86 lines
1.7 KiB
Bash
Executable File
86 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# script to recursively snapshot all zpools
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#
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# Author: Dave Eddy <dave@daveeddy.com>
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# Date: November 20, 2015
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# License: MIT
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VERSION='v1.0.0'
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usage() {
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local prog=${0##*/}
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cat <<-EOF
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usage: $prog [-hnx] <name> [[pool1] pool2 ...]
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recursively snapshot all zpools
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examples
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# $prog foo
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snapshot all zpools with the prefix foo
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# $prog bar pool1 pool2
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snapshot zpools pool1 and pool2 with the prefix bar
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# $prog -x baz pool3
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snapshot zpool pool3 with the *exact* snapshot name 'baz'
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options
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-h print this message and exit
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-n dry-run, don't actually create snapshots
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-x don't automatically append the date in epoch to
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the snapshot name
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-V print the version number and exit
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EOF
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}
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dryrun=false
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date=true
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while getopts 'hnxV' option; do
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case "$option" in
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h) usage; exit 0;;
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n) dryrun=true;;
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x) date=false;;
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V) echo "$VERSION"; exit 0;;
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*) usage; exit 1;;
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esac
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done
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shift "$((OPTIND - 1))"
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# prefix to use for snapshots
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name=$1
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if [[ -z $name ]]; then
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echo 'error: name must be specified as the first argument' >&2
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exit 1
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fi
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# optional list of pools
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shift
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pools=("$@")
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if (( ${#pools[@]} == 0 )); then
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# argument list was empty, use all pools
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while read -r zpool; do
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pools+=("$zpool")
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done < <(zpool list -Ho name)
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fi
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now=$(date +%s)
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code=0
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for zpool in "${pools[@]}"; do
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if $date; then
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snapshot=${zpool}@${name}_${now}
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else
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snapshot=${zpool}@${name}
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fi
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echo -n "zfs snapshot -r $snapshot"
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if $dryrun; then
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echo ' # dry-run: no action taken'
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else
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echo
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zfs snapshot -r "$snapshot" || code=1
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fi
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done
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exit "$code"
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