From: <Ivan.Novick@emc.com>
To: xfs@oss.sgi.com
Cc: Timothy.Heath@emc.com
Subject: allocsize mount option
Date: Tue, 28 Sep 2010 14:53:46 -0400 [thread overview]
Message-ID: <C8C787CA.44AA%ivan.novick@emc.com> (raw)
Hi all,
According to the documentation the allocsize mount option: "Sets the
buffered I/O end-of-file preallocation size when doing delayed allocation
writeout"
Will this value limit "extent" sizes to be be no smaller than the allocsize?
I have set the following mount options:
(rw,noatime,nodiratime,logbufs=8,allocsize=512m)
And yet, depending on the workload, the extent sizes are often 1 or 2 orders
of magnitude lower than 512 MB ...
If I wanted to do further reading on the subject, can someone point me to an
approximate location in the code where the size of a newly created extent is
determined?
Cheers,
Ivan Novick
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next reply other threads:[~2010-09-28 18:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 18:53 Ivan.Novick [this message]
2010-09-29 0:31 ` allocsize mount option Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2011-01-20 20:41 Peter Vajgel
2011-01-21 0:48 ` Dave Chinner
2010-01-24 6:44 Gim Leong Chin
2010-01-15 3:08 Gim Leong Chin
2010-01-14 17:25 Gim Leong Chin
2010-01-14 17:42 ` Eric Sandeen
2010-01-14 23:28 ` Dave Chinner
2010-01-13 9:42 Gim Leong Chin
2010-01-13 10:50 ` Dave Chinner
2010-01-11 17:25 Gim Leong Chin
2010-01-11 18:16 ` Eric Sandeen
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