Re: How to figure out which block device has been created by tcm_loop?

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On Mon, Sep 28, 2015 at 4:34 PM, Andy Grover <agrover@xxxxxxxxxx> wrote:
> On 09/28/2015 04:19 PM, Sheng Yang wrote:
>>
>> Thank you Nicholas.
>>
>> But seems probably due to the TCMU I am using, I cannot get the VPD
>> page of the device. Is it the VPD page implemented per backstore, or
>> it should be there but I setup something wrong?
>>
>> root@kernel-dev:~# sg_inq /dev/sda
>> standard INQUIRY:
>>    PQual=0  Device_type=0  RMB=0  version=0x05  [SPC-3]
>>    [AERC=0]  [TrmTsk=0]  NormACA=0  HiSUP=0  Resp_data_format=2
>>    SCCS=0  ACC=0  TPGS=0  3PC=0  Protect=0  [BQue=0]
>>    EncServ=0  MultiP=0  [MChngr=0]  [ACKREQQ=0]  Addr16=0
>>    [RelAdr=0]  WBus16=0  Sync=0  Linked=0  [TranDis=0]  CmdQue=1
>>      length=36 (0x24)   Peripheral device type: disk
>>   Vendor identification: LIO-ORG
>>   Product identification: TCMU device
>>   Product revision level: 0002
>> root@kernel-dev:~# sg_inq --vpd /dev/sda
>> VPD INQUIRY, page code=0x00:
>>     [PQual=0  Peripheral device type: disk]
>>     Supported VPD pages:
>> root@kernel-dev:~# sg_vpd -i /dev/sda
>> Device Identification VPD page:
>> invalid VPD response; probably a STANDARD INQUIRY response
>> fetching VPD page failed
>
>
> Hi Sheng,
>
> TCMUv2 passes all opcodes to tcmu-runner, and tcmu-runner doesn't yet
> implement vpd83, although it really should because it's mandatory in the
> spec.
>
> I've opened this issue:
>
> https://github.com/agrover/tcmu-runner/issues/7
>
> and will work to resolve this as soon as possible.
>
> Thanks -- Regards -- Andy
>

That's quick! Thank you Andy!!

--Sheng
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