system backups

[Tony Sanders]

rel at mtu.edu (Robert E. Landsparger) writes:
>Unmount all the stuff you do not want to place in the back-up file (NFS mounts,
>CD rom, and unwanted vgroups, ...) and do the following (as root):
> 
>cd /
>find . -print | backup -ivp -f /dev/rmt*
> 
>This will cause everything to be placed in one file.  Not real bad, if you want
>a file, just get it out of this backup file.  The nice thing about this is
>that the save path is relative (not absolute).

In ksh I use this function (with my scripts include below):
    # ff - fast find
    function ff { grep -- "$*" /usr/dumps/catalog/full.daily ; }

If you don't want people to read the full.daily file then protect
the catalog directory.

You could use the "p" flag to compress the data if you need to.
Also, -C1024 seems to speed things up a little.

I run it from cron:
    15 2 * * 2,4,6 ( /usr/dumps/full 2>&1 |
                     mail -s "Output from backup: `date`" backups )

I also have cron setup to mail me a notice on monday mornings to change
the tape.

Here are the scripts I wrote for system backups to 8mm tape, incr hasn't
been tested very much.  These also include a list of errors (from errpt)
that occured during the backup.

------------------- /usr/dumps/ shar ----------------------
#!/bin/sh
#    This is a shell archive.
#    Run the following text with /bin/sh to extract.

echo x ./.dumpdates
mkdir ./.dumpdates
echo x ./catalog
mkdir ./catalog
echo x ./config
sed -e 's/^X//' << \EOFMARK > ./config
X# new style config file for rios
X# from ( full incr ) ". ./config"
X# this file sets up the /usr/dumps directory and the tape params
X
X# not used
Xparams="-s24000 -d10240"
Xroot=/usr/dumps/root
X
Xcat=/usr/dumps/catalog
Xdd=/usr/dumps/.dumpdates
Xtape=/dev/rmt0
Xfilelist="./ ./usr ./u ./home"
EOFMARK
echo x ./full
sed -e 's/^X//' << \EOFMARK > ./full
X#!/bin/sh
Xcd /usr/dumps
X. ./config
Xname="`basename $0`"
Xif [ "${name}" = "full" ]; then
X    findargs="-xdev"
Xelse
X    findargs="-newer ${dd}/full -xdev"
Xfi
Xtempfile=${cat}/${name}.0.$$
Xtouch ${dd}/.${name}
Xtrap 'rm -f ${tempfile}; exit 1' 1 2 3 15
X
Xerrpt > /tmp/full.$$
X
Xcd /
X(
X    for i in ${filelist}; do
X	find $i ${findargs} -print
X    done
X) | tee ${tempfile} | /etc/backup -q -if${tape}
Xrc="$?"
Xif [ "$rc" = "0" ]; then
X    mv ${dd}/.${name} ${dd}/${name}
X    # seq="`cat ${cat}/.seq.${name}`"
X    # mv ${tempfile} ${cat}/${name}.$seq
X    # seq="`expr $seq + 1`"
X    # echo $seq > ${cat}/.seq.${name}
X    mv ${tempfile} ${cat}/${name}.daily
Xelse
X    echo "problem with backup?"
Xfi
X
Xecho "\nerror report difference list for the period of the backup:"
Xerrpt | diff /tmp/full.$$ -
Xrm -f /tmp/full.$$
X
Xexit "$rc"
EOFMARK
chmod 755 ./full
echo x ./incr
sed -e 's/^X//' << \EOFMARK > ./incr
X#!/bin/sh
Xcd /usr/dumps
X. ./config
Xname="`basename $0`"
Xif [ "${name}" = "full" ]; then
X    findargs="-xdev"
Xelse
X    findargs="-newer ${dd}/full -xdev"
Xfi
Xtempfile=${cat}/${name}.0.$$
Xtouch ${dd}/.${name}
Xtrap 'rm -f ${tempfile}; exit 1' 1 2 3 15
X
Xerrpt > /tmp/full.$$
X
Xcd /
X(
X    for i in ${filelist}; do
X	find $i ${findargs} -print
X    done
X) | tee ${tempfile} | /etc/backup -q -if${tape}
Xrc="$?"
Xif [ "$rc" = "0" ]; then
X    mv ${dd}/.${name} ${dd}/${name}
X    # seq="`cat ${cat}/.seq.${name}`"
X    # mv ${tempfile} ${cat}/${name}.$seq
X    # seq="`expr $seq + 1`"
X    # echo $seq > ${cat}/.seq.${name}
X    mv ${tempfile} ${cat}/${name}.daily
Xelse
X    echo "problem with backup?"
Xfi
X
Xecho "\nerror report difference list for the period of the backup:"
Xerrpt | diff /tmp/full.$$ -
Xrm -f /tmp/full.$$
X
Xexit "$rc"
EOFMARK
chmod 755 ./incr
exit 0

-- sanders at cactus.org