X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=sss.sh;h=35b592530c5a7f48a71b47f32b342e937d15766a;hb=refs%2Fheads%2Fmaster;hp=af393fb6b5522494c08e19046f6888a16a5fe454;hpb=a95b79e5cbf15cc74b038c649365400e1f50aab7;p=rrq%2Fnilfs2sss.git

diff --git a/sss.sh b/sss.sh
index af393fb..35b5925 100755
--- 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
 
@@ -15,6 +20,8 @@ KEEPHH=12
 KEEPDD=15
 
 DEV=$1
+[ "$2" = "all" ] || LSCP="-s"
+
 if [ -z "$DEV" ] ; then
     DEVS=( $( mount | grep nilfs2 | sed 's/ .*//' ) )
     DEV=${DEVS[0]}
@@ -31,126 +38,42 @@ MONTHLY="$(date -d '-1 month' '+%Y-%m-%d %H:%M:%S')"
 WEEKLY="$(date -d '-7 days' '+%Y-%m-%d %H:%M:%S')"
 YEARLY="$(date -d '-1 year' '+%Y-%m-%d %H:%M:%S')"
 
-function older_than_a_year() {
-    #echo "--- $CNO $DATE $TIME" >&2
-    [[ ! "$TS" < "$YEARLY" ]] && return 1
-    #echo "# keep the first snapshot of older years: $CNO $DATE $TIME" >&2
-    if [ "$KEEPYY" = "${DATE:0:4}" ] ; then
-	echo "$DEV: discard year duplicate $CNO $DATE $TIME" >&2
-	chcp cp $DEV $CNO
-    else
-	KEEPYY="${DATE:0:4}"
-    fi
-    return 0
-}
-
-function older_than_a_month() {
-    [[ ! "$TS" < "$MONTHLY" ]] && return 1
-    #echo "# keep the first snapshot of older months" >&2
-    if [ "$KEEPMM" = "${DATE:0:7}" ] ; then
-	echo "$DEV: discard month duplicate $CNO $DATE $TIME" >&2
-	chcp cp $DEV $CNO
-    else
-	KEEPMM="${DATE:0:7}"
-    fi
-    return 0
-}
-
-function older_than_a_week() {
-    [[ ! "$TS" < "$WEEKLY" ]] && return 1
-    if [[ "${DATE:8:2}" < "$KEEPDD" ]] ; then
-	#echo "# keep latest when before choice date: $CNO $DATE $TIME" >&2
-	if [ -n "$KEEPWW0" ] ; then
-	    echo "$DEV: discard outed $KEEPWW0" >&2
-	    chcp cp $DEV $KEEPWW0
-	fi
-	KEEPWW0=( $CNO $DATE $TIME ) 
-    else
-	#echo "# keep first when at or after choice date: $CNO $DATE $TIME" >&2
-	if [ -z "$KEEPWW" ] ; then
-	    if [ -n "$KEEPWW0" ] ; then
-		echo "$DEV: discard outed $KEEPWW0" >&2
-		chcp cp $DEV $KEEPWW0
-	    fi
-	    KEEPWW=( $CNO $DATE $TIME )
-	    continue
+MARK=( )
+function marksnap() {
+    if [[ "${MARK[0]}" == "$1" ]] && [[ "${MARK[1]}" = "$2" ]] ; then
+	if [ -r "$NAMELIST" ] && grep -q ^$3 "$NAMELIST" ; then
+	    : # Don't change important snapshots
 	else
-	    echo "$DEV: discard monthly extras: $CNO $DATE $TIME" >&2
-	    chcp cp $DEV $CNO
-	fi
-    fi
-    return 0
-}
-
-function older_than_a_day() {
-    [[ ! "$TS" < "$DAILY" ]] && return 1
-    if [[ "${TIME:0:2}" < "$KEEPHH" ]] ; then
-	#echo "# keep latest when before choice hour: $CNO $DATE $TIME" >&2
-	if [ -n "$KEPTHH0" ] ; then
-            echo "$DEV: discard outed $KEPTHH0" >&2
-            chcp cp $DEV $KEPTHH0
-        fi
-        KEPTHH0=( $CNO $DATE $TIME )
-    else
-	#echo "# keep first when at/after choice hour: $CNO $DATE $TIME" >&2
-	if [ -z "$KEPTHH" ] ; then
-	    if [ -n "$KEPTHH0" ] ; then
-		echo "$DEV: discard outed $KEPTHH0" >&2
-		chcp cp $DEV $KEPTHH0
-		KEPTHH0=
-            fi
-            KEPTHH=( $CNO $DATE $TIME )
-	else
-	    echo "$DEV: discard daily extras: $CNO $DATE $TIME" >&2
-	    chcp cp $DEV $CNO
-	fi
-    fi
-}
-
-function older_than_an_hour() {
-    [[ ! "$TS" < "$HOURLY" ]] && return 1
-    #echo "# keep first of each hour: $CNO $DATE $TIME" >&2
-    if [[ "$KEPT55"  != "${TIME:0:2}" ]] ; then
-	KEPT55="${TIME:0:2}"
-    else
-	echo "$DEV: discard hourly duplicate: $CNO $DATE $TIME" >&2
-	chcp cp $DEV $CNO
-    fi
-    return 0
-}
-
-function older_than_5_minutes() {
-    if [[ ! "$TS" < "$FIVELY" ]] ; then
-	echo "$CNO $DATE $TIME is within last five minutes"
-    else
-	: # no noise here
-	if [[ "$TS" < "$NEXT" ]] ; then
-	    echo "$DEV: discard 5-minutely duplicate: $CNO $DATE $TIME" >&2
-	    chcp cp $DEV $CNO
-	else
-	    T=${TS:0:15}$(( ( ${TS:15:1} / 5 ) * 5 )):00
-	    NEXT="$(date -d "5 minutes $T" '+%Y-%m-%d %H:%M:%S')"
-	    #echo "NEXT=$NEXT" >&2
+	    chcp cp $DEV ${MARK[2]}
 	fi
     fi
+    MARK=( "$1" "$2" "$3" )
 }
 
