-#Løper gjennom listen av unixmaskiner som vi skal ta backup av
-for computer in $unixcomputers
-do
-
- #tømmer variabelen for sikkerhets skyld
- filesystems=""
-
- #Sjekker nest siste felt i fstab. Om det er 0 tar vi ikke backup
- filesystems=`ssh -n $computer "cat /etc/fstab" \
- | grep -v nfs \
- | grep -v ^# \
- | awk '{ if ( $(NF-1) != "0" ) print $2}' `
-
- for filesystem in $filesystems
- do
- #lager en variant uten tegnet "/" eller $ (gjelder NT)
- sfilesystem=`echo $filesystem | tr '\/\$' '__'`
-
- #
- echo $filesystem > /backup/$computer/$sfilesystem.navn
- chmod 644 /backup/$computer/$sfilesystem.navn
-
- #standard backuplevel. full og daglig er eneste muligheter
- backuplevel=daglig
- #backuplevel=full
-
- #lager det som trengs av kataloger
- mkdir -m 755 -p /backup/$computer/$sfilesystem/{full,daglig} 2>/dev/null
-
- #Bør bare skje ved første gangs kjøring for dette fs
- if [ ! -f /backup/$computer/$sfilesystem/.dato ]
- then
- backuplevel=full
- echo $DATEs > /backup/$computer/$sfilesystem/.dato
- echo "$computer:$filesystem datofil laget"
- echo "$computer:$filesystem trenger full pga ingen fra foer"
- fi
-
- #sjekker om det er på tide med en full
- if
- [ -z `find /backup/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle` ]
- then
- echo "$computer:$filesystem trenger full pga lenge siden sist"
- backuplevel=full
- fi
-
- #gå ned i rett katalog
- cd /backup/$computer/$sfilesystem/$backuplevel
-
- #selve backupen
- backup
-
- #Sjekker om det er på tide å slette noen fulle backuper
- mf=$(($maksantallfulle+1))
- for full in `ls -1t /backup/$computer/$sfilesystem/full/*tgz | tail +$mf`
- do
- prefix=`echo $full|cut -d . -f 1`
- echo "$computer:$filesystem sletter full $prefix (for mange)"
- rm $prefix*
- done
-
- #Sjekker om det er på tide å slette noen daglige backuper
- eldste=`ls -t1 /backup/$computer/$sfilesystem/full/*tgz | tail -1`
- find \
- /backup/$computer/$sfilesystem/daglig \
- \! -newer $eldste \
- -printf "$computer:$filesystem sletter daglig %f (for gammel)\n" \
- -exec rm {} \;
-
- done
-
+# Check that the target filesystem is mounted (actually check that it's not
+# the root filesystem)
+if [ ! -d "$storagedir/$computer" ]; then
+ diemsg "Target filesystem ($storagedir/$computer) does not exist. Aborting"
+fi
+rootfilesystem=`df -P /`
+targetfilesystem=`df -P "$storagedir/$computer"`
+if [ "$rootfilesystem" == "$targetfilesystem" ]; then
+ diemsg "Target filesystem ($storagedir/$computer) was mounted on /. Aborting"
+fi
+
+echo `date`" $computer: Backing up $computer" >&2
+
+# Try to SSH to the computer without entering a password.
+if ! `ssh -n -o NumberOfPasswordPrompts=0 root@$computer /bin/true`; then
+ diemsg "Could not use passwordless SSH."
+fi
+
+# Check if pigz is available
+if ssh -n root@$computer "pigz -V 2>/dev/null"; then
+ compressor=pigz
+else
+ echo `date`" $computer: pigz missing; falling back to gzip."
