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We can temporarily violate max_lv during mirror conversion etc.
(If the operation fails, orphan mirror images are visible to administrator
for manual remove for example. Not that this should ever happen:-)
Force limit only for lvcreate (and vg merge) command.
Patch also adds simple max_lv tests into testsuite
The snapshot segment (snapshotX) is created twice
during the text metadata segment processing.
This can cause temporary violation of max_lv count.
Simplify the code, snapshot segment is properly initialized
in init_snapshot_seg function now and do not need to be replaced
by vg_add_snapshot call.
The vg_add_snapshot() is now usefull only for adding new
snapshot and it shares the same initialization function.
The snapshot name is always generated, name paramater can be
removed from function call.
Add lvs origin_size field.
Fix linux configure --enable-debug to exclude -O2.
Still a few rough edges, but hopefully usable now:
lvcreate -s vg1 -L 100M --virtualoriginsize 1T
The backup() call store metadata from memory.
But in cluster backup() call performs
remote nodes metadata backup and it reads data from disk.
For metadata backup consistency,
patch moves all backup() calls after vg_commit.
(Moreover, some tools already do that this way.)
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:-)
Signed-off-by: Milan Broz <mbroz@redhat.com>
Fix missing VG unlocks in some pvchange error paths.
Add some missing validation of VG names.
Rename validate_vg_name() to validate_new_vg_name().
Change orphan lock to VG_ORPHANS.
Change format1 to use ORPHAN as orphan VG name.
