Re: [Xen-users] domU on an external disk

To:	xen-users@xxxxxxxxxxxxxxxxxxx
Subject:	Re: [Xen-users] domU on an external disk
From:	"Todd Deshane" <deshantm@xxxxxxxxx>
Date:	Mon, 21 Jan 2008 10:23:44 -0500
Cc:	J.Witvliet@xxxxxxxxx, John Maclean <john@xxxxxxxxxxx>
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On Jan 21, 2008 3:42 AM, <J.Witvliet@xxxxxxxxx> wrote:

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto: xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of John Maclean
Sent: Thursday, December 27, 2007 3:41 PM
To: xen-users
Subject: [Xen-users] domU on an external disk

I intend to use an external disk for some domUs to take the load of the
main disk on this laptop. pv, vg and lv have been created. How does one
tell xen to use the external disk?

disk = '[phy:/dev/name_of_external_vg/logical_vol,xvda,w] ?

Hi,

Two points.
With external disks in the sense of nfs or iscsi, no problem, but when
using usb, be shure that the device get the same device-name each time.

You can use the udev by-uuid entry for this. Look at: /dev/disk/by-uuid/*

-Todd

Furthermore even when using usb2, the overal performance isn't great. I
would consider an etherdisk mounted with nfs...

hw

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Re: [Xen-users] domU on an external disk