Re: [Xen-devel] Problems with loopback and sda1

["Mark A. Williamson" <mark.williamson@xxxxxxxxxxxx>]

> With:
> disk = [ 'phy:loop0,xda1,w', 'phy:sda1,sda1,r' ]
> root = "/dev/xda1 ro"
>
> I get error msg:
>  >>error begin
>
> VFS: Cannot open root device "xda1" or unknown-block(2,0)
> ÂÂÂPlease append a correct "root=" boot option
> ÂÂÂKernel panic: VFS: Unable to mount root fs on unknown-block(2,0)

The xda devices got removed.  Any sd* or hd* device node should work instead 
though.

Did you realise you can now specify file:/path/to/file as the source device 
instead of running losetup manually and using phy:loop0?

HTH,
Mark

>  >>error end
>
> Does Xen deny use of anything else than logical sda1 for HD? When my
> physical HD is sda1, how can I use another logical drive for my
> loopback?
>
> To save space I want to read-only mount my pysical HD from the
> loopbacks.
> (If I try to mount sda1 now, I mount the loopback, not the pysical HD)
>
> Cheers,
> Rune


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