[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-xfs
Subject:    Re: Anyone using XFS in production on > 20TiB volumes?
From:       Emmanuel Florac <eflorac () intellique ! com>
Date:       2010-12-23 0:26:55
Message-ID: 20101223012655.2681c596 () galadriel ! home
[Download RAW message or body]

Le Wed, 22 Dec 2010 13:03:13 -0600 vous écriviez:

> http://xfs.org/index.php/XFS_FAQ#Q:_I_want_to_tune_my_XFS_filesystems_for_.3Csomething.3E
> 
> which mentions getting your geometry right if it's hardware raid
> that can't be detected automatically.

Just as a side note : I tried several times to manually set the
filesystem layout to precisely match the underlying hardware RAID
with sunit and swidth but didn't find that it made a noticeable
difference. On my 39.9 TB systems, the default agcount is 39, while the
optimum would be (theorically at least)  42. 

-- 
------------------------------------------------------------------------
Emmanuel Florac     |   Direction technique
                    |   Intellique
                    |	<eflorac@intellique.com>
                    |   +33 1 78 94 84 02
------------------------------------------------------------------------

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

[prev in list] [next in list] [prev in thread] [next in thread]