552 lines
18 KiB
Bash
Executable File
552 lines
18 KiB
Bash
Executable File
#!/bin/sh -e
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# Copyright (c) 2012 Slawomir Wojciech Wojtczak (vermaden). All rights reserved.
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# Copyright (c) 2012 Bryan Drewery (bdrewery). All rights reserved.
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# Copyright (c) 2012 Mike Clarke (rawthey). All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS 'AS IS' AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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unset LC_ALL
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unset LANG
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PATH=${PATH}:/bin:/usr/bin:/sbin:/usr/sbin
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if [ $( uname -r | cut -d '.' -f1 ) -lt 8 ]
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then
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echo "ERROR: beadm works on FreeBSD 8.0 or later"
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exit 1
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fi
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__usage() {
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local NAME=${0##*/}
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echo "usage:"
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echo " ${NAME} activate beName"
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echo " ${NAME} create [-e nonActiveBe] beName"
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echo " ${NAME} create [-e beName@snapshot] beName"
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echo " ${NAME} create beName@snapshot"
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echo " ${NAME} destroy [-F] beName"
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echo " ${NAME} destroy [-F] beName@snapshot"
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echo " ${NAME} list"
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echo " ${NAME} mount"
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echo " ${NAME} mount beName [mountpoint]"
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echo " ${NAME} umount [-f] beName"
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echo " ${NAME} unmount [-f] beName"
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echo " ${NAME} rename origBeName newBeName"
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exit 1
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}
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# check if boot environment exists
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__be_exist() { # 1=DATASET
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if ! zfs list -H -o name ${1} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Boot environment '${1##*/}' does not exist"
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exit 1
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fi
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}
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# check if argument is a snapshot
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__be_snapshot() { # 1=DATASET/SNAPSHOT
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echo "${1}" | grep -q "@" 2> /dev/null
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}
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# check if boot environment is mounted
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__be_mounted() { # 1=BE
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mount 2> /dev/null | grep -q -E "^${1} " 2> /dev/null
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}
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# create new boot environment
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__be_new() { # 1=SOURCE 2=TARGET
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local SOURCE=$( echo ${1} | cut -d '@' -f 1 )
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if __be_snapshot ${1}
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then
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local SNAPSHOT=$( echo ${1} | cut -d '@' -f 2 )
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zfs list -r -H -t filesystem -o name ${SOURCE} \
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| while read FS
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do
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if ! zfs list -H -o name ${FS}@${SNAPSHOT} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Child snapshot '${FS}@${SNAPSHOT}' does not exist"
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exit 1
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fi
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done
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else
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if zfs list -H -o name ${1}@${2##*/} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Snapshot '${1}@${2##*/}' already exists"
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exit 1
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fi
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FMT=$( date "+%Y-%m-%d-%H:%M:%S" )
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if ! zfs snapshot -r ${1}@${FMT} 1> /dev/null 2> /dev/null # 2##*/ > FMT
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then
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echo "ERROR: Cannot create snapshot '${1}@${FMT}'" # 2##*/ > FMT
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exit 1
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fi
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fi
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zfs list -H -o name -r ${SOURCE} \
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| while read FS
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do
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local OPTS=""
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while read NAME PROPERTY VALUE
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do
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local OPTS="-o ${PROPERTY}=${VALUE} ${OPTS}"
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done << EOF
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$( zfs get -o name,property,value -s local,received -H all ${FS} | awk '!/[\t ]canmount[\t ]/' )
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EOF
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DATASET=$( echo ${FS} | awk '{print $1}' | sed -E s/"^${POOL}\/ROOT\/${SOURCE##*/}"/"${POOL}\/ROOT\/${2##*/}"/g )
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if [ "${OPTS}" = "-o = " ]
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then
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local OPTS=""
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fi
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if __be_snapshot ${1}
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then
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zfs clone -o canmount=off ${OPTS} ${FS}@${1##*@} ${DATASET}
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else
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zfs clone -o canmount=off ${OPTS} ${FS}@${FMT} ${DATASET} # 2##*/ > FMT
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fi
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done
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}
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ROOTFS=$( mount | awk '/ \/ / {print $1}' )
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if echo ${ROOTFS} | grep -q -m 1 -E "^/dev/"
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then
