[linux-lvm] Backup of ROOT Partition.
Jean-Philippe Villeneuve
jeepii at globetrotter.net
Wed Jul 16 21:03:21 UTC 2008
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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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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