[CentOS] Max XFS journal size in Centos 6 = 2GB?

Tue Jun 18 16:33:39 UTC 2013
Mark Snyder <msnyder at highlandsolutions.com>

Yes, with kernel > 2.6.27. But see http://xfs.9218.n7.nabble.com/External-log-size-limitations-td11878.html, 512MB is recommended there instead of the max for a number of reasons.

FYI xfs does not yet support moving the log from internal to external or vice-versa, or growing the log size. You need to specify the log size and if it's external at creation time.

I've experimented with putting the external log file on a RAM drive, and it does speed things up. I would only do this temporarily though, since you would have no journal if the system crashed. 

Mark Snyder 
Director, Technology Solutions 
Highland Solutions 
200 South Michigan Ave., Suite 1000 
Chicago, IL 60604 
312-546-3474 (direct) 
312-957-4200 (support) 
helpdesk at highlandsolutions.com 


----- Original Message -----
From: "aurfalien" <aurfalien at gmail.com>
To: "CentOS mailing list" <centos at centos.org>
Sent: Friday, June 14, 2013 1:41:21 PM
Subject: [CentOS] Max XFS journal size in Centos 6 = 2GB?

Hi all,

I read that XFS now has a max journal size of 2Gb rather than 128M.

Is this correct?

Thanks in advance,

- aurf

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