+
+lsnapshot_create()
+{
+ do_facet mgs "$LCTL snapshot_create -F $FSNAME $*"
+}
+
+lsnapshot_destroy()
+{
+ do_facet mgs "$LCTL snapshot_destroy -F $FSNAME $*"
+}
+
+lsnapshot_modify()
+{
+ do_facet mgs "$LCTL snapshot_modify -F $FSNAME $*"
+}
+
+lsnapshot_list()
+{
+ do_facet mgs "$LCTL snapshot_list -F $FSNAME $*"
+}
+
+lsnapshot_mount()
+{
+ do_facet mgs "$LCTL snapshot_mount -F $FSNAME $*"
+}
+
+lsnapshot_umount()
+{
+ do_facet mgs "$LCTL snapshot_umount -F $FSNAME $*"
+}
+
+lss_err()
+{
+ local msg=$1
+
+ do_facet mgs "cat $LSNAPSHOT_LOG"
+ error $msg
+}
+
+lss_cleanup()
+{
+ echo "Cleaning test environment ..."
+
+ # Every lsnapshot command takes exclusive lock with others,
+ # so can NOT destroy the snapshot during list with 'xargs'.
+ while true; do
+ local ssname=$(lsnapshot_list | grep snapshot_name |
+ grep lss_ | awk '{ print $2 }' | head -n 1)
+ [ -z "$ssname" ] && break
+
+ lsnapshot_destroy -n $ssname -f ||
+ lss_err "Fail to destroy $ssname by force"
+ done
+}
+
+lss_gen_conf_one()
+{
+ local facet=$1
+ local role=$2
+ local idx=$3
+
+ local host=$(facet_active_host $facet)
+ local dir=$(dirname $(facet_vdevice $facet))
+ local pool=$(zpool_name $facet)
+ local lfsname=$(zfs_local_fsname $facet)
+ local label=${FSNAME}-${role}$(printf '%04x' $idx)
+
+ do_facet mgs \
+ "echo '$host - $label zfs:${dir}/${pool}/${lfsname} - -' >> \
+ $LSNAPSHOT_CONF"
+}
+
+lss_gen_conf()
+{
+ do_facet mgs "rm -f $LSNAPSHOT_CONF"
+ echo "Generating $LSNAPSHOT_CONF on MGS ..."
+
+ if ! combined_mgs_mds ; then
+ [ $(facet_fstype mgs) != zfs ] &&
+ skip "Lustre snapshot 1 only works for ZFS backend" &&
+ exit 0
+
+ local host=$(facet_active_host mgs)
+ local dir=$(dirname $(facet_vdevice mgs))
+ local pool=$(zpool_name mgs)
+ local lfsname=$(zfs_local_fsname mgs)
+
+ do_facet mgs \
+ "echo '$host - MGS zfs:${dir}/${pool}/${lfsname} - -' \
+ >> $LSNAPSHOT_CONF" || lss_err "generate lss conf (mgs)"
+ fi
+
+ for num in `seq $MDSCOUNT`; do
+ [ $(facet_fstype mds$num) != zfs ] &&
+ skip "Lustre snapshot 1 only works for ZFS backend" &&
+ exit 0
+
+ lss_gen_conf_one mds$num MDT $((num - 1)) ||
+ lss_err "generate lss conf (mds$num)"
+ done
+
+ for num in `seq $OSTCOUNT`; do
+ [ $(facet_fstype ost$num) != zfs ] &&
+ skip "Lustre snapshot 1 only works for ZFS backend" &&
+ exit 0
+
+ lss_gen_conf_one ost$num OST $((num - 1)) ||
+ lss_err "generate lss conf (ost$num)"
+ done
+
+ do_facet mgs "cat $LSNAPSHOT_CONF"
+}
+
+parse_plain_param()
+{
+ local line=$1
+ local val=$(awk '{print $2}' <<< $line)
+
+ if [[ $line =~ ^"lmm_stripe_count:" ]]; then
+ echo "-c $val"
+ elif [[ $line =~ ^"lmm_stripe_size:" ]]; then
+ echo "-S $val"
+ elif [[ $line =~ ^"lmm_stripe_offset:" ]]; then
+ echo "-i $val"
+ fi
+}
+
+parse_layout_param()
+{
+ local mode=""
+ local val=""
+ local param=""
+
+ while read line; do
+ if [[ -z $mode ]]; then
+ if [[ $line =~ ^"stripe_count:" ]]; then
+ mode="plain_dir"
+ elif [[ $line =~ ^"lmm_stripe_count:" ]]; then
+ mode="plain_file"
+ elif [[ $line =~ ^"lcm_layout_gen:" ]]; then
+ mode="pfl"
+ fi
+ fi
+
+ if [[ $mode = "plain_dir" ]]; then
+ param=$(echo $line |
+ awk '{printf("-c %d -S %d -i %d",$2,$4,$6)}')
+ elif [[ $mode = "plain_file" ]]; then
+ val=$(parse_plain_param "$line")
+ [[ ! -z $val ]] && param="$param $val"
+ elif [[ $mode = "pfl" ]]; then
+ val=$(echo $line | awk '{print $2}')
+ if [[ $line =~ ^"lcme_extent.e_end:" ]]; then
+ if [[ $val = "EOF" ]]; then
+ param="$param -E -1"
+ else
+ param="$param -E $val"
+ fi
+ elif [[ $line =~ ^"stripe_count:" ]]; then
+ # pfl dir
+ val=$(echo $line |
+ awk '{printf("-c %d -S %d -i %d",$2,$4,$6)}')
+ param="$param $val"
+ else
+ #pfl file
+ val=$(parse_plain_param "$line")
+ [[ ! -z $val ]] && param="$param $val"
+ fi
+ fi
+ done
+ echo "$param"
+}
+
+get_layout_param()
+{
+ local param=$($LFS getstripe -d $1 | parse_layout_param)
+ echo "$param"
+}