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171 lines
3.3 KiB
Bash
Executable File
171 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# $Id: managesnapshot.sh 11542 2010-08-09 03:22:31Z edison $ $HeadURL: svn://svn.lab.vmops.com/repos/vmdev/java/scripts/storage/qcow2/managesnapshot.sh $
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# managesnapshot.sh -- manage snapshots for a single disk (create, destroy, rollback)
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#
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usage() {
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printf "Usage: %s: -c <path to disk> -n <snapshot name>\n" $(basename $0) >&2
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printf "Usage: %s: -d <path to disk> -n <snapshot name>\n" $(basename $0) >&2
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printf "Usage: %s: -r <path to disk> -n <snapshot name>\n" $(basename $0) >&2
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printf "Usage: %s: -b <path to disk> -n <snapshot name> -p <dest name>\n" $(basename $0) >&2
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exit 2
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}
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create_snapshot() {
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local disk=$1
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local snapshotname=$2
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local failed=0
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if [ ! -f $disk ]
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then
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failed=1
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printf "No disk $disk exist\n" >&2
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return $failed
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fi
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cloud-qemu-img snapshot -c $snapshotname $disk
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if [ $? -gt 0 ]
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then
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failed=2
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printf "***Failed to create snapshot $snapshotname for path $disk\n" >&2
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cloud-qemu-img snapshot -d $snapshotname $disk
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if [ $? -gt 0 ]
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then
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printf "***Failed to delete snapshot $snapshotname for path $disk\n" >&2
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fi
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fi
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return $failed
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}
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destroy_snapshot() {
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local disk=$1
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local snapshotname=$2
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local failed=0
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if [ ! -f $disk ]
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then
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failed=1
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printf "No disk $disk exist\n" >&2
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return $failed
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fi
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cloud-qemu-img snapshot -d $snapshotname $disk
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if [ $? -gt 0 ]
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then
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failed=2
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printf "Failed to delete snapshot $snapshotname for path $disk\n" >&2
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fi
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return $failed
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}
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rollback_snapshot() {
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local disk=$1
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local snapshotname=$2
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local failed=0
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qemu-img snapshot -a $snapshotname $disk
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if [ $? -gt 0 ]
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then
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printf "***Failed to apply snapshot $snapshotname for path $disk\n" >&2
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failed=1
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fi
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return $failed
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}
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backup_snapshot() {
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local disk=$1
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local snapshotname=$2
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local destPath=$3
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local destName=$4
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if [ ! -d $destPath ]
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then
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mkdir -p $destPath >& /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to create $destPath" >&2
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return 3
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fi
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fi
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# Does the snapshot exist?
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cloud-qemu-img snapshot -l $disk|grep -w "$snapshotname" >& /dev/null
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if [ $? -gt 0 ]
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then
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printf "there is no $snapshotname on disk $disk" >&2
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return 1
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fi
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cloud-qemu-img convert -f qcow2 -O qcow2 -s $snapshotname $disk $destPath/$destName >& /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to backup $snapshotname for disk $disk to $destPath" >&2
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return 2
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fi
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return 0
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}
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#set -x
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cflag=
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dflag=
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rflag=
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bflag=
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nflag=
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pathval=
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snapshot=
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tmplName=
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while getopts 'c:d:r:n:b:p:t:' OPTION
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do
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case $OPTION in
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c) cflag=1
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pathval="$OPTARG"
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;;
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d) dflag=1
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pathval="$OPTARG"
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;;
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r) rflag=1
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pathval="$OPTARG"
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;;
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b) bflag=1
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pathval="$OPTARG"
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;;
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n) nflag=1
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snapshot="$OPTARG"
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;;
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p) destPath="$OPTARG"
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;;
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t) tmplName="$OPTARG"
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;;
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?) usage
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;;
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esac
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done
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if [ "$cflag" == "1" ]
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then
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create_snapshot $pathval $snapshot
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exit $?
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elif [ "$dflag" == "1" ]
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then
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destroy_snapshot $pathval $snapshot
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exit $?
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elif [ "$bflag" == "1" ]
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then
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backup_snapshot $pathval $snapshot $destPath $tmplName
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exit $?
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elif [ "$rflag" == "1" ]
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then
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rollback_snapshot $pathval $snapshot $destPath
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exit $?
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fi
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exit 0
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