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echo "ERROR: This system does not boot from ZFS pool"
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exit 1
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fi
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POOL=$( echo ${ROOTFS} | awk -F '/' '{print $1}' )
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if ! zfs list ${POOL}/ROOT 1> /dev/null 2> /dev/null
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then
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echo "ERROR: This system is not configured for boot environments"
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exit 1
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fi
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BOOTFS=$( zpool list -H -o bootfs ${POOL} )
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case ${1} in
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(list) # --------------------------------------------------------------------
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if [ ${#} -ne 1 ]
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then
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__usage
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fi
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BENAME_STARTS_WITH="${POOL}/ROOT"
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LIST=$( zfs list -o name,mountpoint,creation -s creation -H -d 1 -r ${POOL}/ROOT | grep -E "^${POOL}/ROOT/" )
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WIDTH_CREATION=$( echo "${LIST}" | awk '{print $5}' | wc -L )
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WIDTH_NAME=$( echo "${LIST}" | awk '{print $1}' | wc -L )
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WIDTH_NAME=$(( ${WIDTH_NAME} - ${#BENAME_STARTS_WITH} - 1 ))
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printf "%-${WIDTH_NAME}s %-6s %-10s %6s %6s %s\n" \
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BE Active Mountpoint Space Policy Created
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# shell strips out line breaks from the command output so we add ~ to
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# end of each line for use as a record separator later by AWK. The ~
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# is not a valid character for use in zfs components so it is not
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# likely to cause problems by appearing anywhere else in the output
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USED_ALL=$( zfs list -H -t all -o name,origin,used -r ${POOL}/ROOT \
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| sed 1d \
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| sed '/0$/d;s/K$/ 1/;s/M$/ 1024/;s/G$/ 1048576/;s/T$/ 1073741824/;s/P$/ 1099511627776/;s/E$/ 1125899906842624/;s/Z$/ 1152921504606846976/' \
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| sed 's/$/~/' )
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echo "${LIST}" \
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| while read NAME MOUNTPOINT Y m d H M
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do
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TOTAL=0
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NAME=${NAME##*/}
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ACTIVE=''
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if [ "${BENAME_STARTS_WITH}/${NAME}" = "${ROOTFS}" ]
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then
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ACTIVE="${ACTIVE}N"
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fi
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if [ "${BENAME_STARTS_WITH}/${NAME}" = "${BOOTFS}" ]
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then
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ACTIVE="${ACTIVE}R"
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fi
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if [ -z "${ACTIVE}" ]
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then
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ACTIVE="-"
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fi
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case ${ACTIVE} in
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(N|NR) MOUNT="/" ;;
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(*) MOUNT="-" ;;
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esac
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# get the name of origin snapshot for boot environment
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SNAPSHOT=$( zfs list -H -t all -o name,origin sys/ROOT/${NAME} | awk -F '@' '{print $2}' )
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# calculate space total usage for boot environment
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TOTAL=$( echo ${USED_ALL} \
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| awk -v RS=~ -v match1="^${POOL}\/ROOT\/${NAME}"'(([@/]+.*)|$)' -v match2="@${SNAPSHOT}$" \
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'BEGIN {total=0}
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($1 ~ match1) || ($1 ~ match2) {total += $3 * $4}
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END {
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if (total <= 1024) { unit = "K"; }
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else if (total <= 1048576) { total = total / 1024; unit = "M"; }
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else if (total <= 1073741824) { total = total / 1048576; unit = "G"; }
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else if (total <= 1099511627776) { total = total / 1073741824; unit = "T"; }
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else if (total <= 1125899906842624) { total = total / 1099511627776; unit = "P"; }
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else if (total <= 1152921504606846976) { total = total / 1125899906842624; unit = "E"; }
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else { total = total / 1152921504606846976; unit = "Z"; }
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printf ("%.1f%s",total,unit);
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}' )
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printf "%-${WIDTH_NAME}s %-6s %-10s %6s %-6s " ${NAME} ${ACTIVE} ${MOUNT} ${TOTAL} "static"
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date -j -f "%a %b %d %H:%M %Y" "${Y} ${m} ${d} ${H} ${M}" +"%Y-%m-%d %H:%M"
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done
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;;
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(create) # ------------------------------------------------------------------
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case ${#} in
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(4)
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if ! [ ${2} = "-e" ]
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then
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__usage
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fi
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__be_exist ${POOL}/ROOT/${3}
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if zfs list -H -o name ${POOL}/ROOT/${4} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Boot environment '${4}' already exists"
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exit 1
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fi
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__be_new ${POOL}/ROOT/${3} ${POOL}/ROOT/${4}
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;;
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(2)
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if __be_snapshot ${2}
