436 lines
13 KiB
Bash
Executable File
436 lines
13 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# "THE BEER-WARE LICENSE":
|
|
# <graudeejs@yandex.com> wrote this file. As long as you retain this notice you
|
|
# can do whatever you want with this stuff. If we meet some day, and you think
|
|
# this stuff is worth it, you can buy me a beer in return. Aldis Berjoza
|
|
|
|
# wiki: https://github.com/graudeejs/zfSnap/wiki
|
|
# repository: https://github.com/graudeejs/zfSnap
|
|
# Bug tracking: https://github.com/graudeejs/zfSnap/issues
|
|
|
|
readonly VERSION=1.11.1
|
|
|
|
ESED='sed -E'
|
|
zfs_cmd='/sbin/zfs'
|
|
zpool_cmd='/sbin/zpool'
|
|
|
|
|
|
note() {
|
|
echo "NOTE: $*" > /dev/stderr
|
|
}
|
|
|
|
err() {
|
|
echo "ERROR: $*" > /dev/stderr
|
|
}
|
|
|
|
fatal() {
|
|
echo "FATAL: $*" > /dev/stderr
|
|
exit 1
|
|
}
|
|
|
|
warn() {
|
|
echo "WARNING: $*" > /dev/stderr
|
|
}
|
|
|
|
|
|
OS=`uname`
|
|
case $OS in
|
|
'FreeBSD')
|
|
;;
|
|
'SunOS')
|
|
ESED='sed -r'
|
|
if [ -d "/usr/gnu/bin" ]; then
|
|
export PATH="/usr/gnu/bin:$PATH"
|
|
else
|
|
fatal "GNU bin direcotry not found"
|
|
fi
|
|
;;
|
|
'Linux'|'GNU/kFreeBSD')
|
|
ESED='sed -r'
|
|
;;
|
|
'Darwin')
|
|
zfs_cmd='/usr/sbin/zfs'
|
|
zpool_cmd='/usr/sbin/zpool'
|
|
;;
|
|
*)
|
|
fatal "Your OS isn't supported"
|
|
;;
|
|
esac
|
|
|
|
|
|
is_true() {
|
|
case "$1" in
|
|
[Tt][Rr][Uu][Ee])
|
|
return 0
|
|
;;
|
|
[Ff][Aa][Ll][Ss][Ee])
|
|
return 1
|
|
;;
|
|
*)
|
|
fatal "must be yes or no"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
is_false() {
|
|
is_true $1 && return 1 || return 0
|
|
}
|
|
|
|
s2time() {
|
|
# convert seconds to human readable time
|
|
xtime=$1
|
|
|
|
years=$(($xtime / 31536000))
|
|
xtime=$(($xtime % 31536000))
|
|
[ ${years:-0} -gt 0 ] && years="${years}y" || years=""
|
|
|
|
months=$(($xtime / 2592000))
|
|
xtime=$(($xtime % 2592000))
|
|
[ ${months:-0} -gt 0 ] && months="${months}m" || months=""
|
|
|
|
days=$(($xtime / 86400))
|
|
xtime=$(($xtime % 86400))
|
|
[ ${days:-0} -gt 0 ] && days="${days}d" || days=""
|
|
|
|
hours=$(($xtime / 3600))
|
|
xtime=$(($xtime % 3600))
|
|
[ ${hours:-0} -gt 0 ] && hours="${hours}h" || hours=""
|
|
|
|
minutes=$(($xtime / 60))
|
|
[ ${minutes:-0} -gt 0 ] && minutes="${minutes}M" || minutes=""
|
|
|
|
seconds=$(($xtime % 60))
|
|
[ ${seconds:-0} -gt 0 ] && seconds="${seconds}s" || seconds=""
|
|
|
|
echo "${years}${months}${days}${hours}${minutes}${seconds}"
|
|
}
|
|
|
|
time2s() {
|
|
# convert human readable time to seconds
|
|
echo "$1" | sed -e 's/y/*31536000+/g; s/m/*2592000+/g; s/w/*604800+/g; s/d/*86400+/g; s/h/*3600+/g; s/M/*60+/g; s/s//g; s/\+$//' | bc -l
|
|
}
|
|
|
|
date2timestamp() {
|
|
date_normal="`echo $1 | $ESED -e 's/\./:/g; s/(20[0-9][0-9]-[01][0-9]-[0-3][0-9])_([0-2][0-9]:[0-5][0-9]:[0-5][0-9])/\1 \2/'`"
|
|
|
|
case $OS in
|
|
'FreeBSD' | 'Darwin' )
|
|
date -j -f '%Y-%m-%d %H:%M:%S' "$date_normal" '+%s'
|
|
;;
|
|
*)
|
|
date --date "$date_normal" '+%s'
|
|
;;
|
|
esac
|
|
}
|
|
|
|
help() {
|
|
cat << EOF
|
|
${0##*/} v${VERSION} by Aldis Berjoza
|
|
|
|
Syntax:
|
|
${0##*/} [ generic options ] [ options ] zpool/filesystem ...
