From: Christoph Hellwig <hch@infradead.org>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: Brian Foster <bfoster@redhat.com>, xfs@oss.sgi.com
Subject: Re: [FAQ] XFS speculative preallocation
Date: Sat, 22 Mar 2014 06:32:52 -0700 [thread overview]
Message-ID: <20140322133252.GA20779@infradead.org> (raw)
In-Reply-To: <87eh1vuxam.fsf@mid.deneb.enyo.de>
On Fri, Mar 21, 2014 at 09:11:29PM +0100, Florian Weimer wrote:
> I see rather dramatic fragmentation of the systemd journal when it is
> stored on XFS, and it calls posix_fallocate before writing data to the
> file.
You mean it calls fallocate before each write? That's not very useful
behaviour and should be fixed. If it calls fallocate for the whole
expeted file size (or large increments) it should not fragment the file,
and if it does there's a bug we'd need to look into.
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next prev parent reply other threads:[~2014-03-22 13:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-21 16:29 [FAQ] XFS speculative preallocation Brian Foster
2014-03-21 16:54 ` Shaun Gosse
2014-03-21 17:09 ` Arkadiusz Miśkiewicz
2014-03-21 18:02 ` Brian Foster
2014-03-21 23:16 ` Dave Chinner
2014-03-21 20:11 ` Florian Weimer
2014-03-21 23:10 ` Dave Chinner
2014-03-21 23:13 ` Eric Sandeen
2014-03-21 23:18 ` Dave Chinner
2014-03-22 13:32 ` Christoph Hellwig [this message]
2014-03-21 23:05 ` Dave Chinner
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