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f6ded62291
When the merging of snapshot is finished, we need to clean dm table intries for snapshot and -cow device. So for merging snapshot we have to activate_lv plain 'cow' LV and let the table resolver to its work - shortly deactivation_lv() request will follow - in cluster this needs LV lock to be held by clvmd. Also update a test - add small wait - if lvremove is not 'fast enough' and merging process has not been stopped and $lv1 removed in background. Ortherwise the following lvcreate occasionally finds name $lv1 still in use. (in release fix)
129 lines
3.9 KiB
Bash
129 lines
3.9 KiB
Bash
#!/bin/sh
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# Copyright (C) 2010-2012 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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. lib/test
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which mkfs.ext3 || skip
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lvdev_() {
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echo "$DM_DEV_DIR/$1/$2"
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}
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snap_lv_name_() {
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echo ${1}_snap
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}
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setup_merge_() {
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local VG_NAME=$1
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local LV_NAME=$2
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local NUM_EXTRA_SNAPS=${3:-0}
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local BASE_SNAP_LV_NAME=$(snap_lv_name_ $LV_NAME)
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lvcreate -aey -n $LV_NAME -l 50%FREE $VG_NAME
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lvcreate -s -n $BASE_SNAP_LV_NAME -l 20%FREE ${VG_NAME}/${LV_NAME}
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mkfs.ext3 "$(lvdev_ $VG_NAME $LV_NAME)"
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if [ $NUM_EXTRA_SNAPS -gt 0 ]; then
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for i in $(seq 1 $NUM_EXTRA_SNAPS); do
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lvcreate -s -n ${BASE_SNAP_LV_NAME}_${i} -l 20%FREE ${VG_NAME}/${LV_NAME}
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done
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fi
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}
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aux prepare_vg 1 100
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mkdir test_mnt
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# test full merge of a single LV
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setup_merge_ $vg $lv1
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# now that snapshot LV is created: test if snapshot-merge target is available
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aux target_at_least snapshot-merge 1 0 0 || skip
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# make sure lvconvert --merge requires explicit LV listing
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not lvconvert --merge
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lvconvert --merge $vg/$(snap_lv_name_ $lv1)
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lvremove -f $vg/$lv1
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# test that an actively merging snapshot may not be removed
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setup_merge_ $vg $lv1
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lvconvert -i+100 --merge --background $vg/$(snap_lv_name_ $lv1)
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not lvremove -f $vg/$(snap_lv_name_ $lv1)
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lvremove -f $vg/$lv1
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# "onactivate merge" test
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setup_merge_ $vg $lv1
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mount "$(lvdev_ $vg $lv1)" test_mnt
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lvconvert --merge $vg/$(snap_lv_name_ $lv1)
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# -- refresh LV while FS is still mounted (merge must not start),
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# verify 'snapshot-origin' target is still being used
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lvchange --refresh $vg/$lv1
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umount test_mnt
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dm_table $vg-$lv1 | grep " snapshot-origin "
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# -- refresh LV to start merge (now that FS is unmounted),
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# an active merge uses the 'snapshot-merge' target
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lvchange --refresh $vg/$lv1
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# check whether it's still merging - or maybe got already merged (slow test)
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dm_table $vg-$lv1 | grep " snapshot-merge " || dm_table $vg-$lv1 | grep " linear "
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# -- don't care if merge is still active; lvremove at this point
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# may test stopping an active merge
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lvremove -f $vg/$lv1
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# wait a while if the merge and remove is still not finished
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# since it may still keep $lv1 in vg being present
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for i in 1 2 3 4 ; do
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lvs $vg/$lv1 2>/dev/null || break;
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sleep .2
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done
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# "onactivate merge" test
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# -- deactivate/remove after disallowed merge attempt, tests
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# to make sure preload of origin's metadata is _not_ performed
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setup_merge_ $vg $lv1
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mount "$(lvdev_ $vg $lv1)" test_mnt
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lvconvert --merge $vg/$(snap_lv_name_ $lv1)
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# -- refresh LV while FS is still mounted (merge must not start),
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# verify 'snapshot-origin' target is still being used
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lvchange --refresh $vg/$lv1
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umount test_mnt
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dm_table $vg-$lv1 | grep " snapshot-origin " >/dev/null
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lvremove -f $vg/$lv1
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# test multiple snapshot merge; tests copy out that is driven by merge
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setup_merge_ $vg $lv1 1
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lvconvert --merge $vg/$(snap_lv_name_ $lv1)
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lvremove -f $vg/$lv1
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# test merging multiple snapshots that share the same tag
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setup_merge_ $vg $lv1
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setup_merge_ $vg $lv2
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lvchange --addtag this_is_a_test $vg/$(snap_lv_name_ $lv1)
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lvchange --addtag this_is_a_test $vg/$(snap_lv_name_ $lv2)
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lvconvert --merge @this_is_a_test
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lvs $vg | tee out
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not grep $(snap_lv_name_ $lv1) out
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not grep $(snap_lv_name_ $lv2) out
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lvremove -f $vg/$lv1 $vg/$lv2
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# FIXME following tests would need to poll merge progress, via periodic lvs?
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# Background processes don't lend themselves to lvm testsuite...
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# test: onactivate merge of a single lv
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# test: do onactivate, deactivate the origin LV, reactivate the LV, merge should resume
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# test: multiple onactivate merge
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vgremove -f $vg
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