WHATS_NEW

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