Re: [Xen-users] making scsi disks visible to RHEL 5 guest

[K Mehta <kiranmehta1981@xxxxxxxxx>]

3rd bullet:
 If i make scsi3 disks visible to guest directly using iscsi(not through Dom0),
will guest be expected to see it as scsi3 ? (I think it should !!!)


On Mon, Jan 16, 2012 at 5:41 PM, K Mehta <kiranmehta1981@xxxxxxxxx> wrote:
> Ok.
>
> 1. So does it mean that installing some recent version of Redhat/SuSE
> will make (fibre channel) scsi3 disks visible
>   as scsi3 in the guest
>
> 2. Or does it mean that guest OS will never be able to see fibre
> channel scsi3 disks (made visible from Dom0) as scsi3 whatever OS
> version I install ?
>
>
> 3. If i make scsi3 disks visible to guest directly (not through Dom0),
> will guest be expected to see it as scsi3 ? (I think it should !!!)
>
>
> Thanks,
>  kiran
>
> On Mon, Jan 16, 2012 at 5:19 PM, Fajar A. Nugraha <list@xxxxxxxxx> wrote:
>> On Mon, Jan 16, 2012 at 6:32 PM, K Mehta <kiranmehta1981@xxxxxxxxx> wrote:
>>> Simon.. thanks for your reply.
>>>
>>> The problem is that scsi commands are failing on xvd devices.
>>> Few hours ago i renamed xvd devices are sd* devices in vm config file.
>>>  scsi inquiry, TUR and few other commands are working on those sd*
>>> devices in the guest. However, scsi reservation  commands (executed
>>> using sg util) are failing with error "bad field in cdb including
>>> unsupported service action".
>>
>> That is expected behavior.
>>
>>>
>>> Are some additional steps required to make scsi3 disks visible as
>>> scsi3 in the guest. Or we just need to include line like this
>>> ->'phy:/dev/mapper/360060e80056509000000650900000260,xvdf,w!'     in
>>> the config file for each scsi3 disk..????
>>
>> Nope.
>>
>> There's this: http://wiki.xen.org/wiki/Paravirtualized_SCSI
>> but AFAIK it's not available on RHEL5's kernel and xen version. You
>> MIGHT find it easier to use iscsi (export on dom0, import on domU)
>> with support for scsi passthru (e.g. tgt)
>>
>> --
>> Fajar

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