From: Stewart Smith <stewart@flamingspork.com>
To: Kenneth Emerson <kenneth.emerson@gmail.com>, xfs@oss.sgi.com
Subject: Re: Defragging XFS File Systems
Date: Tue, 07 Jun 2011 15:48:05 +1000 [thread overview]
Message-ID: <8739jmjip6.fsf@flamingspork.com> (raw)
In-Reply-To: <BANLkTi=40mmE+DCbLcSWBwNQtWpP=N=tXw@mail.gmail.com>
On Mon, 6 Jun 2011 22:52:48 -0500, Kenneth Emerson <kenneth.emerson@gmail.com> wrote:
> I hadn't given much thought to fragmentation of my TV recordings volume
> (XFS) until reading through some MythTV-users threads recently that
> mentioned how fragmented an XFS file system could become. After running
> xfs_db, I found out that my fs appeared to be quite bad:
MythTV can end up with fragmentation on XFS due to an fsync() call that
attempts to work raound limitations in ext3.
Workarounds include:
- allocsize mount parameter
- patch mythtv source not to fsync (you could easily write a patch that
only did fsync if not xfs... I've been meaning to do this for
years... not enough hours in day).
- run mythbackend with libeatmydata, thus disabling the fsync
--
Stewart Smith
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next prev parent reply other threads:[~2011-06-07 5:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-07 3:52 Defragging XFS File Systems Kenneth Emerson
2011-06-07 5:48 ` Stewart Smith [this message]
2011-06-07 12:05 ` Stan Hoeppner
[not found] ` <BANLkTikBSL8-eTAbF7a94ckLuZNyWCM=Eg@mail.gmail.com>
2011-06-08 21:00 ` Stan Hoeppner
2011-06-09 5:49 ` Michael Monnerie
2011-06-09 8:13 ` Stan Hoeppner
2011-06-09 10:12 ` Michael Monnerie
2011-06-09 18:24 ` Stan Hoeppner
2011-06-10 17:56 ` Dave Chinner
2011-06-11 1:12 ` Stan Hoeppner
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