- #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}' `
-
- #clean up our dir at this client
- ssh $computer "rm -r ~/.backup ; mkdir -m 700 ~/.backup"
-
- #try to copy $exclude to $computer
- scp $exclude $computer:~/.backup/exclude ||
- echo "could not copy exclude.txt to $computer :("
-
- #try to copy preeexec and postexec if they exist
- [ -f $confdir/preexec.$computer ] &&
- scp $confdir/preexec.$computer $computer:~/.backup/preexec
- [ -f $confdir/postexec.$computer ] &&
- scp $confdir/postexec.$computer $computer:~/.backup/postexec
-
- #try to run preexec if it exist
- ssh $computer "[ -f ~/.backup/preexec ] && /bin/bash -x ~/.backup/preexec"
-
- for filesystem in $filesystems
- do
- #lager en variant uten tegnet "/" eller $ (gjelder NT)
- sfilesystem=`echo $filesystem | tr '\/\$' '__'`
-
- #lager det som trengs av kataloger
- mkdir -m 755 -p $storagedir/$computer/$sfilesystem/{full,daglig} 2>/dev/null
-
- #
- echo $filesystem > ${storagedir}/${computer}/.${sfilesystem}.name
- chmod 644 ${storagedir}/${computer}/.${sfilesystem}.name
-
- #set 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
-
- #sjekker om det er på tide med en full
- if
- [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle`" ]
- then
- backuplevel=full
- fi
-
- #gå ned i rett katalog
- cd $storagedir/$computer/$sfilesystem/$backuplevel
-
- #perform the actual backup
- backup
-
- #delete complete backups
- mf=$(($maksantallfulle+1))
- for full in `ls -1t $storagedir/$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
-
- #delete incremental backups older than the oldest complete backup
- oldf=`ls -t1 $storagedir/$computer/$sfilesystem/full/*tgz | tail -1`
- find \
- $storagedir/$computer/$sfilesystem/daglig \
- -type f \
- \! -newer $oldf \
- -exec rm {} \;
- #denne funker bare med gnu find
- #-printf "$computer:$filesystem sletter daglig %f (for gammel)\n" \
-
- done
-
- #try to run postexec if it exist
- ssh $computer "[ -f ~/.backup/postexec ] && /bin/bash -x ~/.backup/postexec"
-
+infomsg "Backing up $computer"
+
+# Try to SSH to the computer without entering a password.
+if ! ssh -n -o NumberOfPasswordPrompts=0 $username@$computer /bin/true; then
+ diemsg "Could not use passwordless SSH."
+fi
+
+# Find the home directory of the backup user
+remotehome=`ssh -n $username@$computer "echo ~"`
+if [ -z "$remotehome" ]; then
+ diemsg "Could not expand ~ for user $username"
+fi
+
+# Check if pigz is available
+if ssh -n $username@$computer "pigz -V 2>/dev/null"; then
+ compressor=pigz
+else
+ infomsg "pigz missing; falling back to gzip."
+ compressor=gzip
+fi
+
+# Check if nice and ionice are available
+if ssh -n $username@$computer "nice -n 19 ionice -c3 /bin/true 2>/dev/null"; then
+ nice="nice -n 19 ionice -c3"
+else
+ infomsg "nice and/or ionice missing; will run at normal priority."
+ nice=""
+fi
+
+# Check dump bit in fstab
+filesystems=`ssh -n $username@$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 -n $username@$computer "rm -r $remotehome/.backup ; mkdir -m 700 $remotehome/.backup"; then
+ diemsg "Could not create backup staging area at $computer:$remotehome/.backup"
+fi
+
+# Try to copy $exclude to $computer
+if ! scp $exclude $username@$computer:$remotehome/.backup/exclude >&2; 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 $username@$computer:$remotehome/.backup/preexec >&2; then
+ diemsg "Could not copy preexec.$computer to $computer:$remotehome/.backup/preexec"
+ fi
+fi
+if [ -f $confdir/postexec.$computer ]; then
+ if ! scp $confdir/postexec.$computer $username@$computer:$remotehome/.backup/postexec >&2; then
+ diemsg "Could not copy postexec.$computer to $computer:$remotehome/.backup/postexec"
+ fi
+fi
+
+# Try to run preexec if it exists
+if ! ssh -n $username@$computer "[ ! -f $remotehome/.backup/preexec ] || /bin/bash -x $remotehome/.backup/preexec" >&2; then
+ diemsg "Could not run $computer:$remotehome/.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 [ ! -s $storagedir/$computer/$sfilesystem/.date ]; then
+ # Take the first full backup of this filesystem on this computer
+ backuplevel=full
+ fi
+
+ # Check if we want a full backup
+ fixedfullbackupday=$( findconf fixedfullbackupday $computer $filesystem )
+ if [ "$fixedfullbackupday" ]; then
+ fullbackup_min_for_this_machine=$( findconf daysbetweenfullforfixed $computer $filesystem )
+ if [ "$DAY_OF_MONTH" = "$fixedfullbackupday" ]; then
+ backuplevel=full
+ fi
+ else
+ fullbackup_min_for_this_machine=$( findconf daysbetweenfull $computer $filesystem )
+ 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/$sfilesystem/$backuplevel || diemsg "$storagedir/$computer/$sfilesystem/$backuplevel does not exist"
+
+ # Perform the actual backup
+ if [ "$( findconf nonpriv $computer )" ]; then
+ nonprivbackup
+ else
+ backup
+ fi
+
+ # Delete old full backups
+ mf=$( findconf maxnumfull $computer $filesystem )
+ mf=$(( mf + 1 ))
+ for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz* | tail -n +$mf`; do
+ prefix=`echo $full | sed "s/\.[^.]*$//"`
+ infomsg "$computer:$filesystem Deleting full backup $prefix"
+ 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