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Since some test may leave devices in suspend mode which would require
carefull order of resume operation - use '-f' to replace them with
error targets
For disable_dev - when 'error' target is used for open count - treat
return code as ok (|| true) to avoid breaking futher test processing.
transient error), stemming from the following sequence of events:
1) devices fail IO, triggering repair
2) dmeventd starts fixing up the mirror
3) during the downconversion, a new metadata version is written
--> the devices come back online here
4) the mirror device suspend/resume is called to update DM tables
5) during the suspend/resume cycle, *pre*-commit metadata is read;
however, since the failed devices are now back online, we get back
inconsistent set of precommit metadata and the whole operation fails
The patch relaxes the check that fails in step 5 above, namely by ignoring
inconsistencies coming from PVs that are marked MISSING.
Patch adds check for stripe not only in direct
LV segment but also in mirror image segment.
This prevents bugs like:
# lvcreate -i2 -l10 -n lv vg_test
# lvconvert -m1 -i1 vg_test/lv
# lvreduce -f -l1 vg_test/lv
WARNING: Reducing active logical volume to 4.00 MiB
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Reducing logical volume lv to 4.00 MiB
Segment extent reduction 9 not divisible by #stripes 2
Logical volume lv successfully resized
# lvremove -f vg_test
Segment extent reduction 1 not divisible by #stripes 2
LV segment lv:0-4294967295 is incorrectly listed as being used by LV lv_mimage_0
Internal error: LV segments corrupted in lv_mimage_0.
We should never remove more extents than requested by user,
so round up to next stripe boundary during lvreduce.
Also this fixes round to zero sized LV bug:
# lvcreate -i2 -I 64k -l10 -n lvs vg_test
# lvreduce -f -l1 vg_test/lvs
Rounding size (1 extents) down to stripe boundary size for segment (0 extents)
WARNING: Reducing active logical volume to 0
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Reducing logical volume lvs to 0
Failed to suspend lvs
This fails on lenny buildslave for some reason.
For now disable the vgimportclone part of the test until proper fix.
Let the first part of the test still run though, which shows pvs working
with duplicate pvs.
Related to rhbz 697959.
This test fails prior to these two commits:
commit af112eb2c9a62c5d794df920218bd3ee291d5b25
Author: Zdenek Kabelac <zkabelac@redhat.com>
Date: Thu Apr 21 13:15:26 2011 +0000
Skip check for NULL before dm_free
dm_free makes this test itself.
commit 91419c3e86bf9666aab2aa631faae1ba73e8d745
Author: Zdenek Kabelac <zkabelac@redhat.com>
Date: Thu Apr 21 13:13:40 2011 +0000
Fix use of released vgname and vgid
Avoid using of already released memory when duplicated MDA is found.
As get_pv_from_vg_by_id() may call lvmcache_label_scan() use the local copy
of the vgname and vgid on the stack as vginfo may dissapear and code was
then accessing garbage in memory.
i.e. pvs /dev/loop0
(when /dev/loop0 and /dev/loop1 has same MDA content)
Invalid read of size 1
at 0x523C986: dm_hash_lookup (hash.c:325)
by 0x440C8C: vginfo_from_vgname (lvmcache.c:399)
by 0x4605C0: _create_vg_text_instance (format-text.c:1882)
by 0x46140D: _text_create_text_instance (format-text.c:2243)
by 0x47EB49: _vg_read (metadata.c:2887)
by 0x47FBD8: vg_read_internal (metadata.c:3231)
by 0x477594: get_pv_from_vg_by_id (metadata.c:344)
by 0x45F07A: _get_pv_if_in_vg (format-text.c:1400)
by 0x45F0B9: _populate_pv_fields (format-text.c:1414)
by 0x45F40F: _text_pv_read (format-text.c:1493)
by 0x480431: _pv_read (metadata.c:3500)
by 0x4802B2: pv_read (metadata.c:3462)
Address 0x652ab80 is 0 bytes inside a block of size 4 free'd
at 0x4C2756E: free (vg_replace_malloc.c:366)
by 0x442277: _free_vginfo (lvmcache.c:963)
by 0x44235E: _drop_vginfo (lvmcache.c:992)
by 0x442B23: _lvmcache_update_vgname (lvmcache.c:1165)
by 0x443449: lvmcache_update_vgname_and_id (lvmcache.c:1358)
by 0x443C07: lvmcache_add (lvmcache.c:1492)
by 0x46588C: _text_read (text_label.c:271)
by 0x466A65: label_read (label.c:289)
by 0x4413FC: lvmcache_label_scan (lvmcache.c:635)
by 0x4605AD: _create_vg_text_instance (format-text.c:1881)
by 0x46140D: _text_create_text_instance (format-text.c:2243)
by 0x47EB49: _vg_read (metadata.c:2887)
Add testing script
lvseg properties for lvm2app, 'devices' and 'seg_pe_ranges'.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
Failure on pipe kills lv command and produces memory stacktrace.
Add 'true' for empty grep/sed to avoid generating stacktrace.
This should help with long time (7min) for this test on Lenny testing maching
(mimage was filler with stacktrace and each word was used as LV name).
This lvconvert is now able to complete operation automatically without question.
So remove 'echo y |' - it's breaking pipe on some bash versions.
i.e.:
+ echo y
./t-lvconvert-mirror-basic.sh: line 104: echo: write error: Broken pipe
while command has completed this operation succesfully
