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Added destroy -F option, umount all depended datasets of BE upon destroy command.

This commit is contained in:
Slawomir Wojciech Wojtczak (vermaden) 2012-06-22 09:15:51 +02:00
parent f8caebcc6c
commit fde3b39006
1 changed files with 54 additions and 33 deletions
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87
beadm
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@ -28,7 +28,8 @@ PATH=${PATH}:/bin:/usr/bin:/sbin:/usr/sbin
if [ $( uname -r | cut -d '.' -f1 ) -lt 8 ] if [ $( uname -r | cut -d '.' -f1 ) -lt 8 ]
then then
echo "ERROR: beadm only works on FreeBSD 8.0 or later" echo "ERROR: beadm works on FreeBSD 8.0 or later"
exit 1
fi fi
__usage() { __usage() {
@ -39,15 +40,15 @@ __usage() {
echo " subcommands:" echo " subcommands:"
echo echo
echo " ${NAME} activate beName" echo " ${NAME} activate beName"
echo " ${NAME} create [-e nonActiveBe | beName@snapshot] beName" echo " ${NAME} create [-e nonActiveBe | -e beName@snapshot] beName"
echo " ${NAME} create beName@snapshot" echo " ${NAME} create beName@snapshot"
echo " ${NAME} destroy beName" echo " ${NAME} destroy [-F] beName | beName@snapshot"
echo " ${NAME} destroy beName@snapshot"
echo " ${NAME} list" echo " ${NAME} list"
echo " ${NAME} rename origBeName newBeName" echo " ${NAME} rename origBeName newBeName"
exit 1 exit 1
} }
# check if BE exists
__be_exist() { # 1=DATASET __be_exist() { # 1=DATASET
if ! zfs list -H -o name ${1} 1> /dev/null 2> /dev/null if ! zfs list -H -o name ${1} 1> /dev/null 2> /dev/null
then then
@ -56,10 +57,12 @@ __be_exist() { # 1=DATASET
fi fi
} }
# check if argument is a snapshot
__be_snapshot() { # 1=DATASET/SNAPSHOT __be_snapshot() { # 1=DATASET/SNAPSHOT
echo "${1}" | grep -q "@" echo "${1}" | grep -q "@"
} }
# create new BE
__be_new() { # 1=SOURCE 2=TARGET __be_new() { # 1=SOURCE 2=TARGET
local SOURCE=$( echo ${1} | cut -d '@' -f 1 ) local SOURCE=$( echo ${1} | cut -d '@' -f 1 )
if __be_snapshot ${1} if __be_snapshot ${1}
@ -132,23 +135,23 @@ BOOTFS=$( zpool list -H -o bootfs ${POOL} )
case ${1} in case ${1} in
(list) # -------------------------------------------------------------------- (list) # --------------------------------------------------------------------
POOL_PREFIX="${POOL}/ROOT" BENAME_STARTS_WITH="${POOL}/ROOT"
LIST=$( zfs list -o name,used,mountpoint,creation -s creation -H -d 1 -r ${POOL}/ROOT | grep -E "^${POOL}/ROOT/" ) LIST=$( zfs list -o name,used,mountpoint,creation -s creation -H -d 1 -r ${POOL}/ROOT | grep -E "^${POOL}/ROOT/" )
WIDTH_CREATION=$( echo "${LIST}" | awk '{print $5}' | wc -L ) WIDTH_CREATION=$( echo "${LIST}" | awk '{print $5}' | wc -L )
WIDTH_NAME=$( echo "${LIST}" | awk '{print $1}' | wc -L ) WIDTH_NAME=$( echo "${LIST}" | awk '{print $1}' | wc -L )