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then
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if ! zfs snapshot -r ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Cannot create '${2}' recursive snapshot"
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exit 1
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fi
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else
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__be_new ${ROOTFS} ${POOL}/ROOT/${2}
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fi
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;;
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(*)
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__usage
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;;
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esac
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echo "Created successfully"
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;;
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(activate) # ----------------------------------------------------------------
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if [ ${#} -ne 2 ]
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then
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__usage
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fi
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__be_exist ${POOL}/ROOT/${2}
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if [ "${BOOTFS}" = "${POOL}/ROOT/${2}" ]
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then
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echo "Already activated"
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exit 0
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else
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if mount | grep -E "^${POOL}/ROOT/${2} " 1> /dev/null 2> /dev/null
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then
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MNT=$( mount | grep -E "^${POOL}/ROOT/${2} " | awk '{print $3}' )
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if [ "${MNT}" != "/" ]
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then
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echo "ERROR: Boot environment '${2}' is mounted at '${MNT}'"
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echo "ERROR: Cannot activate mounted boot environment"
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exit 1
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fi
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fi
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if [ "${ROOTFS}" != "${POOL}/ROOT/${2}" ]
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then
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TMPMNT="/tmp/BE"
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if ! mkdir -p ${TMPMNT}
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then
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echo "ERROR: Cannot create '${TMPMNT}' directory"
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exit 1
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fi
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MOUNT=0
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while read FS MNT
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do
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if [ "${FS}" = "${POOL}/ROOT/${2}" ]
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then
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MOUNT=${MNT}
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fi
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done << EOF
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$( mount -p | awk '{print $1 " " $2}' )
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EOF
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if [ ${MOUNT} -eq 0 ]
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then
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zfs set canmount=noauto ${POOL}/ROOT/${2}
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zfs set mountpoint=${TMPMNT} ${POOL}/ROOT/${2}
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zfs mount ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null
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else
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TMPMNT=${MOUNT}
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fi
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cp /boot/zfs/zpool.cache ${TMPMNT}/boot/zfs/zpool.cache
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LOADER_CONFIGS=${TMPMNT}/boot/loader.conf
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if [ -f ${TMPMNT}/boot/loader.conf.local ]
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then
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LOADER_CONFIGS="${LOADER_CONFIGS} ${TMPMNT}/boot/loader.conf.local"
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fi
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sed -i '' -E s/"^vfs.root.mountfrom=.*$"/"vfs.root.mountfrom=\"zfs:${POOL}\/ROOT\/${2##*/}\""/g ${LOADER_CONFIGS} 2> /dev/null
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if [ ${MOUNT} -eq 0 ]
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then
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zfs umount ${POOL}/ROOT/${2}
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zfs set mountpoint=legacy ${POOL}/ROOT/${2}
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fi
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fi
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if ! zpool set bootfs=${POOL}/ROOT/${2} ${POOL} 2> /dev/null
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then
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echo "ERROR: Failed to activate '${2}'"
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exit 1
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fi
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fi
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# disable automatic mount on all inactive datasets
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zfs list -H -o name -r ${POOL}/ROOT \
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| grep -v "${POOL}/ROOT/${2}" \
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| while read I
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do
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zfs set canmount=noauto ${I}
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done
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# enable automatic mount for active boot environment and promote it
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zfs list -H -o name,origin -t filesystem -r ${POOL}/ROOT/${2} \
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| while read I ORIGIN
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do
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zfs set canmount=on ${I}
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if [ ${ORIGIN} != "-" ]
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then
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zfs promote ${I}
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fi
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done
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echo "Activated successfully"
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;;
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(destroy) # -----------------------------------------------------------------
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case ${#} in
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(2)
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echo "Are you sure you want to destroy '${2}'?"
