Re: [Qemu-devel] [PATCH 6/9] vhost-scsi: new device supporting the tcm_vhost Linux kernel module

[Wenchao Xia <xiawenc@linux.vnet.ibm.com>]

于 2013-5-28 16:33, Asias He 写道:
> On Tue, May 28, 2013 at 10:01:14AM +0200, Paolo Bonzini wrote:
>> Il 28/05/2013 09:13, Wenchao Xia ha scritto:
>>>>> From: Nicholas Bellinger <nab@linux-iscsi.org>
>>>>>
>>>>> The WWPN specified in configfs is passed to "-device vhost-scsi-pci".
>>>>> The tgpt field of the SET_ENDPOINT ioctl is obsolete now, so it is not
>>>>> available from the QEMU command-line.  Instead, I hardcode it to zero.
>>>>>
>>> Hi, Paolo
>>>    Any document about how to config it correctly in configfs, before
>>> invoking qemu with the WWPN number?
>>
>> Unfortunately no, but vhost-scsi doesn't have many knobs (unlike
>> iSCSI for example) so it's quite simple.  Here is an example:
>>
>> cd /sys/kernel/config/target
>> mkdir -p core/fileio_0/fileio
>> echo 'fd_dev_name=/home/pbonzini/test.img,fd_dev_size=5905580032' > core/fileio_0/fileio/control
>> echo 1 > core/fileio_0/fileio/enable
>> mkdir -p vhost/naa.600140554cf3a18e/tpgt_0/lun/lun_0
>> cd vhost/naa.600140554cf3a18e/tpgt_0
>> ln -sf ../../../../../core/fileio_0/fileio/ lun/lun_0/virtual_scsi_port
>> echo naa.60014053226f0388 > nexus
>>
>> The "nexus" value is the initiator WWN.  naa.600140554cf3a18e is the
>> target WWN that you have to pass to "-device vhost-scsi-pci".
>>
>> Paolo
>
> For me, I always use targetcli utils instead of the sysfs interface.
> targetcli in F18 has vhost support now.
>
   Thanks very much for above information, I'll try it for test.

-- 
Best Regards

Wenchao Xia