> From: Discussion list for OpenIndiana [mailto:openindiana-
> [email protected]]
>
> On our backup servers I have a "backup-check" script that checks to see
> what the last snapshot for a particular volume is (and compares it with the
> current date)
This is how I do it:
By doing "zfs list" once and caching in tmpfile, I can easily parse with grep
many times over.
Obviously, according to the script below, my snapshots are named
@AutoRotate-`date '+%F'`
#!/usr/bin/bash
export PATH=/usr/gnu/bin:/usr/bin:/usr/sbin:/sbin
export TODAY=`date '+%F'`
TMPFILE=`mktemp /tmp/tmp.XXXXXXXX` # mktemp will randomize XXXXXXX
zfs list -H -o name -t snapshot > $TMPFILE
filesystems=`zfs list -H -o name -t filesystem,volume | egrep -v
'rpool/dump|rpool/swap'`
for fs in $filesystems ; do
latest=`grep "^${fs}@" $TMPFILE | tail -1`
if ( echo $latest | grep -q $TODAY ) ; then
echo "good $latest"
else
if ( grep -q "^${fs}@" $TMPFILE ) ; then
latest=`echo $latest | sed 's/^.*@AutoRotate-//'`
echo "outdated $latest $fs"
else
echo "not found $fs"
fi
fi
done
rm $TMPFILE
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