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echo -n "This action cannot be undone (y/[n]): "
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read CHOICE
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DESTROY=${2}
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;;
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(3)
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if [ "${2}" != "-F" ]
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then
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__usage
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fi
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CHOICE=Y
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DESTROY=${3}
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;;
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(*)
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__usage
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;;
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esac
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__be_exist ${POOL}/ROOT/${DESTROY}
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if [ "${BOOTFS}" = "${POOL}/ROOT/${DESTROY}" ]
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then
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echo "ERROR: Cannot destroy active boot environment"
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exit 1
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fi
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case ${CHOICE} in
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(Y|y|[Yy][Ee][Ss])
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# delete snapshot or delete boot environment
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if __be_snapshot ${POOL}/ROOT/${DESTROY}
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then
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# destroy desired snapshot
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if ! zfs destroy -r ${POOL}/ROOT/${DESTROY} 1> /dev/null 2> /dev/null
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then
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echo "ERROR: Snapshot '${2}' is origin for other boot environment"
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exit 1
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fi
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else
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# promote clones dependent on snapshots used by destroyed boot environment
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zfs list -H -t all -o name,origin \
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| while read NAME ORIGIN
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do
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if echo "${ORIGIN}" | grep -q -E "${POOL}/ROOT/${DESTROY}(/.*@|@)" 2> /dev/null
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then
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zfs promote ${NAME}
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fi
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done
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# get origins used by destroyed boot environment
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ORIGIN_SNAPSHOTS=$( zfs list -H -t all -o origin -r ${POOL}/ROOT/${DESTROY} | grep -v '^-$' | awk -F "@" '{print $2}' | sort -u )
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# destroy boot environment
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zfs destroy -r ${POOL}/ROOT/${DESTROY}
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# promote datasets dependent on origins used by destroyed boot environment
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ALL_ORIGINS=$( zfs list -H -t all -o name,origin )
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echo "${ORIGIN_SNAPSHOTS}" \
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| while read S
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do
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echo "${ALL_ORIRINS}" \
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| grep "${S}" \
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| awk '{print $1}' \
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| while read I
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do
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zfs promote ${I}
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done
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done
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# destroy origins used by destroyed boot environment
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SNAPSHOTS=$( zfs list -H -t snapshot -o name )
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echo "${ORIGIN_SNAPSHOTS}" \
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| while read S
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do
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echo "${SNAPSHOTS}" \
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| grep "@${S}$" \
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| while read I
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do
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zfs destroy ${I}
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done
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done
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fi
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echo "Destroyed successfully"
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;;
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(*)
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echo "Boot environment '${DESTROY}' has not been destroyed"
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;;
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esac
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;;
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(rename) # ------------------------------------------------------------------
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if [ ${#} -ne 3 ]
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then
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__usage
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fi
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__be_exist ${POOL}/ROOT/${2}
