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Re: [linux-lvm] Backup of ROOT Partition.



I tried the folowing recipe: http://tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html with the folowing script:

/****************************/

#!/bin/sh
BAKLVMNAME=sysbackup
lvcreate -L592M -s -n $BAKLVMNAME  /dev/VolGroup00/LogVol00
mount /dev/VolGroup00/$BAKLVMNAME /mnt/sysbackup/ -o ro
cd /mnt/sysbackup
time tar -cjvpf /mnt/serveur/backSysVol.bz2 *
cd ..
umount /mnt/sysbackup
lvremove -f /dev/VolGroup00/$BAKLVMNAME

/****************************/

I get the folowing error:
 Rounding up size to full physical extent 608.00 MB
 Insufficient free extents (1) in volume group VolGroup00: 19 required

It works find if I do it with -L20M.
How do I change the LogicalVolumeSize?

according to 'df' I have plenty of space for data.

# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      35G  6.0G   27G  19% /
/dev/md0              677G  270G  373G  42% /mnt/serveur
/dev/sda1             190M   26M  155M  15% /boot
tmpfs                 374M     0  374M   0% /dev/shm

Am I missing something?

Jean-Philippe Villeneuve wrote:

Bryan Kadzban wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: RIPEMD160

Jean-Philippe Villeneuve wrote:
I would like to know if I can backup all my system partitions(ROOT included) using a snapshot?

Depends on what you mean by "backup [...] using a snapshot".

If you mean taking a snapshot, then mounting it somewhere and pointing
your backup software to that mount point, then unmounting and deleting
the snapshot after the backup is done, then yes, it should work fine.
This is exactly what I want to do. I just want the latest configuration, users files etc. I realy don't need files at a specific date with tons of backups.

Than you all for the fast and acurate answers.

Jean-Philippe


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