after changing your kernel config
CONFIG_XEN_BLKDEV_TAP=m
config should be
disk = [ 'tap:aio:/var/xen/domains/ac/disk.img,xvda1,w',
'tap:aio:/var/xen/domains/ac/swap.img,xvda2,w' ]
update your fstab of domU too.
for me works fine with this config.
--------------------
Itamar Reis Peixoto
e-mail: itamar@xxxxxxxxxxxxxxxx
msn: itamarjp@xxxxxxxxxxxxx
skype: itamarjp
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----- Original Message -----
From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
To: "Jonathan Selander" <jonathan@xxxxxxxxx>
Cc: <xen-users@xxxxxxxxxxxxxxxxxxx>
Sent: Saturday, April 14, 2007 8:35 PM
Subject: Re: [Xen-users] blktap on debian
On Sat, Apr 14, 2007 at 11:54:06PM +0200, Jonathan Selander wrote:
Hello,
I run xen 3.0.3 on Debian 4.0 and so far I've got 5 guests. I've read in
the user documentation that it's better to use blktap than loopback,
because of performance reasons, so i decided to switch to it. However,
the root device isn't found by the guest system. I read something about
CONFIG_XEN_BLKDEV_TAP being needed in the kernel for it to work, is that
true? I have
CONFIG_XEN_BLKDEV_BACKEND=y
# CONFIG_XEN_BLKDEV_TAP is not set
CONFIG_XEN_BLKDEV_FRONTEND=y
Yeah, I believe it should be set to
CONFIG_XEN_BLKDEV_TAP=m
If it was working, you'd also get a 'blktapctrl' daemon spawned by Xen. If
you look at syslog you'll probably find blktapctrl trying to start and
failing to initialize if blktap support was missing in kernel.
The guest config disk line looks like this:
disk = [ 'tap:aio:/var/xen/domains/ac/disk.img,sda1,w',
'tap:aio:/var/xen/domains/ac/swap.img,sda2,w' ]
That's the correct config file syntax.
Dan.
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