Re: [Qemu-devel] [PATCH v2] ide: Adds "model=s" option, allowing the user to override the default disk model name "QEMU HARDDISK"

[Floris Bos / Maxnet]

On 03/12/2012 02:48 PM, Markus Armbruster wrote:
> Floris Bos<address@hidden>  writes:
>
> > Some Linux distributions use the 
> > /dev/disk/by-id/scsi-SATA_name-of-disk-model_serial addressing scheme
> > when refering to partitions in /etc/fstab and elsewhere.
> > This causes problems when starting a disk image taken from an existing physical 
> > server under qemu,
> > because when running under qemu name-of-disk-model is always "QEMU HARDDISK"
> > This patch introduces a model=s option which in combination with the existing 
> > serial=s option can be used to
> > fake the disk the operating system was previously on, allowing the OS to boot 
> > properly.
> >
> > Cc: address@hidden
> > Signed-off-by: Floris Bos<address@hidden>
> At first glance:
>
> 1. IDE only, scsi-disk is missing.

Correct.
IDE support is easy.

Adding SCSI support is more complicated, because "model" and "serial" 
are not the only factors that can make up a  /dev/disk/by-id link
Could be a combination of 3 fields: vendor, model and serial.
But could also be based on another unique ascii or binary identifier 
provided by the drive through Vital Product Data page 83h.

--
Yours sincerely,

Floris Bos