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-devel

Re: [Xen-devel] [PATCH] Fix restore handling checks

To: Michal Novotny <minovotn@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Fix restore handling checks
From: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date: Tue, 22 Jun 2010 15:56:26 +0100
Cc: "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Delivery-date: Tue, 22 Jun 2010 08:01:52 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4C204D8C.3020303@xxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Newsgroups: chiark.mail.xen.devel
References: <C8456846.181EC%keir.fraser@xxxxxxxxxxxxx> <4C204D8C.3020303@xxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Michal Novotny writes ("Re: [Xen-devel] [PATCH] Fix restore handling checks"):
> Right, there's the exception for CD-ROMs according to the spec. I should 
> implement this as well but read-only IDE disk devices are not supported 
> according to the IDE specs.

I don't think this is a very good argument for not supporting them.

The Xen administrator should be able to present a guest with an IDE
disk and nevertheless prevent the guest from writing to it.

If that means that the guest administrator needs to be told
out-of-band that writes will not work, rather than having their kernel
automatically discover the read-only nature, then that's fine.  And if
the guest administrator doesn't do that and their kernel tries to
write and gets IDE errors then that is the correct consequence.

Ian.

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

<Prev in Thread] Current Thread [Next in Thread>