Milan Broz [Fri, 10 Apr 2009 09:56:00 +0000 (09:56 +0000)]
Properly copy the whole pv structure for later use.
The all_pvs list, used in vg_read, should make its own private
copy of pv structures, otherwise (when vg will use its own pool)
it will point to released memory pool.
The same applies for get_pvs() call.
Patch adds pv_list copy helper and adds explicit memory pool
parameter into _copy_pv.
(Please note that all these helper functions cannot guarantee that
vg related fields are valid - proper vg read & lock must be used
if it is requested.)
Milan Broz [Wed, 8 Apr 2009 12:53:20 +0000 (12:53 +0000)]
Enable use of cached metadata for pvs & pvdisplay.
Currently PV commands, which performs full device scan, repeatly
re-reads PVs and scans for all devices.
This behaviour can lead to OOM for large VG.
This patch allows using internal metadata cache for pvs & pvdisplay,
so the commands scan the PVs only once.
(We have to use VG_GLOBAL otherwise cache is invalidated on every
VG unlock in process_single PV call.)
Dave Wysochanski [Mon, 16 Mar 2009 20:00:10 +0000 (20:00 +0000)]
Fix some clean rules, fix previous distclean checkin.
In libdm/Makefile.in, we need to cleanup the symlink properly.
Adding to CLEAN_TARGETS seemed like the simplest way to do this
in the current build framework. We could redo dependencies for
VERSIONED_SHLIB, but for now just add to CLEAN_TARGETS.
For scripts/Makefile.in, we should be adding to DISTCLEAN_TARGETS.
The generic rule in make.tmpl.in takes care of the cleanup.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Author: Takahiro Yasui <tyasui@redhat.com>
Milan Broz [Mon, 16 Mar 2009 14:34:57 +0000 (14:34 +0000)]
Fix lv_count when manipulating with snapshots and max_lv is set.
Patch fixes these problems:
- during the snapshot creation process, it needs create 2 LVs,
one is cow, second becomes snapshot.
If the code fails in vg_add_snapshot, code lvcreate will not remove
LV cow volume.
- if max_lv is set and VG contains snapshot, it can happen that
during the activation lv_count is temporarily increased over the limit
and VG metadata are not properly processed
see https://bugzilla.redhat.com/show_bug.cgi?id=490298
- vgcfgrestore alows restore with max_lv set to lower valuer that actual
LV count. This later leads to situation that max_lv is completely ignored.
- vgck doesn't call vg_validate(). It should at least try:-)
Dave Wysochanski [Tue, 10 Mar 2009 15:38:46 +0000 (15:38 +0000)]
Remove unnecessary includes in lvm_base.c.
We would like to declare our handles pv_t, vg_t, and lv_t in
the external library header lvm.h. However, these are already
defined in metadata-exported.h for the use of some of the
in-progress liblvm APIs. Thus, we cannot both define
them in lvm.h and include metadata-exported.h in the external
library C files. We could use preprocessor tricks (#ifndef)
but for now we just avoid the include.
Zdenek Kabelac [Tue, 24 Feb 2009 15:48:00 +0000 (15:48 +0000)]
Fixed bug where lvresize option -t was not properly passed to fsadm.
Using argv[] list in exec_cmd() to allow more params for external commands.
Fsadm does not allow checking mounted filesystem.
Fsadm no longer accepts 'any other key' as 'no' answer to y/n.
Fsadm improved handling of command line options.
Thomas Woerner [Tue, 24 Feb 2009 13:03:45 +0000 (13:03 +0000)]
Added files lib/lvm.h and lib/lvm_base.c:
New structure lvm (used as an alias to cmd_context), new type definition lvm_t
for the lvm handle. Added functions lvm_create, lvm_destroy and
lvm_reload_config using the new handle.
Modified test/api/test.c:
Use new lvm.h header file and lvm_t handle.
Alasdair Kergon [Sun, 22 Feb 2009 19:00:26 +0000 (19:00 +0000)]
Add --dataalignment to pvcreate to specify alignment of data area. (mbroz)
This patch is not fully tested and leaves some related bugs unfixed.
Intended behaviour of the code now:
pe_start in the lvm2 format PV label header is set only by pvcreate (or
vgconvert -M2) and then preserved in *all* operations thereafter.
In some specialist cases, after the PV is added to a VG, the pe_start
field in the VG metadata may hold a different value and if so, it
overrides the other one for as long as the PV is in such a VG.
Currently, the field storing the size of the data area in the PV label
header always holds 0. As it only has meaning in the context of a
volume group, it is calculated whenever the PV is added to a VG (and can
be derived from extent_size and pe_count in the VG metadata).
Alasdair Kergon [Sun, 22 Feb 2009 16:13:57 +0000 (16:13 +0000)]
Fix interrupt unblocking after vgcreate, for example: drop_cached_metadata()
previously left _vg_lock_count incremented.
Other locks are always held during drop_cached_metadata() so there's no
need to increment+decrement it.
Petr Rockai [Thu, 12 Feb 2009 19:54:45 +0000 (19:54 +0000)]
Re-implement the test harness in C. This lets us pass through signals and
trigger proper test teardown upon harness interrupt or termination. I also
tweaked the output somewhat while I was at it...