[CentOS] CentOS Server Backup Options: at runlevel 5?
incoming-centos at rjl.com
Wed Mar 14 14:59:28 EDT 2012
On 03/14/2012 08:43 AM, Les Mikesell wrote:
> On Wed, Mar 14, 2012 at 10:10 AM, ken <gebser at mousecar.com> wrote:
>> What (FOSS) backup apps can back up a system running at level 3/5?
> Almost all backup methods except raw partition/disk images will work
> with the system running. You aren't guaranteed that files will be in
> a consistent state when restored, but the OS itself is fairly sure to
> work and databases and similar apps usually have their own ways to do
> live consistent snapshots.
I find that LVM snapshots are useful to insure data integrity. for
example, I backup my mysql databases by stopping the mysql server,
taking an LVM snapshot and restarting it. The whole snapshot process
probably takes less then 15 seconds. Then I backup the snapshot LVM and
it doesn't matter how long it takes. You must make sure that your
snapshot volume is large enough that you won't run out of space before
deleting the snapshot.
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