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git://sourceware.org/git/lvm2.git
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56 lines
1.6 KiB
Bash
56 lines
1.6 KiB
Bash
#!/bin/bash
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# Copyright (C) 2010-2015 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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# no automatic extensions please
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. lib/inittest
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test -e LOCAL_LVMPOLLD && skip
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which mkfs.ext2 || skip
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aux lvmconf "activation/snapshot_autoextend_percent = 0" \
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"activation/snapshot_autoextend_threshold = 100"
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aux prepare_dmeventd
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aux prepare_vg 2
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mntdir="${PREFIX}mnt"
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lvcreate -aey -L8 -n base $vg
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mkfs.ext2 "$DM_DEV_DIR/$vg/base"
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lvcreate -s -L4 -n snap $vg/base
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lvchange --monitor y $vg/snap
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mkdir "$mntdir"
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# Use remount-ro to avoid logging kernel WARNING
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mount -o errors=remount-ro "$DM_DEV_DIR/mapper/$vg-snap" "$mntdir"
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test $(dmsetup info -c --noheadings -o open $vg-snap) -eq 1
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cat /proc/mounts | grep "$mntdir"
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# overfill 4M snapshot (with metadata)
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not dd if=/dev/zero of="$mntdir/file$1" bs=1M count=4 conv=fdatasync
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# Should be nearly instant check of dmeventd for invalid snapshot.
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# Wait here for umount and open_count drops to 0 as it may
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# take a while to finalize umount operation (it might be already
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# removed from /proc/mounts, but still opened).
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for i in {1..100}; do
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sleep .1
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test $(dmsetup info -c --noheadings -o open $vg-snap) -eq 0 && break
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done
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cat /proc/mounts | not grep "$mntdir"
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vgremove -f $vg
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