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we are running the repair manually. If we don't ignore, then dmeventd
and the manually run repair can collide. (We should still get clean
results in such a case, but it makes it harder to validate the test
results.)
in clvmd, dmevend, man, tests.
Don't include dependency files for clow and cscope.out targets
Improve dependency tracking for dmeventd and liblvm2cmd sources.
This check-in enables the 'mirrored' log type. It can be specified
by using the '--mirrorlog' option as follows:
#> lvcreate -m1 --mirrorlog mirrored -L 5G -n lv vg
I've also included a couple updates to the testsuite. These updates
include tests for the new log type, and some fixes to some of the
*lvconvert* tests.
If user try to vgcreate or vgextend non-existent VG,
these messages appears:
# vgcreate xxx /dev/xxx
Internal error: Volume Group xxx was not unlocked
Device /dev/xxx not found (or ignored by filtering).
Unable to add physical volume '/dev/xxx' to volume group 'xxx'.
Internal error: Attempt to unlock unlocked VG xxx.
(the same with existing VG and non-existing PV & vgextend)
# vgextend vg_test /dev/xxx
...
It is caused because code tries to "refresh" cache if
md filter is switched on using cache destroy.
But we can change filters and rescan even without this
machinery now, just use refresh_filters
(and reset md filter afterwards).
(Patch also discovers cache alias bug in vgsplit test,
fix it by using better filter line.)
Create new substituted variable PTHREAD_LIBS and link this library
only with tools/libs which really needs it - i.e. dmeventd.
Check for libpthread only for builds with clvmd or dmeventd.
Remove variable LIB_PTHREAD
Switch lvconvert's --merge code over to using process_each_lv(). Doing
so adds support for a single 'lvconvert --merge' to start merging
multiple LVs (which includes @tag expansion).
Add 'lvconvert --merge @tag' testing to test/t-snapshot-merge.sh
Adjust man/lvconvert.8.in to reflect these expanded capabilities.
The lvconvert.c implementation requires rereading the VG each iteration
of process_each_lv(). Otherwise a stale VG instance associated with
the LV passed to lvconvert_single_merge() would result in stale VG
metadata being written back out to disk. This overwrote new metadata
that was written when a previous snapshot LV finished merging (via
lvconvert_poll). This is only an issue when merging multiple LVs that
share the same VG (a single VG is typical for most LVM configurations on
system disks).
In the end this new support is very useful for performing a "system
rollback" that requires multiple snapshot LVs be merged to their
respective origin LV.
The yum-utils 'fs-snapshot' plugin tags all snapshot LVs that it creates
with a common 'snapshot_tag' that is unique to the yum transaction.
Rolling back a yum transaction, that created LVM snapshots with the tag
'yum_20100129133223', is as simple as:
lvconvert --merge @yum_20100129133223
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
