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thin: fix message processing on thin-pool extension

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When thin-pool had queued some delete message on extension operation
such message has been 'lost' and thin-pool kernel metadata has been
left with a thin volume that no longer existed for lvm2 metadata.
This commit is contained in:
Zdenek Kabelac 2022-03-30 14:16:11 +02:00
parent 86a0a652a9
commit 0937113146
3 changed files with 80 additions and 1 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.03.16 -
====================================
Fix lossing of delete message on thin-pool extension.
Version 2.03.15 - 07th February 2022
====================================

2
lib/metadata/lv_manip.c
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@ -6179,7 +6179,7 @@ int lv_resize(struct logical_volume *lv,
if (lv_is_thin_pool(lock_lv)) {
/* Update lvm pool metadata (drop messages). */
if (!update_pool_lv(lock_lv, 0))
if (!update_pool_lv(lock_lv, 1))
goto_bad;
}

78
test/shell/lvextend-thin-adddel.sh Normal file
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@ -0,0 +1,78 @@
#!/usr/bin/env bash
# Copyright (C) 2022 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Play with thin-pool and thin removal and creation in corner cases
#
SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1
export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
. lib/inittest
aux have_thin 1 0 0 || skip
test -n "$LVM_TEST_THIN_RESTORE_CMD" || LVM_TEST_THIN_RESTORE_CMD=$(which thin_restore) || skip
"$LVM_TEST_THIN_RESTORE_CMD" -V || skip
aux have_thin 1 10 0 || skip
aux prepare_vg 2
lvcreate -V10 -n $lv1 -L10 -T $vg/pool
lvcreate -V10 -n $lv2 $vg/pool
# Forcibly 'error' _tmeta thin-pool metadata device
not dmsetup remove -f $vg-pool_tmeta
# Now try to schedule removal of thin volume id 1
# that will fail with errored meta device
not lvremove -y $vg/$lv1
# Check we have queued 'message'
vgcfgbackup -f out0 $vg
grep "message1" out0
vgchange -an $vg || true
not dmsetup table ${vg}-pool-tpool
# Reactivate thin-pool
vgchange -ay $vg
# Check message is still queued there
vgcfgbackup -f out1 $vg
grep "message1" out1
lvchange -an $vg
lvextend -L+10 $vg/pool
# Messages should be now processed and gone
vgcfgbackup -f out2 $vg
not grep "message1" out2
lvchange -an $vg
lvchange -y -ay $vg/pool_tmeta
# Kernel metadata must not see dev_id 1 either
thin_dump $DM_DEV_DIR/$vg/pool_tmeta | tee meta
not grep 'dev_id="1"' meta
lvremove -ff $vg
lvs -a $vg
vgremove -ff $vg