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f2878a801c
Performance with direct I/O here is noticable better, so use it instead of buffered write whenever we can.
50 lines
1.4 KiB
Bash
50 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2019 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Exercise merge of old snapshots over thin
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export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
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. lib/inittest
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aux target_at_least dm-snapshot-merge 1 0 0 || skip
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aux have_thin 1 0 0 || skip
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aux prepare_vg 2
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lvcreate -T -L1 -V1 -n $lv1 $vg/pool "$dev1"
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lvcreate -s -n $lv2 -L2 $vg/$lv1 "$dev2"
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dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=1M count=1 oflag=direct
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# Initiate background merge
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lvconvert -b --merge $vg/$lv2
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# Query status of snapshot immediatelly after start
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# - may hit race of checking already in-progress merge
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lvs -a -o+lv_merging,lv_merge_failed $vg
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sleep 1
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# Here should be everything already merged
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lvs -a -o+lv_merging,lv_merge_failed $vg
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# -real must not exist for $vg/$lv1
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not dmsetup info ${vg}-${lv1}-real 2>&1 | tee out
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grep "not exist" out
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not dmsetup info ${vg}-${lv2}-cow 2>&1 | tee out
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grep "not exist" out
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check lv_not_exists $vg $lv2
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vgremove -f $vg
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