diff options
Diffstat (limited to 'zb-cleanup')
| -rwxr-xr-x | zb-cleanup | 18 |
1 files changed, 15 insertions, 3 deletions
@@ -1,12 +1,12 @@ #!/bin/bash if [[ -z "$1" || -z "$2" ]] ; then - echo "usage: $0 <zfs_object> <density_percent>" >&2 + echo "usage: $0 <zfs_object> <density_percent> [max_age]" >&2 exit 1 fi if [[ "$2" -lt 100 ]] ; then - echo "density must not be lower than 100" >&2 + echo "density must be >= 100" >&2 exit 2 fi @@ -17,6 +17,11 @@ timestamp () { return $? } +max_age=0 +if [[ -n "$3" ]] ; then + max_age=`date --date="$3" +%s` +fi + density="$2" timenow=`date +%s` lasttime=0 @@ -30,12 +35,19 @@ done |sort -n | while read l ; do curtime=${l%% *} snapname=${l#* } + if [ "$curtime" -lt "$max_age" ] ; then + #too old + zfs destroy "$snapname" + continue + fi + if [ "$curtime" -ge "$timenow" ] ; then + #this actually shouldn't happen, but who knows break fi #if it's too dense, delete the closer snapshot - if [ $(( $density*($curtime-$lasttime)/($timenow-$lasttime) )) -lt 100 ] + if [ $(( ($density*($curtime-$lasttime))/($timenow-$lasttime) )) -lt 100 ] then zfs destroy "$snapname" else |