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Commit Graph

9 Commits

Author SHA1 Message Date
Zdenek Kabelac
f00b069236 Testing: remove -q from grep
to avoid any problems with pipe breaking.
2011-03-30 13:39:24 +00:00
Petr Rockai
cde70f94db Substantial rework of the functional test support code. Some new features:
- somewhat neater, more consistent and more readable output
- possible to set any lvm.conf value: aux lvmconf "section/key = value"
- LVM_TEST_NODEBUG to suppress the (lengthy) "## DEBUG" output
- back-substitution on test output ($TESTDIR/$PREFIX -> @TESTDIR@/@PREFIX@)
- support code moved from test/ to test/lib/ --> less clutter
2011-01-05 00:16:18 +00:00
Mike Snitzer
e7773faa8d Require logical volume(s) to be explicitly named for lvconvert --merge. 2010-08-03 20:22:31 +00:00
Mike Snitzer
d5857e6d48 Disallow the direct removal of a merging snapshot.
Allow lv_remove_with_dependencies() to know the top-level LV that was
requested to be removed (otherwise it recurses and we lose context).

A merging snapshot cannot be removed directly but the associated origin
can be.  Disallow removal of a merging snapshot unless the associated
origin is also being removed.
2010-04-23 19:27:10 +00:00
Mike Snitzer
4a76f5c764 When removing a snapshot avoid preloading the origin if the
snapshot-merge target is not active.
2010-04-23 02:57:39 +00:00
Mike Snitzer
7cd66377ef Add additional test to start the snapshot merge (which had just failed
because an FS was mounted -- origin was still open).
2010-04-19 22:44:42 +00:00
Petr Rockai
5e8c230d1f Refactor the test utilities, dropping the legacy test-lib.sh and curtailing
lvm-utils.sh. Clears up lots of unused code, should have little observable
impact (it does change test directory layout slightly).
2010-04-07 14:46:26 +00:00
Mike Snitzer
3e5a54a791 lvconvert --merge @tag support
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>
2010-02-05 22:44:37 +00:00
Mike Snitzer
dac8cee72c add test/t-snapshot-merge.sh to provide coverage of snapshot-merge support 2010-01-19 22:55:00 +00:00