74 lines
1.6 KiB
Plaintext
74 lines
1.6 KiB
Plaintext
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#!/bin/sh
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set -e
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SNAP_ID=$1
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SNAP_MOUNTPOINT="$2"
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SNAP_ORIG_PATH="$5"
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remove_overlay() {
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if test -e "$SNAP_ORIG_PATH/.overlay_$SNAP_ID"
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then
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LODEV=`losetup -j "$SNAP_ORIG_PATH/.overlay_$SNAP_ID" | cut -d':' -f1`
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if [ "x$LODEV" != x ]
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then
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losetup -d $LODEV
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fi
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rm "$SNAP_ORIG_PATH/.overlay_$SNAP_ID"
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fi
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}
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if ! test -e $SNAP_MOUNTPOINT
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then
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echo "Snapshot at $SNAP_MOUNTPOINT was already removed"
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[ ! -e "$SNAP_ORIG_PATH/.datto_$SNAP_ID" ] || rm "$SNAP_ORIG_PATH/.datto_$SNAP_ID"
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[ ! -e "${SNAP_MOUNTPOINT}-num" ] || rm "${SNAP_MOUNTPOINT}-num"
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remove_overlay
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exit 0
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fi
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if ! df -T -P | egrep " ${SNAP_MOUNTPOINT}\$" > /dev/null 2>&1
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then
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echo "Snapshot is not mounted. Already removed"
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rm "${SNAP_MOUNTPOINT}-num"
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rmdir "${SNAP_MOUNTPOINT}"
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[ ! -e "$SNAP_ORIG_PATH/.datto_$SNAP_ID" ] || rm "$SNAP_ORIG_PATH/.datto_$SNAP_ID"
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remove_overlay
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exit 0
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fi
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NUM=`cat "${SNAP_MOUNTPOINT}-num"` || true
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if [ "x$NUM" = "x" ]
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then
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echo "Cannot get device number from ${SNAP_MOUNTPOINT}-num"
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exit 1
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fi
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echo "Unmounting /dev/datto$NUM at /mnt/urbackup_snaps/$SNAP_ID..."
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if ! umount /mnt/urbackup_snaps/$SNAP_ID
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then
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lsof | grep /mnt/urbackup_snaps/$SNAP_ID || true
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echo "Unmounting /mnt/urbackup_snaps/$SNAP_ID failed. Retrying in 10s..."
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sleep 10
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umount /mnt/urbackup_snaps/$SNAP_ID
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fi
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rm "${SNAP_MOUNTPOINT}-num"
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rmdir "${SNAP_MOUNTPOINT}"
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echo "Removing devicemapper snapshot..."
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dmsetup remove "wsnap-$SNAP_ID"
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remove_overlay
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echo "Destroying dattobd snapshot /dev/datto$NUM..."
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dbdctl destroy $NUM
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[ ! -e "$SNAP_ORIG_PATH/.datto_$SNAP_ID" ] || rm "$SNAP_ORIG_PATH/.datto_$SNAP_ID"
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exit 0
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