From: David Chinner <dgc@sgi.com>
To: Thor Kristoffersen <thorkr@gmail.com>
Cc: xfs@oss.sgi.com
Subject: Re: Does XFS prevent disk spindown?
Date: Tue, 1 Apr 2008 10:30:05 +1000 [thread overview]
Message-ID: <20080401003005.GJ103491721@sgi.com> (raw)
In-Reply-To: <m2tzimbvif.fsf@getmail.no>
On Mon, Mar 31, 2008 at 08:26:00PM +0200, Thor Kristoffersen wrote:
> I've noticed that when I spin down XFS-mounted disks they spin up again
> shortly afterwards. I used iostat to monitor disk accesses to a mounted
> partition (with noatime) in single user mode. Apparently there is a write
> access to the partition approximately every 35 seconds, even if the
> partition is idle. As far as I can understand, since there is no data that
> needs to be flushed this must be done by an XFS daemon for some purpose.
>
> Is there any setting or mount option I can use to get rid of this behavior?
> I know I can freeze the filesystem, but then I have to remember to unfreeze
> it every time I need to write to it, so it's not an ideal solution.
Turn on laptop mode?
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
next prev parent reply other threads:[~2008-04-01 0:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-31 18:26 Does XFS prevent disk spindown? Thor Kristoffersen
2008-04-01 0:30 ` David Chinner [this message]
2008-04-01 6:00 ` Eric Sandeen
2008-04-01 18:20 ` Thor Kristoffersen
2008-04-05 14:01 ` Thor Kristoffersen
2008-04-07 1:05 ` Timothy Shimmin
2008-04-07 20:33 ` Thor Kristoffersen
2008-04-07 21:58 ` David Chinner
2008-04-08 5:53 ` Thor Kristoffersen
2008-04-09 4:11 ` [patch] " David Chinner
2008-04-09 21:32 ` Thor Kristoffersen
2008-04-09 23:02 ` David Chinner
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