[Xen-devel] File-backed VBDs in 2.0.6?

[Bob Tanner <tanner@xxxxxxxxxxxxx>]

Anyone able to get file-backed VBDs working in 2.0.6 under Debian (both sid or 
sarge)?

I have DOM0 up and running but cannot get any other DOM working -when- using 
file-backed VBDs. Weird part is using LVM-backed VBDs works.

/etc/xen/auto/xen.conf snippets:

# I export the file-backed VBDs like this:
disk = [ 'file:/var/xen/root,hda1,w' ]

# Set root device.
root = "/dev/hda1"

# xm create -c /etc/xen/auto/xen.conf vmid=1
************ REMOTE CONSOLE: CTRL-] TO QUIT ********
Linux version 2.6.11-1-xen2.6.0-d0 (me@xen) (gcc version 3.3.6 (Debian 
1:3.3.6-6)) #1 Tue Jun 21 17:15:50 CDT 2005
<snip>
Kernel command line:  ip=:1.2.3.4::::eth0:dhcp root=/dev/hda1
<snip>
xen_blk: Initialising virtual block device driver
VFS: Cannot open root device "hda1" 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)

Searching the mailing lists there are discussion regarding devfs being the 
problem, and devfs=nomount doesn't fix the problem and you have to unset the 
option in the kernel and recompile.

Tried that and get the same problem of not able to open root device.

Any recommendations on where else to look for more troubleshooting tips?

-- 
Bob Tanner <tanner@xxxxxxxxxxxxx>          | Phone : (952)943-8700
http://www.real-time.com, Minnesota, Linux | Fax   : (952)943-8500
Key fingerprint = AB15 0BDF BCDE 4369 5B42  1973 7CF1 A709 2CC1 B288

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