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] GPLPV and LUN's on a storage

To: Klaus Steinberger <klaus.steinberger@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] GPLPV and LUN's on a storage
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Tue, 27 Oct 2009 11:28:16 +0200
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 27 Oct 2009 02:29:02 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4AE694AA.2050408@xxxxxxxxxxxxxxxxxxxxxx>
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: <4AE5B22F.6060305@xxxxxxxxxxxxxxxxxxxxxx> <20091026220741.GZ1434@xxxxxxxxxxx> <4AE694AA.2050408@xxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.13 (2006-08-11)
On Tue, Oct 27, 2009 at 07:35:22AM +0100, Klaus Steinberger wrote:
> 
> >Do you use phy:, file: or tap:aio: ? 
> 
> phy:
> 

Ok. Hmm.. that should be safe.

The pygrub problem is most probably different issue, since with pygrub
you have two different programs accessing the same storage: domU with
for example phy: driver, and then the dom0 userspace pygrub using normal
non-direct calls, which causes the problem.

Redhat fixed pygrub by making pygrub use O_DIRECT to bypass dom0 kernel
caches.

What's your dom0 OS/kernel/Xen? RHEL5.4?

-- Pasi


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users