fix typo in configure which left HAVE_LIBDL unset.
2747
2748 Version 2.00.15 - 19 Apr 2004
2749 =============================
2750   configure --with-owner= --with-group= to avoid -o and -g args to 'install'
2751
2752 Version 2.00.14 - 16 Apr 2004
2753 =============================
2754   Use 64-bit file functions by default.
2755
2756 Version 2.00.13 - 16 Apr 2004
2757 =============================
2758   Set devices/md_component_detection = 1 to ignore devices containing md
2759   superblocks. [Luca Berra]
2760   Ignore error setting selinux file context if fs doesn't support it.
2761
2762 Version 2.00.12 - 14 Apr 2004
2763 =============================
2764   Install a default lvm.conf into /etc/lvm if there isn't one already.
2765   Allow different installation dir for lvm.static (configure --staticdir=)
2766   Fix inverted selinux error check.
2767   Recognise power2 in /proc/devices.
2768   Fix counting in lvs_in_vg_opened. [It ignored devices open more than once.]
2769
2770 Version 2.00.11 - 8 Apr 2004
2771 ============================
2772   Set fallback_to_lvm1 in lvm.conf (or configure --enable-lvm1_fallback)
2773   to run lvm1 binaries if running a 2.4 kernel without device-mapper.
2774
2775 Version 2.00.10 - 7 Apr 2004
2776 ============================
2777   More fixes for static build.
2778   Add basic selinux support.
2779   Fix sysfs detection.
2780
2781 Version 2.00.09 - 31 Mar 2004
2782 =============================
2783   Update copyright notices for Red Hat.
2784   Fix vgmknodes to remove dud /dev/mapper entries. (libdevmapper update reqd).
2785   Add LVM1-style colon output to vgdisplay.
2786   lvchange --refresh to reload active LVs.
2787   Add string display to memory leak dump.
2788   Add locking flags & memlock option.
2789   Add list_versions to library.
2790   Ignore open hidden LVs when checking if deactivation is OK.
2791   Suppress move percentage when device inactive.
2792   Add lv_info_by_lvid.
2793   Various tidy-ups to the build process.
2794   Rebaseline internal verbose level.
2795   Add --nolocking option for read operations if locking is failing.
2796   Add option to compile into a library.
2797   When compiled without libdevmapper, only print warning message once.
2798   Fix lvreduce PV extent calculations.
2799   Fix DESTDIR to work with configure path overrides.
2800   Always use / as config file separator & rename internal config file variables.
2801   Add support for tagging PV/VG/LVs and hosts.
2802   Fix rare bug in recognition of long cmdline argument forms.
2803   Add basic internationalisation infrastructure.
2804   Don't recurse symlinked dirs such as /dev/fd on 2.6 kernels.
2805   Update autoconf files.
2806   Add sysfs block device filtering for 2.6 kernels.
2807   Update refs for move to sources.redhat.com.
2808
2809 Friday 14th November 2003
2810 =========================
2811 Some bug fixes & minor enhancements, including:
2812   Backwards compatibility with LVM1 metadata improved.
2813   Missing man pages written.
2814   Tool error codes made more consistent.
2815   vgmknodes written.
2816   O_DIRECT can be turned off if it doesn't work in your kernel.
2817   dumpconfig to display the active configuration file
2818
2819 You need to update libdevmapper before using 'vgmknodes' or 'vgscan --mknodes'.
2820 If your root filesystem is on an LV, you should run one of those two
2821 commands to fix up the special files in /dev in your real root filesystem
2822 after finishing with your initrd.  Also, remember you can use
2823 'vgchange --ignorelockingfailure' on your initrd if the tool fails because
2824 it can't write a lock file to a read-only filesystem.
