Re: I/O errors in Linux domUs

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Aug 31, 2009 at 11:21:08AM +1000, Christian Lerrahn wrote:
> Hi,
> I have a setup running where a NetBSD/amd64 dom0 hosts several Linux
> domUs. All domUs have image files not partitions. So far, this is just
> a test setup and I'm using images from stacklet.com (formerly
> jailtime.org). However, I tried the Debian Etch (not available any
> more) 64 bit, Debian Lenny 64bit and Gentoo 2008.0 64bit and always had
> problems with I/O errors. While the Etch image ran ok for a while, it
> started throwing errors when I moved it over to a freshly installed
> NetBSD 5.0.1 (before it was on an older NetBSD-CURRENT). The other 2
> would throw errors either on boot or as soon as I tried to edit a
> config file. All image files are ext3

Are you sure these images are not sparse files ? NetBSD doesn't
support a sparse file as backing store for virtual disks (this
is a vnd(4) limitation).

Comparing the outputs of ls -l and du on the image file should tell
you if it's sparse or not ...

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--