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Re: [Xen-users] Error: Device 2049 (vbd) could not be connected. Backend

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Error: Device 2049 (vbd) could not be connected. Backend device not found.
From: Joe Warren-Meeks <joe.warren-meeks@xxxxxxxxxxxxx>
Date: Thu, 27 Apr 2006 14:43:59 +0100
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On 26 Apr 2006, at 13:26, Joe Warren-Meeks wrote:

Hey there,

I've installed xen 3 and xen-tools on my ubuntu server and all seems well, until I try to start a client domain. (running on Linux xenserver 2.6.12.6-xen #1 SMP Wed Feb 1 21:23:17 UTC 2006 i686 GNU/ Linux)

Bit of a follow-up. If I try to start the DomU, it initally errors as so:

root@xenserver:/etc/xen# xm create -c squid1.cfg
Using config file "squid1.cfg".
Error: Device 2049 (vbd) could not be connected. Backend device not found.

and then shows up as paused in 'xm list'

If I then attach a console to it, then unpause I see the following error at the end:

VFS: Cannot open root device "sda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- block(0,0)

I've tried adding /dev/ nodes using MAKEDEV in both the Dom0 and DomU and tried changing sda to hda, to no avail.

Anyone got a pointer to where I can start looking?

Cheers

 -- joe.

Joe Warren-Meeks                       T: +44 (0) 208 962 0007
Aggregator Limited                     M: +44 (0) 7789 176078
Unit 62/63 Pall Mall Deposit           E: joe.warren-meeks@xxxxxxxxxxxxx
124-128 Barlby Road, London W10 6BL
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