[CentOS] 'yum update' rollback or .. ?

Theo Band

theo.band at greenpeak.com
Fri Jun 22 12:16:55 UTC 2012

On 06/22/2012 01:58 PM, Nikolaos Milas wrote:
> I am interested on other solutions too, so your thread is interesting!

Assuming some form of ext[n] filesystem is being used. It has the
advantage that is also works with incremental backups. You can dump the
root file system and perhaps also the /boot filesystem.
Instead of the root filesystem, I dump a snaphost that is created each
evening. The snapshot has a frozen filesystem. So databases (mysql)
should just be consistent. If you want to be 100% sure, stop the
database, make a snapshot and start the database again. This is done
within one second, so hardly any impact on the live server.
Disadvantage of this method is that you still need the have a partition
table if you need to fully restore. And LVM and boot sector need to be
recreated. In case of disaster recovery you need this documented
properly (try it out at least once).
Advantage is that you can have daily system backups automatically created.


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