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exit on failure of critical zfs commands

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Execution should not continue upon failure of certain zfs commands. In
particular, cleanup/rotation of the oldest snapshots will no longer
occur upon a failure to send/receive.
This commit is contained in:
Kevin McCormick 2016-09-12 11:39:29 -07:00
parent 12f7666a2f
commit 0850e82df3
1 changed files with 3 additions and 3 deletions
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6
backup-zfs
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@ -118,7 +118,7 @@ fi
### create new snapshot on src ### create new snapshot on src
### ###
cur="$srcfs@${tag}_$date" cur="$srcfs@${tag}_$date"
ZFS "$srchost" snapshot -r "$cur" ZFS "$srchost" snapshot -r "$cur" || die $? "zfs snapshot failed"
### ###
### find newest snapshot matching the tag on dest ### find newest snapshot matching the tag on dest
@ -132,14 +132,14 @@ last="$(ZFS "$desthost" list -d 1 -t snapshot -H -S creation -o name $destfs/$sr
# 1st time: send full snapshot # 1st time: send full snapshot
if [[ -z $last ]] ; then if [[ -z $last ]] ; then
log "sending full recursive snapshot from $src to $dest" log "sending full recursive snapshot from $src to $dest"
ZFS "$srchost" send -R "$cur" | ZFS "$desthost" receive -Fue "$destfs" ZFS "$srchost" send -R "$cur" | ZFS "$desthost" receive -Fue "$destfs" || die $? "zfs full send failed"
# special case: tagged snapshots exist on dest, but src has rotated through all # special case: tagged snapshots exist on dest, but src has rotated through all
elif ! ZFS "$srchost" list $srcfs@$last &>/dev/null ; then elif ! ZFS "$srchost" list $srcfs@$last &>/dev/null ; then
die 1 "no incremental path from from $src to $dest" die 1 "no incremental path from from $src to $dest"
# normal case: send incremental # normal case: send incremental
else else
log "sending incremental snapshot from $src to $dest (${last#${tag}_}..${cur#*@${tag}_})" log "sending incremental snapshot from $src to $dest (${last#${tag}_}..${cur#*@${tag}_})"
ZFS "$srchost" send -R -I "$last" "$cur" | ZFS "$desthost" receive -Fue "$destfs" ZFS "$srchost" send -R -I "$last" "$cur" | ZFS "$desthost" receive -Fue "$destfs" || die $? "zfs incremental send failed"
fi fi
### ###