XFS WAS [Re: RH 8.0 X server reconfig problem...]

[Andrew Mathews]

Net Llama! wrote:
<snip>
> 
> Andrew, do you know of any good documentation on xfsdump?  I've been 
> unable to find much that sanely walks a person through using it for 
> backup & recovery.
> 

The best I can lay my hands on is the O'Reilly Unix Backup & Recovery by 
W. Curtis Preston. ISBN # 1-56592-642-0. Essentially, what I use is 
based on the syntax of: /sbin/xfsdump -f /dev/st0 -o -l 0 -F -L 
/mountpoint. In reverse, to restore I use /sbin/xfsrestore -if /dev/st0 
/mountpoint. The interactive restore allows you to select or skip a 
dump, and when selecting, for example a restore of /usr, if you only 
want to restore /usr/local then select 2)Restore this dump, at which 
point you can do an "ls" to view the files in the dump, do an "add *" to 
select everything, or "add /local" for the /usr/local directory, or "add 
/usr/local/foo" for the individual file name. Each selection is 
indicated with an asterisk. When done selecting, simply do an "extract" 
and it's done. Remember that xfsdump backs up by the mountpoints, and 
uses the non-rewinding device. The script that I use, modified a tad for 
each individual machine is below. (Watch out for the linewrap)

#!/bin/bash
#
# Backup script for xfsdump
# Written by Andy Mathews
DATE=`date '-I'`
LEVEL=0
TAPELABEL=$HOSTNAME_${LEVEL}_${DATE}
TAPE=/dev/nst0
TAPEDOMAIN=$HOSTNAME
PARTITION1=/
PARTITION2=/boot
PARTITION3=/home
PARTITION4=/iso
PARTITION5=/tmp
PARTITION6=/usr
PARTITION7=/var
PARTITION8=/var/spool
LOG=/var/log/backups/${TAPELABEL}.log
LOG1=/var/log/backups/${TAPELABEL}.stat
TAPE_ARGS=${TAPE}
XFSDUMP="/sbin/xfsdump -f ${TAPE_ARGS} -o -l ${LEVEL} -F -p 30 -L 
${DATE}$TAPELABEL -M ${DATE}${TAPELABEL} "
# Rewind the tape
mt -f /dev/st0 rewind
#
if [ $? -ne 0 ]; then
         echo 'No tape loaded or something is wrong!'> $LOG
         /bin/mail -s "Tape not loaded - full backup of $TAPEDOMAIN 
FAILED `date`" root
         exit 1
fi
echo '' > $LOG1
echo '' > $LOG
echo "Backup starting on `date`" >> $LOG
echo "Backup starting on `date`" >> $LOG1
#
$XFSDUMP $PARTITION1 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION1            was successful" >> $LOG1
else
         echo "Dump of $PARTITION1 FAILED!" >> $LOG1
fi
mt -f $TAPE eod
$XFSDUMP $PARTITION2 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION2        was successful" >> $LOG1
else
         echo "Dump of $PARTITION2 FAILED!" >> $LOG1
fi
mt -f $TAPE eod
$XFSDUMP $PARTITION3 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION3        was successful" >> $LOG1
else
         echo $PARTITION3 Dump FAILED! >> $LOG1
fi
mt -f $TAPE eod
#$XFSDUMP $PARTITION4 | cut -c16-80 >>$LOG
#if [ $? -eq 0 ]; then
#        echo "Dump of $PARTITION4              was successful" >> $LOG1
#else
#        echo $PARTITION4 Dump FAILED! >> $LOG1
#fi
#mt -f $TAPE eod
$XFSDUMP $PARTITION5 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION5         was successful" >> $LOG1
else
         echo $PARTITION5 Dump FAILED! >> $LOG1
fi
mt -f $TAPE eod
$XFSDUMP $PARTITION6 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION6         was successful" >> $LOG1
else
         echo $PARTITION6 Dump FAILED! >> $LOG1
fi
mt -f $TAPE eod
$XFSDUMP $PARTITION7 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION7         was successful" >> $LOG1
else
         echo $PARTITION7 Dump FAILED! >> $LOG1
fi
mt -f $TAPE eod
$XFSDUMP $PARTITION8 | cut -c16-80 >>$LOG
if [ $? -eq 0 ]; then
         echo "Dump of $PARTITION8   was successful" >> $LOG1
else
         echo $PARTITION8 Dump FAILED! >> $LOG1
fi

echo "Backup completed on `date`" >> $LOG
echo "Backup completed on `date`" >> $LOG1
cat $LOG1 | mail -s "Level $LEVEL backup of $TAPEDOMAIN complete." root
rm -f $LOG
rm -f $LOG1
mt -f $TAPE rewoffl

This is what I use for DAT & DLT tape drives, you must add "-q" to the 
XFSDUMP line for QIC or Travan drives.
HTH,
-- 
Andrew Mathews
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