From: Samuel Thibault <samuel.thibault@eu.citrix.com>
To: Anton Burtsev <aburtsev@flux.utah.edu>
Cc: xen-devel@lists.xensource.com,
Mark Williamson <mark.williamson@cl.cam.ac.uk>
Subject: Re: Running netback/blkback in non-dom0 domains
Date: Mon, 21 Jul 2008 19:19:52 +0100 [thread overview]
Message-ID: <20080721181952.GL4501@implementation.uk.xensource.com> (raw)
In-Reply-To: <20080721181137.GA35417@bas.flux.utah.edu>
Anton Burtsev, le Mon 21 Jul 2008 12:11:37 -0600, a écrit :
> 2) If you export a block device from dom0 through a domU to the second
> domU, e.g.
>
> /dev/loop0 ----> /dev/sda2 ----> /dev/sda2
> dom0 domU(1) domU(2)
>
> device is not accessible in domU(2) with an error
> Buffer I/O error on device sda2, logical block 25840
> Xen complains:
> (XEN) grant_table.c:360:d0 Could not pin grant frame 99551
I guess it is because domU(1) tries to directly expose domU(2)'s data
pages to dom0, which it is not allowed to do.
Samuel
prev parent reply other threads:[~2008-07-21 18:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 22:02 Running netback/blkback in non-dom0 domains Anton Burtsev
2008-07-17 22:25 ` Samuel Thibault
2008-07-17 23:30 ` Mark Williamson
2008-07-21 18:11 ` Anton Burtsev
2008-07-21 18:19 ` Samuel Thibault [this message]
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