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

[Kevin Wolf <kwolf@redhat.com>]

Am 12.03.2012 13:09, schrieb Floris Bos / Maxnet:
> On 03/12/2012 12:57 PM, Kevin Wolf wrote:
>> Am 10.03.2012 20:56, schrieb Floris Bos:
>>> 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: kwolf@redhat.com
>>> Signed-off-by: Floris Bos<dev@noc-ps.com>
>> Oh, and now that I look at the actual patch, do we really want to add
>> the model=... option to -drive? I think just the qdev property may be
>> enough. When you need to set the option, you would need to use -device,
>> but it's not that hard.
> 
> Well, to me it makes sense to put it at the same places "serial" is, as 
> both options have quite similar functions: faking drive attributes.

-drive serial=... is older than -device, this is why it was okay back
then and why we still have to maintain it for compatibility. If
serial=... was a new patch today, I would probably be asking the same
question there.

Kevin