|
|
|
|
GENERIC OPTIONS:
|
|
-d = Delete old snapshots
|
|
-e = Return number of failed actions as exit code.
|
|
-F age = Force delete all snapshots exceeding age
|
|
-n = Only show actions that would be performed
|
|
-s = Don't do anything on pools running resilver
|
|
-S = Don't do anything on pools running scrub
|
|
-v = Verbose output
|
|
-z = Force new snapshots to have 00 seconds!
|
|
-zpool28fix = Workaround for zpool v28 zfs destroy -r bug
|
|
|
|
OPTIONS:
|
|
-a ttl = Set how long snapshot should be kept
|
|
-D pool/fs = Delete all zfSnap snapshots of specific pool/fs (ignore ttl)
|
|
-p prefix = Use prefix for snapshots after this switch
|
|
-P = Don't use prefix for snapshots after this switch
|
|
-r = Create recursive snapshots for all zfs file systems that
|
|
fallow this switch
|
|
-R = Create non-recursive snapshots for all zfs file systems that
|
|
fallow this switch
|
|
|
|
LINKS:
|
|
wiki: https://github.com/graudeejs/zfSnap/wiki
|
|
repository: https://github.com/graudeejs/zfSnap
|
|
Bug tracking: https://github.com/graudeejs/zfSnap/issues
|
|
|
|
EOF
|
|
exit 0
|
|
}
|
|
|
|
rm_zfs_snapshot() {
|
|
if is_true $zpool28fix && [ "$1" = '-r' ]; then
|
|
# get rid of '-r' parameter
|
|
rm_zfs_snapshot $2
|
|
return
|
|
fi
|
|
|
|
if [ "$1" = '-r' ]; then
|
|
skip_pool $2 || return 1
|
|
else
|
|
skip_pool $1 || return 1
|
|
fi
|
|
|
|
zfs_destroy="$zfs_cmd destroy $*"
|
|
|
|
# hardening: make really, really sure we are deleting snapshot
|
|
if echo $i | grep -q -e '@'; then
|
|
if is_false $dry_run; then
|
|
if $zfs_destroy > /dev/stderr; then
|
|
is_true $verbose && echo "$zfs_destroy ... DONE"
|
|
else
|
|
is_true $verbose && echo "$zfs_destroy ... FAIL"
|
|
is_true $count_failures && failures=$(($failures + 1))
|
|
fi
|
|
else
|
|
echo "$zfs_destroy"
|
|
fi
|
|
else
|
|
echo "FATAL: trying to delete zfs pool or filesystem? WTF?" > /dev/stderr
|
|
echo " This is bug, we definitely don't want that." > /dev/stderr
|
|
echo " Please report it to https://github.com/graudeejs/zfSnap/issues" > /dev/stderr
|
|
echo " Don't panic, nothing was deleted :)" > /dev/stderr
|
|
is_true $count_failures && [ $failures -gt 0 ] && exit $failures
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
skip_pool() {
|
|
# more like skip pool???
|
|
if is_true $scrub_skip; then
|
|
for i in $scrub_pools; do
|
|
if [ `echo $1 | sed -e 's#/.*$##; s/@.*//'` = $i ]; then
|
|
is_true $verbose && note "No action will be performed on '$1'. Scrub is running on pool."
|
|
return 1
|
|
fi
|
|
done
|
|
fi
|
|
if is_true $resilver_skip; then
|
|
for i in $resilver_pools; do
|
|
if [ `echo $1 | sed -e 's#/.*$##; s/@.*//'` = $i ]; then
|
|
is_true $verbose && note "No action will be performed on '$1'. Resilver is running on pool."
|
|
return 1
|
|
fi
|
|
done
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
|
|
[ $# = 0 ] && help
|
|
[ "$1" = '-h' -o $1 = "--help" ] && help
|
|
|
|
ttl='1m' # default snapshot ttl
|
|
force_delete_snapshots_age=-1 # Delete snapshots older than x seconds. -1 means NO
|
|
delete_snapshots="false" # Delete old snapshots?
|
|
verbose="false" # Verbose output?
|
|
dry_run="false" # Dry run?
