mirror of
git://sourceware.org/git/lvm2.git
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135 lines
3.9 KiB
Bash
135 lines
3.9 KiB
Bash
#!/bin/sh
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# Copyright (C) 2010 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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set -xv
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which mkfs.ext3 || exit 200
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. lib/test
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lvdev_()
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{
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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="$3"
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test -z "$NUM_EXTRA_SNAPS" && NUM_EXTRA_SNAPS=0
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local BASE_SNAP_LV_NAME=$(snap_lv_name_ $LV_NAME)
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lvcreate -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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# test full merge of a single LV
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setup_merge $vg $lv1
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# now that snapshot LV is created: test if snapshot-merge target is available
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$(dmsetup targets | grep snapshot-merge >/dev/null) || exit 200
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lvs -a
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# make sure lvconvert --merge requires explicit LV listing
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not lvconvert --merge 2>err
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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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lvs -a
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mkdir test_mnt
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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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rm -r test_mnt
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dmsetup 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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dmsetup table ${vg}-${lv1} | grep " snapshot-merge " || dmsetup 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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# "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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lvs -a
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mkdir test_mnt
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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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rm -r test_mnt
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dmsetup 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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lvs -a
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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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lvs -a
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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 | not grep $(snap_lv_name_ $lv1)
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lvs | not grep $(snap_lv_name_ $lv2)
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lvremove -f $vg/$lv1
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lvremove -f $vg/$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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