WIDTH_NAME=$(( ${WIDTH_NAME} - ${#POOL_PREFIX} - 1 )) WIDTH_NAME=$(( ${WIDTH_NAME} - ${#BENAME_STARTS_WITH} - 1 ))
printf "%-${WIDTH_NAME}s %-6s %-10s %5s %6s %s\n" \ printf "%-${WIDTH_NAME}s %-6s %-10s %5s %6s %s\n" \
BE Active Mountpoint Space Policy Created BE Active Mountpoint Space Policy Created
echo "${LIST}" \ echo "${LIST}" \
| while read NAME USED MOUNTPOINT C R E A T | while read NAME USED MOUNTPOINT Y m d H M
do do
NAME=${NAME##*/} NAME=${NAME##*/}
unset ACTIVE unset ACTIVE
if [ "${POOL_PREFIX}/${NAME}" = "${ROOTFS}" ] if [ "${BENAME_STARTS_WITH}/${NAME}" = "${ROOTFS}" ]
then then
ACTIVE="${ACTIVE}N" ACTIVE="${ACTIVE}N"
fi fi
if [ "${POOL_PREFIX}/${NAME}" = "${BOOTFS}" ] if [ "${BENAME_STARTS_WITH}/${NAME}" = "${BOOTFS}" ]
then then
ACTIVE="${ACTIVE}R" ACTIVE="${ACTIVE}R"
fi fi
@ -162,7 +165,7 @@ case ${1} in
(*) MOUNT="-" ;; (*) MOUNT="-" ;;
esac esac
printf "%-10s %5s %-6s " ${MOUNT} ${USED} "static" printf "%-10s %5s %-6s " ${MOUNT} ${USED} "static"
date -j -f "%a %b %d %H:%M %Y" "${C} ${R} ${E} ${A} ${T}" +"%Y-%m-%d %H:%M" date -j -f "%a %b %d %H:%M %Y" "${Y} ${m} ${d} ${H} ${M}" +"%Y-%m-%d %H:%M"
done done
;; ;;
@ -174,7 +177,7 @@ case ${1} in
__usage __usage
fi fi
__be_exist ${POOL}/ROOT/${3} __be_exist ${POOL}/ROOT/${3}
if zfs list -H -o name ${POOL}/ROOT/${4} 2> /dev/null if zfs list -H -o name ${POOL}/ROOT/${4} 1> /dev/null 2> /dev/null
then then
echo "ERROR: Boot environment '${4}' already exists" echo "ERROR: Boot environment '${4}' already exists"
exit 1 exit 1
@ -184,9 +187,9 @@ case ${1} in
(2) (2)
if __be_snapshot ${2} if __be_snapshot ${2}
then then
if ! zfs snapshot -r ${POOL}/ROOT/${2} 2> /dev/null if ! zfs snapshot -r ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null
then then
echo "ERROR: Cannot create '${2}' snapshot" echo "ERROR: Cannot create '${2}' recursive snapshot"
exit 1 exit 1
fi fi
echo "Created successfully" echo "Created successfully"
@ -237,7 +240,7 @@ EOF
else else
TMPMNT=${MOUNT} TMPMNT=${MOUNT}
fi fi
cp /boot/zfs/zpool.cache ${TMPMNT}/boot/zfs/zpool.cache # 2> /dev/null cp /boot/zfs/zpool.cache ${TMPMNT}/boot/zfs/zpool.cache
LOADER_CONFIGS=${TMPMNT}/boot/loader.conf LOADER_CONFIGS=${TMPMNT}/boot/loader.conf
if [ -f ${TMPMNT}/boot/loader.conf.local ] if [ -f ${TMPMNT}/boot/loader.conf.local ]
then then
@ -250,24 +253,24 @@ EOF
zfs set mountpoint=legacy ${POOL}/ROOT/${2} zfs set mountpoint=legacy ${POOL}/ROOT/${2}
fi fi
fi fi
if ! zpool set bootfs=${POOL}/ROOT/${2} ${POOL} if ! zpool set bootfs=${POOL}/ROOT/${2} ${POOL} 2> /dev/null
then then
echo "ERROR: Failed to activate '${POOL}/ROOT/${2}'" echo "ERROR: Failed to activate '${POOL}/ROOT/${2}'"
exit 1 exit 1
fi fi
fi fi
# Disable mounting on all inactive datasets # disable automatic mount on all inactive datasets
zfs list -H -o name -r ${POOL}/ROOT \ zfs list -H -o name -r ${POOL}/ROOT \
