added namelist for preserving snapshots selectively

[rrq/nilfs2sss.git] / sss.sh

diff --git a/sss.sh b/sss.sh
index 46facf989e0e4092283c3e90b6b4b236e015bfcd..4c2347cd0b1fdf4bbee27c0a744bccac3365a590 100755 (executable)
--- a/sss.sh
+++ b/sss.sh
@@ -8,6 +8,11 @@
 #
 # The cron bot is expected to run once a minute
 
+# Name of snapshot tag file for "important" snapshots. Format:
+# $CNO .... one line for each $CNO that should be preserved as snapshot
+# chcp ss $CNO && echo $CNO >> $NAMELIST
+NAMELIST=/etc/nilfs2sss.list
+
 # The hour-of-day to preserve as daily snapshot
 KEEPHH=12
 
@@ -34,7 +39,11 @@ YEARLY="$(date -d '-1 year' '+%Y-%m-%d %H:%M:%S')"
 MARK=( )
 function marksnap() {
     if [[ "${MARK[0]}" == "$1" ]] && [[ "${MARK[1]}" = "$2" ]] ; then
-       chcp cp $DEV ${MARK[2]}
+       if [ -r "$NAMELIST" ] && grep -q ^$3 "$NAMELIST" ; then
+           : # Don't change important snapshots
+       else
+           chcp cp $DEV ${MARK[2]}
+       fi
     fi
     MARK=( "$1" "$2" "$3" )
 }
@@ -45,19 +54,19 @@ function marksnap() {
   lscp -s $DEV | while read CNO DATE TIME REST ; do
       TS="$DATE $TIME"
       [ "$CNO" = "CNO" ] && continue
-      if [[ "$TS" < "$YEARLY" ]] ; then
+      if [[ ! "$TS" > "$YEARLY" ]] ; then
          marksnap YEAR "${DATE:0:4}" $CNO
-      elif [[ "$TS" < "$MONTHLY" ]] ; then
+      elif [[ ! "$TS" > "$MONTHLY" ]] ; then
           marksnap MONTH "${DATE:5:2}" $CNO
-      elif [[ "$TS" < "$WEEKLY" ]] ; then
+      elif [[ ! "$TS" > "$WEEKLY" ]] ; then
           # For older than most recent week, keep last snapshot each week
           marksnap WEEK "$(( 7${DATE:8:2} / 7 - 100 ))" $CNO
-      elif [[ "$TS" < "$DAILY" ]] ; then
+      elif [[ ! "$TS" > "$DAILY" ]] ; then
           marksnap DAY "${DATE:8:2}" $CNO
-      elif [[ "$TS" < "$HOURLY" ]] ; then
+      elif [[ ! "$TS" > "$HOURLY" ]] ; then
           marksnap HOUR "${DATE:8:2}-${TIME:0:2}" $CNO
       else
-         echo "$CNO $DATE $TIME within last hour"
+         : # echo "$CNO $DATE $TIME within last hour"
       fi
   done | if read X ; then
       : # snapshot within last hour