|
|
prefx="" # Default prefix
|
|
prefxes="" # List of prefixes
|
|
delete_specific_fs_snapshots="" # List of specific snapshots to delete
|
|
delete_specific_fs_snapshots_recursively="" # List of specific snapshots to delete recursively
|
|
zero_seconds="false" # Should new snapshots always have 00 seconds?
|
|
scrub_pools="" # List of pools that are in precess of scrubing
|
|
resilver_pools="" # List of pools that are in process of resilvering
|
|
pools="" # List of pools
|
|
get_pools="false" # Should I get list of pools?
|
|
resilver_skip="false" # Should I skip processing pools in process of resilvering.
|
|
scrub_skip="false" # Should I skip processing pools in process of scrubing.
|
|
failures=0 # Number of failed actions.
|
|
count_failures="false" # Should I coundt failed actions?
|
|
zpool28fix="false" # Workaround for zpool v28 zfs destroy -r bug
|
|
|
|
while [ "$1" = '-d' -o "$1" = '-v' -o "$1" = '-n' -o "$1" = '-F' -o "$1" = '-z' -o "$1" = '-s' -o "$1" = '-S' -o "$1" = '-e' -o "$1" = '-zpool28fix' ]; do
|
|
case "$1" in
|
|
'-d')
|
|
delete_snapshots="true"
|
|
shift
|
|
;;
|
|
|
|
'-v')
|
|
verbose="true"
|
|
shift
|
|
;;
|
|
|
|
'-n')
|
|
dry_run="true"
|
|
shift
|
|
;;
|
|
|
|
'-F')
|
|
force_delete_snapshots_age=`time2s $2`
|
|
shift 2
|
|
;;
|
|
|
|
'-z')
|
|
zero_seconds="true"
|
|
shift
|
|
;;
|
|
|
|
'-s')
|
|
get_pools="true"
|
|
resilver_skip="true"
|
|
shift
|
|
;;
|
|
|
|
'-S')
|
|
get_pools="true"
|
|
scrub_skip="true"
|
|
shift
|
|
;;
|
|
|
|
'-e')
|
|
count_failures="true"
|
|
shift
|
|
;;
|
|
|
|
'-zpool28fix')
|
|
zpool28fix="true"
|
|
shift
|
|
;;
|
|
|
|
esac
|
|
done
|
|
|
|
if is_true $get_pools; then
|
|
pools=`$zpool_cmd list -H -o name`
|
|
for i in $pools; do
|
|
if is_true $resilver_skip; then
|
|
$zpool_cmd status $i | grep -q -e 'resilver in progress' && resilver_pools="$resilver_pools $i"
|
|
fi
|
|
if is_true $scrub_skip; then
|
|
$zpool_cmd status $i | grep -q -e 'scrub in progress' && scrub_pools="$scrub_pools $i"
|
|
fi
|
|
done
|
|
fi
|
|
|
|
readonly date_pattern='20[0-9][0-9]-[01][0-9]-[0-3][0-9]_[0-2][0-9]\.[0-5][0-9]\.[0-5][0-9]'
|
|
if is_false $zero_seconds; then
|
|
readonly tfrmt='%Y-%m-%d_%H.%M.%S'
|
|
else
|
|
readonly tfrmt='%Y-%m-%d_%H.%M.00'
|
|
fi
|
|
|
|
readonly htime_pattern='([0-9]+y)?([0-9]+m)?([0-9]+w)?([0-9]+d)?([0-9]+h)?([0-9]+M)?([0-9]+[s]?)?'