| grep -v "${POOL}/ROOT/${2}" \ | grep -v "${POOL}/ROOT/${2}" \
| while read I | while read I
do do
zfs set canmount=noauto ${I} zfs set canmount=noauto ${I}
done done
# Enable mounting for the active BE and promote it # enable automatic mount for active BE and promote it
zfs list -H -o name,origin -t filesystem -r ${POOL}/ROOT/${2} \ zfs list -H -o name,origin -t filesystem -r ${POOL}/ROOT/${2} \
| while read I ORIGIN | while read I ORIGIN
do do
zfs set canmount=on ${I} 2> /dev/null zfs set canmount=on ${I}
if [ ${ORIGIN} != "-" ] if [ ${ORIGIN} != "-" ]
then then
zfs promote ${I} zfs promote ${I}
@ -277,33 +280,51 @@ EOF
;; ;;
(destroy) # ----------------------------------------------------------------- (destroy) # -----------------------------------------------------------------
if [ ${#} -ne 2 ] case ${#} in
then (2)
__usage echo "Are you sure you want to destroy '${2}'?"
fi echo -n "This action cannot be undone (y/[n]): "
__be_exist ${POOL}/ROOT/${2} read CHOICE
if [ "${BOOTFS}" = "${POOL}/ROOT/${2}" ] DESTROY=${2}
;;
(3)
if [ "${2}" != "-F" ]
then
__usage
fi
CHOICE=Y
DESTROY=${3}
;;
(*)
__usage
;;
esac
__be_exist ${POOL}/ROOT/${DESTROY}
if [ "${BOOTFS}" = "${POOL}/ROOT/${DESTROY}" ]
then then
echo "ERROR: '${POOL}/ROOT/${2}' is current active boot environment" echo "ERROR: '${POOL}/ROOT/${2}' is current active boot environment"
exit 1 exit 1
fi fi
echo "Are you sure you want to destroy '${2}'?"
echo -n "This action cannot be undone (y/[n]): "
read CHOICE
case ${CHOICE} in case ${CHOICE} in
(Y|y|[Yy][Ee][Ss]) (Y|y|[Yy][Ee][Ss])
if __be_snapshot ${POOL}/ROOT/${2} if __be_snapshot ${POOL}/ROOT/${DESTROY}
then then
if ! zfs destroy -r ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null if ! zfs destroy -r ${POOL}/ROOT/${DESTROY} 1> /dev/null 2> /dev/null
then then
echo "ERROR: Snapshot '${2}' is origin for other boot environment(s)" echo "ERROR: Snapshot '${2}' is origin for other boot environment(s)"
exit 1 exit 1
fi fi
else else
ORIGINS=$( zfs list -r -H -o origin ${POOL}/ROOT/${2} ) zfs list -r -H -o name ${POOL}/ROOT/${DESTROY} \
if ! zfs destroy ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null | sort -n -r \
| while read DATASET
do
zfs umount ${DATASET} 1> /dev/null 2> /dev/null || true
done
ORIGINS=$( zfs list -r -H -o origin ${POOL}/ROOT/${DESTROY} )
if ! zfs destroy ${POOL}/ROOT/${DESTROY} 1> /dev/null 2> /dev/null
then then
zfs destroy -r ${POOL}/ROOT/${2} 2>&1 \ zfs destroy -r ${POOL}/ROOT/${DESTROY} 2>&1 \
| grep "${POOL}/ROOT/" \ | grep "${POOL}/ROOT/" \
| grep -v "@" \ | grep -v "@" \
| while read I | while read I
@ -323,7 +344,7 @@ EOF
echo "Destroyed successfully" echo "Destroyed successfully"
;; ;;
(*) (*)
echo "'${2}' has not been destroyed" echo "'${DESTROY}' has not been destroyed"
;; ;;
esac esac
;; ;;