From: John Morrissey <jwm@horde.net>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: kvm@vger.kernel.org
Subject: Re: qcow2 corruption?
Date: Thu, 8 Jan 2009 22:42:18 -0500 [thread overview]
Message-ID: <20090109034218.GA5921@boost.horde.net> (raw)
In-Reply-To: <49666318.3050706@codemonkey.ws>
On Thu, Jan 08, 2009 at 02:33:28PM -0600, Anthony Liguori wrote:
> John Morrissey wrote:
> >I'm encountering what seems like disk corruption when using qcow2 images,
> >created with 'kvm-img create -f qcow2 image.qcow2 15G'.
> >
> >A simple test case is to use the Debian installer (I'm using the lenny
> >rc1 images from http://www.debian.org/devel/debian-installer/) to install
> >a new domain. The qcow2 file on disk grows due to the mkfs(8) activity,
> >then the installer faults while trying to mount the root filesystem
> >(Invalid argument). 'fdisk -l' shows that the partition table just
> >created by the installer is gone.
>
> There are patches that touch the block layer. Please try to reproduce
> on vanilla kvm. I don't trust the debian patches.
Couldn't reproduce this with Debian packaging minus its patch for
CVE-2008-0928 (taken from Fedora FWIW), which is the only one touching the
block layer.
Upon further scrutiny, I realized I pooched updating the patch for KVM 82.
The value for the BDRV_O_AUTOGROW constant introduced in that patch collides
with a new BDRV_ constant introduced between KVM 79 and 82. Changing the
constant's value (Fedora project has an updated patch, too) fixes this.
Ryan, this seems to fix the SCSI BUGging, too. I figure you won't want to
pursue that further?
Sorry for the bother, guys.
john
--
John Morrissey _o /\ ---- __o
jwm@horde.net _-< \_ / \ ---- < \,
www.horde.net/ __(_)/_(_)________/ \_______(_) /_(_)__
next prev parent reply other threads:[~2009-01-09 3:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-26 21:00 BUG() with SCSI-interfaced disk images John Morrissey
2009-01-07 20:19 ` John Morrissey
2009-01-07 22:34 ` Ryan Harper
2009-01-08 2:13 ` John Morrissey
2009-01-08 14:01 ` Ryan Harper
2009-01-08 18:15 ` John Morrissey
2009-01-08 19:24 ` qcow2 corruption? John Morrissey
2009-01-08 20:10 ` Ryan Harper
2009-01-08 20:16 ` John Morrissey
2009-01-08 20:33 ` Anthony Liguori
2009-01-09 3:42 ` John Morrissey [this message]
2009-01-09 13:34 ` Ryan Harper
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