[Ocfs2-users] Backup issues

[Dirk Bonenkamp - ProActive]

Hi Luis,

Thank you for your reply. Noatime is enabled:

/dev/drbd0 on /var/scans type ocfs2 (rw,_netdev,noatime,cluster_stack=pcmk)

Without noatime performance was even worse!

Cheers,

Dirk


Op 4-4-2012 18:44, Luis Freitas schreef:
> Dirk,
>  
>    Also, you should have noatime enabled on this filesystem, check
> your mount options. Or else the rsync will end up causing access time
> to be updated.
>  
> Regards,
> Luis
>
> *From:* Eduardo Diaz - Gmail <ediazrod at gmail.com>
> *To:* Dirk Bonenkamp - ProActive <dirk at proactive.nl>
> *Cc:* ocfs2-users at oss.oracle.com
> *Sent:* Tuesday, April 3, 2012 11:26 AM
> *Subject:* Re: [Ocfs2-users] Backup issues
>
> For backup I use a local copy using tar, but I use rsync too.
>
> I don't compare but if you send any stadistics about rsync we can said
> more information.
>
> use rsync **--stats
>
> I don't note difernt speed, but did you make a full rsync, and show
> --progress for see that file it is going at what speed?
>
> regards
> **
>
> On Mon, Apr 2, 2012 at 9:04 PM, Dirk Bonenkamp - ProActive
> <dirk at proactive.nl <mailto:dirk at proactive.nl>> wrote:
>
>     Hi All,
>
>     I'm currently testing a OCFS2 set-up, and I'm having issues with
>     creating backups.
>
>     I have a 2 node cluster, running OCFS2 on a dual primary DRBD device.
>
>     The file system is 3.7Tb of which 211 Gb is used: about 1.5 million
>     files in 95 directories.
>
>     Everything works fine, except for the backups, which are taking
>     way more
>     time than on 'regular' file systems.
>
>     I'm using rsync for my backups. When I rsync the file system
>     above, this
>     takes more than an hour, without any modifications to the file system.
>
>     Network / disk speed is good. I can rsync a 10 Gb file from the OCFS2
>     filesystem to the same backup server with just under 100 Mb/s.
>
>     I know there is some penalty to be expected from a clustered file
>     system, but this is al lot. Rsyncing an ext3 file system double
>     the size
>     (in Mb's and files) of this file system takes about 600 seconds...
>
>     Has anybody some advice on a backup strategy for me? Or some
>     tuning tips?
>
>     Thanks in advance,
>
>     Dirk
>
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