WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] Xen and QCOW problems

To: J Nb <j_nwb@xxxxxxxxx>
Subject: Re: [Xen-users] Xen and QCOW problems
From: Grant McWilliams <grantmasterflash@xxxxxxxxx>
Date: Tue, 5 Jan 2010 09:33:01 -0800
Cc: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Tue, 05 Jan 2010 09:34:06 -0800
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:cc:content-type; bh=1JRThLuOdlqerQ3iGAn2tNxDfYIvmH0xZf/jBHAXxAk=; b=CwALH3c9WL0RJEAFm9e0kL+Y46cLIT+GxwU6DnrZ4qwbd8nyffym/V/u/IwT7ylf5q Z7uoj9XkDEhlOlKQMSSddfi1thCxAEZZ6i/YtVF+Dq2MI3AaODgRWVyvvyLIb9IPiuvo RE6cNfGRaDQNsaZuM6JWuXxcVArl0BVi031mE=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; b=wTfMZn1Y815JVGw6mJJ6wBnZRLU5PamNwNOlci+6sULAoD7QvvLZJVJY72YjHp6W9P VEzlNi0U0C43u9Sn0Nz0lTKthp8lW97XeOQmuHLoQnAAfG2iA+5h/AcPxVbc9LGrr2fw 6EBPn6N9OcDS2mxIQKJ0LLajtW5UZZpO6SM/g=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <189349.66037.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <189349.66037.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx

On Sun, Jan 3, 2010 at 5:58 PM, J Nb <j_nwb@xxxxxxxxx> wrote:
Hi
  I am trying to use qcow2 disks. Environment is SLES 10 SP2 dom0 and tried Ubuntu and CentOS domUs.

Initially used qemu-img to create disks .. but did not work. The installer did not recognize any disks.

Then ran in to the following article that suggested to use qcow-create and the PV VM started. But is very... slow. It took more than 30 min to format 5G. And installation is going over 10 hrs. now.!

For HVM vm, The partitioning dialog does not show any disks! The disk entry is as follows.


disk=['tap:qcow:/mnt/storage/vm_disks/hvm_qcow.qcow,xvda,w', 'file:/mnt/storage/iso/CentOS-5.4-x86_64-bin-DVD.iso,hdc:cdrom,r']


Tried tap:qcow, file as protocol and xvda, hda as disks but nothing seem to work.

Any ideas ?
Is anyone using qcow2 format their daily use ? or in production ?
I am trying to standardize on this so I can take snapshots.
Any help is appreciated.

-nb



No matter what the documentation says Qcow/Qcow2 doesn't really work in Xen. Even if you manage to get it to boot of an image there's no backing store support so why use it? I wish they'd either fix it or remove any reference to tap:qcow so some of us don't waste weeks googleing and testing to try to get it functional.


Grant McWilliams

Some people, when confronted with a problem, think "I know, I'll use Windows."
Now they have two problems.
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
<Prev in Thread] Current Thread [Next in Thread>