2825
2826 Wednesday 30th April 2003
2827 =========================
2828 A pvmove implementation is now available for the new metadata format.
2829
2830 When running a command that allocates space (e.g. lvcreate), you can now
2831 restrict not only which disk(s) may be used but also the Physical Extents
2832 on those disks.  e.g. lvcreate -L 10 vg1 /dev/hda6:1000-2000:3000-4000
2833
2834
2835 Monday 18th November 2002
2836 ========================
2837
2838 The new format of LVM metadata is ready for you to test!
2839   We expect it to be more efficient and more robust than the original format.
2840   It's more compact and supports transactional changes and replication.
2841   Should things go wrong on a system, it's human-readable (and editable).
2842
2843 Please report any problems you find to the mailing list,
2844 linux-lvm@sistina.com.  The software has NOT yet been thoroughly
2845 tested and so quite possibly there'll still be some bugs in it.
2846 Be aware of the disclaimer in the COPYING file.
2847
2848 While testing, we recommend turning logging on in the configuration file
2849 to provide us with diagnostic information:
2850   log {
2851         file="/tmp/lvm2.log"
2852         level=7
2853         activation=1
2854   }
2855
2856 You should schedule regular backups of your configuration file and
2857 metadata backups and archives (normally kept under /etc/lvm).
2858
2859 Please read docs/example.conf and "man lvm.conf" to find out more about
2860 the configuration file.
2861
2862 To convert an existing volume group called vg1 to the new format using
2863 the default settings, use "vgconvert -M2 vg1".  See "man vgconvert".
2864
2865 -M (or --metadatatype in its long form) is a new flag to indicate which
2866 format of metadata the command should use for anything it creates.
2867 Currently, the valid types are "lvm1" and "lvm2" and they can be
2868 abbreviated to "1" and "2" respectively.  The default value for this
2869 flag can be changed in the global section in the config file.
2870
2871 Backwards-compatible support for the original LVM1 metadata format is
2872 maintained, but it can be moved into a shared library or removed
2873 completely with configure's --with-lvm1 option.
2874
2875 Under LVM2, the basic unit of metadata is the volume group.  Different
2876 volume groups can use different formats of metadata - vg1 could use
2877 the original LVM1 format while vg2 used the new format - but you can't
2878 mix formats within a volume group.  So to add a PV to an LVM2-format
2879 volume group you must run "pvcreate -M2" on it, followed by "vgextend".
2880
2881 With LVM2-format metadata, lvextend will let you specify striping
2882 parameters.  So an LV could consist of two or more "segments" - the
2883 first segment could have 3 stripes while the second segment has just 2.
2884
2885 LVM2 maintains a backup of the current metadata for each volume group
2886 in /etc/lvm/backup, and puts copies of previous versions in
2887 /etc/lvm/archive.  "vgcfgbackup" and "vgcfgrestore" can be used to
2888 create and restore from these files.  If you fully understand what
2889 you're doing, metadata can be changed by editing a copy of a current
2890 backup file and using vgcfgrestore to reload it.
2891
2892 Please read the pvcreate man page for more information on the new
2893 format for metadata.
2894
2895 All tools that can change things have a --test flag which can be used
2896 to check the effect  of a set of cmdline args without really making the
2897 changes.
2898
2899
2900 What's not finished?
2901 ====================
2902 The internal cache.  If you turn on debugging output you'll see lots of
2903 repeated messages, many of which will eventually get optimised out.
2904
2905 --test sometimes causes a command to fail (e.g. vgconvert --test) even
2906 though the real command would work: again, fixing this is waiting for
2907 the work on the cache.
2908
2909 Several of the tools do not yet contain the logic to handle full
2910 recovery: combinations of pvcreate and vgcfgrestore may sometimes be
2911 needed to restore metadata if a tool gets interrupted or crashes or
2912 finds something unexpected.  This applies particularly to tools that
2913 work on more than one volume group at once (e.g. vgsplit).
2914
2915 Display output.  Some metadata information cannot yet be displayed.
2916
2917 Recovery tools to salvage "lost" metadata directly from the disks:
2918 but we hope the new format will mean such tools are hardly ever needed!