+ compressor=gzip
+fi
+
+# Check dump bit in fstab
+filesystems=`ssh -n root@$computer "cat /etc/fstab" \
+ | grep -v nfs \
+ | grep -v "^#" \
+ | grep -v "^$" \
+ | awk '{ if ( $(NF-1) != "0" ) print $2}' `
+
+# Clean up our dir at this client
+if ! ssh root@$computer "rm -r /root/.backup ; mkdir -m 700 /root/.backup"; then
+ diemsg "Could not create backup staging area at $computer:/root/.backup"
+fi
+
+# Try to copy $exclude to $computer
+if ! scp $exclude root@$computer:/root/.backup/exclude > /dev/null; then
+ diemsg "Could not copy exclude.txt to $computer"
+fi
+
+# Try to copy preeexec and postexec if they exist
+if [ -f $confdir/preexec.$computer ]; then
+ if ! scp $confdir/preexec.$computer root@$computer:/root/.backup/preexec >&2; then
+ diemsg "Could not copy preexec.$computer to $computer:/root/.backup/preexec"
+ fi
+fi
+if [ -f $confdir/postexec.$computer ]; then
+ if ! scp $confdir/postexec.$computer root@$computer:/root/.backup/postexec >&2; then
+ diemsg "Could not copy postexec.$computer to $computer:/root/.backup/postexec"
+ fi
+fi
+
+# Try to run preexec if it exists
+if ! ssh root@$computer "[ ! -f /root/.backup/preexec ] || /bin/bash -x /root/.backup/preexec" >&2; then
+ diemsg "Could not run $computer:/root/.backup/preexec"
+fi
+
+for filesystem in $filesystems; do
+ # Remove / and $ (for Windows) for path names
+ sfilesystem=`echo $filesystem | tr '\/\$' '__'`
+
+ # Prepare storage area
+ mkdir -m 755 -p $storagedir/$computer/$sfilesystem/full 2>/dev/null
+ mkdir -m 755 -p $storagedir/$computer/$sfilesystem/daglig 2>/dev/null
+
+ # Default backuplevel
+ backuplevel=daglig
+
+ if [ ! -f $storagedir/$computer/$sfilesystem/.date ]
+ then
+ # Take the first full backup of this filesystem on this computer
+ backuplevel=full
+ echo $DATEs > $storagedir/$computer/$sfilesystem/.date
+ fi
+
+ # Check if we want a full backup
+ if [ -f $confdir/fastfullbackupdag.$computer.$sfilesystem ]; then
+ fullbackup_min_for_this_machine=$daysbetweenfullforfixed
+ if [ "$DAY_OF_MONTH" = "`cat $confdir/fastfullbackupdag.$computer.$sfilesystem`" ]; then
+ backuplevel=full
+ fi
+ elif [ -f $confdir/fastfullbackupdag.$computer ]; then
+ fullbackup_min_for_this_machine=$daysbetweenfullforfixed
+ if [ "$DAY_OF_MONTH" = "`cat $confdir/fastfullbackupdag.$computer`" ]; then
+ backuplevel=full
+ fi
+ else
+ fullbackup_min_for_this_machine=$daysbetweenfull
+ fi
+
+ if [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$fullbackup_min_for_this_machine`" ]; then
+ backuplevel=full
+ fi
+
+ # We want to be here
+ cd $storagedir/$computer/$sfilesystem/$backuplevelmsg || die "$storagedir/$computer/$sfilesystem/$backuplevel does not exist"
+
+ # Perform the actual backup
+ backup
+
+ # Check if this box has a custom number of full backups
+ if [ -f $confdir/maksfulle.$computer ] ; then
+ mf=$((`cat $confdir/maksfulle.$computer`+1))
+ else
+ mf=$(($maxnumfull+1))
+ fi
+
+ # Delete old full backups
+ for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz | tail -n +$mf`; do
+ prefix=`echo $full | sed "s/\.[^.]*$//"`
+ echo `date`": $computer:$filesystem Deleting full backup $prefix" >&2
+ rm $prefix*
+ done
+
+ # Delete incremental backups older than the oldest full backup
+ oldf=`ls -t1 $storagedir/$computer/$sfilesystem/full/*tgz | tail -1`
+ find \
+ $storagedir/$computer/$sfilesystem/daglig \
+ -type f \
+ \! -newer $oldf \
+ -printf "`date`: $computer: Deleting old incremental backup: %p\n" \
+ -exec rm {} \; >&2