|
|
|
|
|
|
is_true $dry_run && zfs_list=`$zfs_cmd list -H -o name`
|
|
ntime=`date "+$tfrmt"`
|
|
while [ "$1" ]; do
|
|
while [ "$1" = '-r' -o "$1" = '-R' -o "$1" = '-a' -o "$1" = '-p' -o "$1" = '-P' -o "$1" = '-D' ]; do
|
|
case "$1" in
|
|
'-r')
|
|
zopt='-r'
|
|
shift
|
|
;;
|
|
'-R')
|
|
zopt=''
|
|
shift
|
|
;;
|
|
'-a')
|
|
ttl="$2"
|
|
echo "$ttl" | grep -q -E -e "^[0-9]+$" && ttl=`s2time $ttl`
|
|
shift 2
|
|
;;
|
|
'-p')
|
|
prefx="$2"
|
|
prefxes="$prefxes|$prefx"
|
|
shift 2
|
|
;;
|
|
'-P')
|
|
prefx=""
|
|
shift
|
|
;;
|
|
'-D')
|
|
if [ "$zopt" != '-r' ]; then
|
|
delete_specific_fs_snapshots="$delete_specific_fs_snapshots $2"
|
|
else
|
|
delete_specific_fs_snapshots_recursively="$delete_specific_fs_snapshots_recursively $2"
|
|
fi
|
|
shift 2
|
|
;;
|
|
|
|
esac
|
|
done
|
|
|
|
# create snapshots
|
|
if [ $1 ]; then
|
|
if skip_pool $1; then
|
|
if [ $1 = `echo $1 | $ESED -e 's/^-//'` ]; then
|
|
zfs_snapshot="$zfs_cmd snapshot $zopt $1@${prefx}${ntime}--${ttl}${postfx}"
|
|
if is_false $dry_run; then
|
|
if $zfs_snapshot > /dev/stderr; then
|
|
is_true $verbose && echo "$zfs_snapshot ... DONE"
|
|
else
|
|
is_true $verbose && echo "$zfs_snapshot ... FAIL"
|
|
is_true $count_failures && failures=$(($failures + 1))
|
|
fi
|
|
else
|
|
printf "%s\n" $zfs_list | grep -m 1 -q -E -e "^$1$" \
|
|
&& echo "$zfs_snapshot" \
|
|
|| err "Looks like zfs filesystem '$1' doesn't exist"
|
|
fi
|
|
else
|
|
warn "'$1' doesn't look like valid argument. Ignoring"
|
|
fi
|
|
fi
|
|
shift
|
|
fi
|
|
done
|
|
|
|
prefxes=`echo "$prefxes" | sed -e 's/^\|//'`
|
|
|
|
# delete snapshots
|
|
if is_true $delete_snapshots || [ $force_delete_snapshots_age -ne -1 ]; then
|
|
|
|
if is_false $zpool28fix; then
|
|
zfs_snapshots=`$zfs_cmd list -H -o name -t snapshot | grep -E -e "^.*@(${prefxes})?${date_pattern}--${htime_pattern}$" | sed -e 's#/.*@#@#'`
|
|
else
|
|
zfs_snapshots=`$zfs_cmd list -H -o name -t snapshot | grep -E -e "^.*@(${prefxes})?${date_pattern}--${htime_pattern}$"`
|
|
fi
|
|
|
|
current_time=`date +%s`
|
|
for i in `echo $zfs_snapshots | xargs printf "%s\n" | $ESED -e "s/^.*@//" | sort -u`; do
|
|
create_time=$(date2timestamp `echo "$i" | $ESED -e "s/--${htime_pattern}$//; s/^(${prefxes})?//"`)
|
|
if is_true $delete_snapshots; then
|
|
stay_time=$(time2s `echo $i | $ESED -e "s/^(${prefxes})?${date_pattern}--//"`)
|
|
[ $current_time -gt $(($create_time + $stay_time)) ] \
|
|
&& rm_snapshot_pattern="$rm_snapshot_pattern $i"
|
|
fi
|
|
if [ "$force_delete_snapshots_age" -ne -1 ]; then
|
|
[ $current_time -gt $(($create_time + $force_delete_snapshots_age)) ] \
|
|
&& rm_snapshot_pattern="$rm_snapshot_pattern $i"
|
|
fi
|
|
done
|
|
|
|
if [ "$rm_snapshot_pattern" != '' ]; then
|
|
rm_snapshots=$(echo $zfs_snapshots | xargs printf '%s\n' | grep -E -e "@`echo $rm_snapshot_pattern | sed -e 's/ /|/g'`" | sort -u)
|
|
for i in $rm_snapshots; do
|
|
rm_zfs_snapshot -r $i
|
|
done
|
|
fi
|
|
fi
|
|
|
|
# delete all snap
|
|
if [ "$delete_specific_fs_snapshots" != '' ]; then
|
|
rm_snapshots=`$zfs_cmd list -H -o name -t snapshot | grep -E -e "^($(echo "$delete_specific_fs_snapshots" | tr ' ' '|'))@(${prefxes})?${date_pattern}--${htime_pattern}$"`
|
|
for i in $rm_snapshots; do
|
|
rm_zfs_snapshot $i
|
|
done
|
|
fi
|
|
|
|
if [ "$delete_specific_fs_snapshots_recursively" != '' ]; then
|
|
rm_snapshots=`$zfs_cmd list -H -o name -t snapshot | grep -E -e "^($(echo "$delete_specific_fs_snapshots_recursively" | tr ' ' '|'))@(${prefxes})?${date_pattern}--${htime_pattern}$"`
|
|
for i in $rm_snapshots; do
|
|
rm_zfs_snapshot -r $i
|
|
done
|
|
fi
|
|
|
|
|
|
is_true $count_failures && exit $failures
|
|
exit 0
|
|
# vim: set ts=4 sw=4 expandtab:
|