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: Disk naming (Was Re: [Xen-devel] [PATCH] Guest bootloadersupport [1/

To: "Jeremy Katz" <katzj@xxxxxxxxxx>
Subject: RE: Disk naming (Was Re: [Xen-devel] [PATCH] Guest bootloadersupport [1/2])
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Thu, 14 Apr 2005 22:13:25 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 14 Apr 2005 21:13:15 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcVBM/H6h9XQ8h65To+ksLVhRV90gAAAfsjg
Thread-topic: Disk naming (Was Re: [Xen-devel] [PATCH] Guest bootloadersupport [1/2])
 
> Things start getting odd if you start mixing anything that 
> natively shows up as scsi with a vbd scsi, though, don't 
> they?  

Yep, it's a bit skank. I've had this before when I had a guest that was
moutning an iscsi target directly, and also a partition on the local
scsi disk via a vbd. I had to import the local scsi disk partition as
/dev/hda1 as the iscsi needed the sda.

I think we still register the xda major/minor for such eventualities.

Users really like to be able to boot the same file system both native
and on Xen without modifications, so I think this requirement wins out
for the moment.

Perhaps in preparation, vendors could make their installers 'xda' aware?

[Hmm, we should probably officially register the major also. Anyone know
how to go about this? Or better, do it for us?]

> And upstream has been fairly resistant to other !scsi 
> or !ide devices sitting on those devices.  I've had this 
> argument with Jeff Garzik before about a few of the esoteric 
> SATA drivers that don't even pretend to be scsi.  And things 
> like partitioning tools and hardware probing will start 
> showing more problems with ioctls not working as that starts 
> to show up.

Yep, we might hit resistance. Let's hope no-one reads our drivers too
closely :-)

Ian


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

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