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Re: xfssyncd and disk spin down

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: xfssyncd and disk spin down
From: Petre Rodan <petre.rodan@xxxxxxxxxx>
Date: Mon, 27 Dec 2010 19:19:39 +0200
Cc: xfs@xxxxxxxxxxx
In-reply-to: <20101227140750.GB24828@dastard>
References: <20101223165532.GA23813@xxxxxxxxxxxxxxxx> <20101227021904.GA24828@dastard> <20101227061629.GA2275@xxxxxxxxxxxxxxxxxx> <20101227140750.GB24828@dastard>
User-agent: Mutt/1.5.21 (2010-09-15)
Hello Dave,

On Tue, Dec 28, 2010 at 01:07:50AM +1100, Dave Chinner wrote:
> Turn on the XFS tracing so we can see what is being written every
> 36s.  When the problem shows up:
> 
> # echo 1 > /sys/kernel/debug/tracing/events/xfs/enable
> # sleep 100
> # cat /sys/kernel/debug/tracing/trace > trace.out
> # echo 0 > /sys/kernel/debug/tracing/events/xfs/enable
> 
> And post the trace.out file for us to look at.

attached.

you can disregard all the lvm partitions ('dev 254:.*') since they are on a 
different drive, probably only 8:17 is of interest.

bye,
peter

Attachment: trace.out.bz2
Description: BZip2 compressed data

Attachment: pgpaR0CCoPp3A.pgp
Description: PGP signature

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