# in English, we should probably stick to that.
# TODO(sesse, 2007-12-16):
-# * Bruk tee i stedet for en separat tar ztvf-prosess
# * Sjekk hvorfor .idx-filene til UD er blitt 0 for siste fullbackuper
+# * Rydde uleselig kode fra linje 211 og litt nedover
# Configuration
LOCKFILE=/home/backup/backuprun.lockfile
tar=tar
fi
- #expand the exclude-path for use with tar
+ # expand the exclude-path for use with tar
exf=`ssh root@$computer "ls ~/.backup/exclude"`
- #We try to run tar on the remote computer
+ # We try to run tar on the remote computer
# z gzip it
# c create archive
# C change to directory first
# $lastcmd only files newer than this
# --one-file-system don't traverse file systems
# --exclude-from file to get exclusion pattern from
- # And at last, redirect stdout to stderr, to get output logged.
+ # Pipe the stuff over ssh to ourselves, run pee to cat the contents to a
+ # file and build a file list, respectivly.
TARFILE=$DATE.tmp
TARCMD="ssh root@$computer \"$tar --one-file-system -zcf - -C $filesystem . $lastcmd \
- --exclude-from=$exf\" > $TARFILE"
+ --exclude-from=$exf\" | pee \"cat > $TARFILE\" \"tar tvf -\""
echo `date`" $computer: Running $TARCMD" >&2
- eval $TARCMD;
+ eval $TARCMD > $DATE.idx
+
if [ -s $TARFILE ]; then
+ # File is >0 in size, we assume it worked.
+
+ # Move tar file in place
mv $TARFILE $DATE.tgz
- #make a filelist.
- #update the datefile if the filelist is ok.
- tar tvfz $DATE.tgz > $DATE.idx 2>&1 &&
- echo $DATEs > ../.date &&
- touch -t $DATE ../.date
- #make a sortet filelist
+ # Update timestamp
+ echo $DATEs > ../.date && touch -t $DATE ../.date
+
+ # Make a sorted filelist
grep -v ^d $DATE.idx | sort -n -r -k 2 > $DATE.sdx
- #fix perm
+ # Fix permissions
chmod 600 *tgz #only for us
chmod 644 *sdx *idx 2>/dev/null #everyone can read
else
- #it did not work
+ # Something wrong happened.
rm $TARFILE
echo `date`" $computer: $TARFILE empty. $backuplevel backup of $computer:$filesystem failed and deleted"
}
-#Løper gjennom listen av unixmaskiner som vi skal ta backup av
for computer in $unixcomputers
do
(
- # Check that the target filesystem is mounted
- # (actually check that it's not the root filesystem)
+ # Check that the target filesystem is mounted (actually check that it's not
+ # the root filesystem)
rootfilesystem=`df -P /`
targetfilesystem=`df -P "$storagedir/$computer"`
if [ "$rootfilesystem" == "$targetfilesystem" ]; then
continue;
fi
- #tømmer variabelen for sikkerhets skyld
filesystems=""
- #Sjekker nest siste felt i fstab. Om det er 0 tar vi ikke backup
+ # Check dump bit in fstab
filesystems=`ssh -n root@$computer "cat /etc/fstab" \
| grep -v nfs \
| grep -v "^#" \
| grep -v "^$" \
| awk '{ if ( $(NF-1) != "0" ) print $2}' `
- #clean up our dir at this client
+ # Clean up our dir at this client
if ! ssh root@$computer "rm -r ~/.backup ; mkdir -m 700 ~/.backup"; then
echo `date`" $computer: Could not create backup staging area at $computer:~/.backup - skipping backup of $computer"
- # We don't want to return 0
R=1
continue;
fi
- #try to copy $exclude to $computer
+ # Try to copy $exclude to $computer
if ! scp $exclude root@$computer:~/.backup/exclude > /dev/null; then
echo `date`" $computer: Could not copy exclude.txt to $computer - skipping backup of $computer"
- # We don't want to return 0
R=1
continue;
fi
- #try to copy preeexec and postexec if they exist
+ # Try to copy preeexec and postexec if they exist
# TODO: Gah, clean this mess!
[ -f $confdir/preexec.$computer ] && (
scp $confdir/preexec.$computer root@$computer:~/.backup/preexec >&2 ||
)
)
- #try to run preexec if it exist
+ # Try to run preexec if it exist
if ! ssh root@$computer "[ ! -f ~/.backup/preexec ] || /bin/bash -x ~/.backup/preexec" >&2; then
echo `date`" $computer: Could not run $computer:~/.backup/preexec - skipping backup of $computer"
R=1
for filesystem in $filesystems
do
- #lager en variant uten tegnet "/" eller $ (gjelder NT)
+ # Remove / and $ (for Windows) for path names
sfilesystem=`echo $filesystem | tr '\/\$' '__'`
- #lager det som trengs av kataloger
+ # Prepare storage area
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
+ # Default backuplevel
backuplevel=daglig
if [ ! -f $storagedir/$computer/$sfilesystem/.date ]
then
- #take the first full backup of this filesystem on this computer
+ # 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
+ # Check if we want a full backup
if [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle`" ]; then
backuplevel=full
fi
- #gå ned i rett katalog, eller dø
- # TODO bør sende mail om dette skjer!
+ # We want to be here
cd $storagedir/$computer/$sfilesystem/$backuplevel || die
- #perform the actual backup
+ # Perform the actual backup
backup
- # Sjekk om det skal være et annet antall fulle backuper av en boks
+ # 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=$(($maksantallfulle+1))
fi
- #delete complete backups
+ # Delete old full backups
for full in `ls -1t $storagedir/$computer/$sfilesystem/full/*tgz | tail -n +$mf`
do
prefix=`echo $full | sed "s/\.[^.]*$//"`
rm $prefix*
done
- #delete incremental backups older than the oldest complete backup
+ # Delete incremental backups older than the oldest full backup
oldf=`ls -t1 $storagedir/$computer/$sfilesystem/full/*tgz | tail -1`
find \
$storagedir/$computer/$sfilesystem/daglig \
-exec rm {} \; >&2
done
- #try to run postexec if it exist
+ # Try to run postexec if it exist
if ! ssh root@$computer "[ ! -f ~/.backup/postexec ] || /bin/bash -x ~/.backup/postexec" >&2; then
echo `date`" $computer: Could not run $computer:~/.backup/postexec"
R=1
# Did anything go wrong?
# (IMPORTANT NOTE: The R-business does not work as expected, since this script
-# forks itself.
+# forks itself).
if [ $R != 0 ]; then
echo `date`": Backup run ended with errors, check logs."
exit 1
projects / backup.sh / commitdiff