holm/zfs-auto-snapshot
1
0
Fork 0
forked from extern/zfs-auto-snapshot
Code Issues Pull Requests Packages Projects Releases Wiki Activity

If no snapshots were ever taken for this schedule, take one via check_missed_snapshot() on startup.

Browse Source
This commit is contained in:
Tim Foster 2008-09-02 14:01:59 +01:00
parent 05a31dff35
commit 4591fe27ea
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/lib/svc/method/zfs-auto-snapshot
View File

@ -301,7 +301,6 @@ function unschedule_snapshots {
# if the last snapshot was taken more than <frequency> <intervals> ago,
# and if that's the case, takes a snapshot immediatedly.
function check_missed_snapshots { # $INTERVAL $PERIOD $FMRI <repopulate cache>
set -x
typeset INTERVAL=$1
typeset PERIOD=$2
@ -351,13 +350,19 @@ function check_missed_snapshots { # $INTERVAL $PERIOD $FMRI <repopulate cache>
LAST_SNAPSHOT=$(zfs list -H -o name -r -t snapshot ${fs[0]} \
| grep "${fs[0]}@${PREFIX}${LABEL}" | tail -1)
# if we've never taken a snapshot, do nothing
# if we've never taken a snapshot, then we probably should
# arrange to have one taken now. Fake the LAST_SNAP_TIME variable
if [ -z "$LAST_SNAPSHOT" ] ; then
return 0
LAST_SNAP_TIME=0
LAST_SNAP_TIME_HUMAN="[ no snapshot taken yet ]"
fi
LAST_SNAP_TIME=$(zfs get -H -p -o value creation $LAST_SNAPSHOT)
LAST_SNAP_TIME_HUMAN=$(zfs get -H -o value creation $LAST_SNAPSHOT)
# if we have taken a snapshot, find out when it was
if [ -n "$LAST_SNAPSHOT" ] ; then
LAST_SNAP_TIME=$(zfs get -H -p -o value creation $LAST_SNAPSHOT)
LAST_SNAP_TIME_HUMAN=$(zfs get -H -o value creation $LAST_SNAPSHOT)
fi
NOW=$(perl -e 'print time;')
# slightly incorrect time accounting here, but good enough.