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if [ "${BOOTFS}" = "${POOL}/ROOT/${2}" ]
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then
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echo "ERROR: Renaming active boot environment is not supported"
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exit 1
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fi
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if zfs list -H -o name ${POOL}/ROOT/${3} 2> /dev/null
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then
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echo "ERROR: Boot environment '${3}' already exists"
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exit 1
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fi
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zfs rename ${POOL}/ROOT/${2} ${POOL}/ROOT/${3}
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echo "Renamed successfully"
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;;
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(mount) # -------------------------------------------------------------------
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if [ ${#} -eq 1 ]
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then
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zfs list -H -o name -d 1 -r ${POOL}/ROOT \
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| grep "${POOL}/ROOT/" \
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| while read NAME
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do
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NAME=${NAME##*/}
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if mount | grep -q -E "^${POOL}/ROOT/${NAME}" 2> /dev/null
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then
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echo ${NAME}
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mount \
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| grep -E "^${POOL}/ROOT/${NAME}" \
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| awk '{print $1 " " $3}' \
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| column -t \
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| awk '{print " " $0}'
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echo
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fi
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done
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exit 0
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elif [ ${#} -eq 2 ]
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then
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TARGET=$( mktemp -d /tmp/tmp.XXXXXX )
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elif [ ${#} -eq 3 ]
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then
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TARGET=${3}
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else
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__usage
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fi
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__be_exist "${POOL}/ROOT/${2}"
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if __be_mounted "${POOL}/ROOT/${2}"
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then
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MNT=$( mount | grep -E "^${POOL}/ROOT/${2} " | awk '{print $3}' )
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echo "Boot environment '${2}' is already mounted at '${MNT}'"
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exit 1
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fi
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if ! mkdir -p ${TARGET} 2> /dev/null
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then
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echo "ERROR: Cannot create '${TARGET}' mountpoint"
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exit 1
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fi
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if ! mount -t zfs ${POOL}/ROOT/${2} ${TARGET}
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then
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echo "ERROR: Cannot mount '${2}' at '${TARGET}' mountpoint"
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exit 1
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fi
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PREFIX=$( echo ${POOL}/ROOT/${2}/ | sed 's/\//\\\//g' )
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zfs list -H -o name,mountpoint -r ${POOL}/ROOT/${2} \
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| grep -v "legacy$" \
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| sort -n \
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| grep -E "^${POOL}/ROOT/${2}/" \
|
|
| while read FS MOUNTPOINT
|
|
do
|
|
if [ "{FS}" != "${POOL}/ROOT/${2}" ]
|
|
then
|
|
INHERIT=$( zfs get -H -o source mountpoint ${FS} )
|
|
if [ "${INHERIT}" = "local" ]
|
|
then
|
|
if [ "${MOUNTPOINT}" = "legacy" ]
|
|
then
|
|
continue
|
|
else
|
|
MOUNTPOINT="/$( echo "${FS}" | sed s/"${PREFIX}"//g )"
|
|
fi
|
|
fi
|
|
fi
|
|
if ! mkdir -p ${TARGET}${MOUNTPOINT} 1> /dev/null 2> /dev/null
|
|
then
|
|
echo "ERROR: Cannot create '${TARGET}${MOUNTPOINT}' mountpoint"
|
|
exit 1
|
|
fi
|
|
if ! mount -t zfs ${FS} ${TARGET}${MOUNTPOINT} 1> /dev/null 2> /dev/null
|
|
then
|
|
echo "ERROR: Cannot mount '${FS}' at '${TARGET}${MOUNTPOINT}' mountpoint"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "Mounted successfully on '${TARGET}'"
|
|
;;
|
|
|
|
(umount|unmount) # ----------------------------------------------------------
|
|
if [ ${#} -eq 2 ]
|
|
then
|
|
# we need this empty section for argument checking
|
|
:
|
|
elif [ ${#} -eq 3 -a "${2}" = "-f" ]
|
|
then
|
|
OPTS="-f"
|
|
shift
|
|
else
|
|
__usage
|
|
fi
|
|
__be_exist "${POOL}/ROOT/${2}"
|
|
if ! __be_mounted "${POOL}/ROOT/${2}"
|
|
then
|
|
echo "Boot environment '${2}' is not mounted"
|
|
exit 1
|
|
fi
|
|
mount \
|
|
| grep "^${POOL}/ROOT/${2}" \
|
|
| awk '{print $1}' \
|
|
| sort -n -r \
|
|
| while read FS
|
|
do
|
|
if ! umount ${OPTS} ${FS} 1> /dev/null 2> /dev/null
|
|
then
|
|
echo "ERROR: Cannot umount '${FS}' dataset"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "Unmounted successfully"
|
|
;;
|
|
|
|
(*) # -----------------------------------------------------------------------
|
|
__usage
|
|
;;
|
|
|
|
esac
|