 { flock 9
 
-date "+$DEV: %Y-%m-%d %H:%M:%S ---- checking" >&2
-lscp -s $DEV | while read CNO DATE TIME REST ; do
-    TS="$DATE $TIME"
-    [ "$CNO" = "CNO" ] ||
-	older_than_a_year ||
-	older_than_a_month ||
-	older_than_a_week ||
-	older_than_a_day ||
-	older_than_an_hour ||
-	older_than_5_minutes
-done | if read X ; then
-    :
-elif [[ $(( $(date +%M|sed 's/^0//') % 5 )) = 0 ]] ; then
-    date "+$DEV: new snapshot at %Y-%m-%d %H:%M:%S" >&2
-    mkcp -s $DEV
-fi
+  date "+$DEV: %Y-%m-%d %H:%M:%S ---- checking" >&2
+  lscp $LSCP $DEV | while read CNO DATE TIME REST ; do
+      TS="$DATE $TIME"
+      [ "$CNO" = "CNO" ] && continue
+      if [[ ! "$TS" > "$YEARLY" ]] ; then
+	  marksnap YEAR "${DATE:0:4}" $CNO
+      elif [[ ! "$TS" > "$MONTHLY" ]] ; then
+	   marksnap MONTH "${DATE:5:2}" $CNO
+      elif [[ ! "$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" > "$DAILY" ]] ; then
+	   marksnap DAY "${DATE:8:2}" $CNO
+      elif [[ ! "$TS" > "$HOURLY" ]] ; then
+	   marksnap HOUR "${DATE:8:2}-${TIME:0:2}" $CNO
+      else
+	  : # echo "$CNO $DATE $TIME within last hour"
+      fi
+  done | if read X ; then
+      : # snapshot within last hour
+  else
+      date "+$DEV: new snapshot at %Y-%m-%d %H:%M:%S" >&2
+      mkcp -s $DEV
+  fi
 } 9> /var/run/lock/sss.lock