Re: [Evms-devel] Snapshots in batch...

[Michel B. <mi...@bo...>]

Le Dimanche 1 Décembre 2002 02:46, Matt Zimmerman a écrit :
>
> > Well, I use a bash script because it is a backup script, that does much
> > more than just executing a couple of EVMS commands: mount, umount, tar,
> > cp, tests, completion logs...
>
> In that case, why not snapshot each volume before you back it up, and then
> delete the snapshot immediately after?

That's exactly what my simple script does. Basically, it is:

#! /bin/bash

# Backup complet disque-à-disque du système depuis snapshots EVMS
#
# Ecrit par Michel Bouissou le 30/11/2002

# Paramètres

LOGFILE=/var/log/sysbackup.log

TXTDATE=$(eval date --date 'today' '+"%A %-d %B %Y"')

# Début
echo "Sauvegarde complète du système le $TXTDATE" > $LOGFILE
echo "" >> $LOGFILE

# Etat initial
df 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Activation des snapshots
evms -v1 2>&1 >> $LOGFILE << EOF1
create:volume,f_snap_racine,name=snap_racine:
commit:
create:volume,f_snap_boot,name=snap_boot:
commit:
create:volume,f_snap_usr,name=snap_usr:
commit:
create:volume,f_snap_var,name=snap_var:
commit:
create:volume,f_snap_tmp,name=snap_tmp:
commit:
create:volume,f_snap_home,name=snap_home:
commit:
exit
EOF1

echo "" >> $LOGFILE

# Effacement (formatage) des volumes de destination
mke2fs -j -L bkp_racine /dev/evms/bkp_racine 2>&1 >> $LOGFILE
mke2fs -j -L bkp_boot /dev/evms/bkp_boot 2>&1 >> $LOGFILE
mke2fs -j -L bkp_usr /dev/evms/bkp_usr 2>&1 >> $LOGFILE
mke2fs -j -L bkp_var /dev/evms/bkp_var 2>&1 >> $LOGFILE
mke2fs -j -L bkp_home /dev/evms/bkp_home 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Montage des snapshost à sauvegarder
mount -v -t ext3 -o ro /dev/evms/snap_racine /mnt/snap/racine 2>&1 >> $LOGFILE
mount -v -t ext3 -o ro /dev/evms/snap_boot /mnt/snap/boot 2>&1 >> $LOGFILE
mount -v -t ext3 -o ro /dev/evms/snap_usr /mnt/snap/usr 2>&1 >> $LOGFILE
mount -v -t ext3 -o ro /dev/evms/snap_var /mnt/snap/var 2>&1 >> $LOGFILE
mount -v -t ext3 -o ro /dev/evms/snap_tmp /mnt/snap/tmp 2>&1 >> $LOGFILE
mount -v -t ext3 -o ro /dev/evms/snap_home /mnt/snap/home 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Montage des volumes de destination
mount -v -t ext3 -o noatime,data=writeback /dev/evms/bkp_racine 
/mnt/bkp/racine 2>&1 >> $LOGFILE
mount -v -t ext3 -o noatime,data=writeback /dev/evms/bkp_boot /mnt/bkp/boot 
2>&1 >> $LOGFILE
mount -v -t ext3 -o noatime,data=writeback /dev/evms/bkp_usr /mnt/bkp/usr 2>&1 
>> $LOGFILE
mount -v -t ext3 -o noatime,data=writeback /dev/evms/bkp_var /mnt/bkp/var 2>&1 
>> $LOGFILE
mount -v -t ext3 -o noatime,data=writeback /dev/evms/bkp_home /mnt/bkp/home 
2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Exécution des sauvegardes
cp -ax /mnt/snap/racine /mnt/bkp/ 2>&1 >> $LOGFILE
cp -ax /mnt/snap/tmp /mnt/bkp/racine/ 2>&1 >> $LOGFILE
cp -ax /mnt/snap/boot /mnt/bkp/ 2>&1 >> $LOGFILE
cp -ax /mnt/snap/usr /mnt/bkp/ 2>&1 >> $LOGFILE
cp -ax /mnt/snap/var /mnt/bkp/ 2>&1 >> $LOGFILE
cp -ax /mnt/snap/home /mnt/bkp/ 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Etat final
df 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Démontage des volumes de destination
umount -v /mnt/bkp/racine 2>&1 >> $LOGFILE
umount -v /mnt/bkp/boot 2>&1 >> $LOGFILE
umount -v /mnt/bkp/usr 2>&1 >> $LOGFILE
umount -v /mnt/bkp/var 2>&1 >> $LOGFILE
umount -v /mnt/bkp/home 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Démontage des snapshots
umount -v /mnt/snap/racine 2>&1 >> $LOGFILE
umount -v /mnt/snap/boot 2>&1 >> $LOGFILE
umount -v /mnt/snap/usr 2>&1 >> $LOGFILE
umount -v /mnt/snap/var 2>&1 >> $LOGFILE
umount -v /mnt/snap/tmp 2>&1 >> $LOGFILE
umount -v /mnt/snap/home 2>&1 >> $LOGFILE
echo "" >> $LOGFILE

# Désactivation des snapshots
evms -c -v1 2>&1 >> $LOGFILE << EOF2
revert:/dev/evms/snap_racine:

revert:/dev/evms/snap_boot:

revert:/dev/evms/snap_usr:

revert:/dev/evms/snap_var:

revert:/dev/evms/snap_tmp:

revert:/dev/evms/snap_home:

commit:
exit
EOF2

echo "" >> $LOGFILE

# Etat final
mount 2>&1 >> $LOGFILE
echo "" >> $LOGFILE


-- 
Michel Bouissou <mi...@bo...> OpenPGP ID 0xDDE8AC6E