From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen.hemminger@vyatta.com>
Subject: Re: btrfs day 1
Date: Thu, 14 Aug 2008 09:19:37 -0700
Message-ID: <20080814091937.470f42ed@speedy>
References: <20080814001120.4f1fea7a@speedy>
	<1218709514.15342.370.camel@think.oraclecorp.com>
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Cc: linux-btrfs@vger.kernel.org
To: Chris Mason <chris.mason@oracle.com>
Return-path: <linux-btrfs-owner@vger.kernel.org>
In-Reply-To: <1218709514.15342.370.camel@think.oraclecorp.com>
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On Thu, 14 Aug 2008 06:25:14 -0400
Chris Mason <chris.mason@oracle.com> wrote:

> On Thu, 2008-08-14 at 00:11 -0700, Stephen Hemminger wrote:
> > Setup new 60G home partition on laptop as a real life test of 0.16.
> > Using Ubuntu standard kernel 2.6.24-19-generic on i386
> > 
> 
> Thanks for giving things a try
> 
> > I notice that during normal (busy time) everything seems fine, but after going away
> > for a while and coming back, it seems sluggish. Lots of errors in log:
> > 
> >  btrfs csum failed ino 139988 off 4583424 csum 3821684403 private 0
> >  btrfs csum failed ino 139988 off 4579328 csum 3233603900 private 0
> >  btrfs csum failed ino 139988 off 4575232 csum 306171610 private 0
> > 
> > Maybe it isn't handleing spindown properly? or something like that?
> 
> Were these the only errors in the log, or did you have other errors
> about not being able to find specific csums?
> 
> What does 'going away for a while and coming back' include?

1. Start kernel build
2. Come back 2+ hrs later

(So problem could be in step 1 or 2)

All failures are on the same inode