Re: [PATCH] fix free of event channel in blkfront

[tgh <tianguanhua@ncic.ac.cn>]

Thank you for reply
I try to do it under your guide as follows
# xm block-attach dom6 file:/vm1/template/tp.img sdb2 w
[root@genode012 vmcserver]# xm block-list dom1
Vdev BE handle state evt-ch ring-ref BE-path
2049 0 0 4 7 8 /local/domain/0/backend/vbd/102/2049
2050 0 0 4 8 815 /local/domain/0/backend/vbd/102/2050

and xm block-detach can work
but xm console dom1, then there is not the new disk in dom1
what is wrong with it?



that is the log in /var/log/xen/xend.log as follows:
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:110) DevController:
writing {'backend-id': '0', 'virtual-device': '2050''
, 'device-type': 'disk', 'state': '1', 'backend':
'/local/domain/0/backend/vbd/102/2050'} to /local/domain/102/device/vbd/2055
0.
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:112) DevController:
writing {'domain': 'dom1', 'frontend': '/local/domaii
n/102/device/vbd/2050', 'dev': 'sda2', 'state': '1', 'params':
'/vm1/template/tp1.img', 'mode': 'w', 'online': '1', 'frontendd
-id': '102', 'type': 'file'} to /local/domain/0/backend/vbd/102/2050.
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:149) Waiting for 2050.
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:464)
hotplugStatusCallback /local/domain/0/backend/vbd/102/2050/hotplug--
status.
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:464)
hotplugStatusCallback /local/domain/0/backend/vbd/102/2050/hotplug--
status.
[2007-02-01 14:08:47 xend 6460] DEBUG (DevController:478)
hotplugStatusCallback 1.


could you give me help
Thanks in advance










Kasai Takanori 写道:
> Hi
>
>> I am using the xen-3.0.3 on paravirtualVM
>> and I try to use xm block-attach dom6 /vm1/tp.img sda2 w
>> It seems to be ok, no error ,
>> but in the dom6 there is no sda2
>> and xm block-detach dom6 2050,it does not work
>> and xm block-list dom6 as follows ,
>
> The block-attach command seems to have failed because your use is wrong.
> # xm block-attach dom6 /vm1/tp.img sda2 w
> ^^^^^^^^^^^
> When backend device is a file, it is necessary to specify file.
> Moreover, when it is a physical device, it is necessary to specify phy.
>
> The example is as follows.
> # xm block-attach dom6 file:/vm1/tp.img sda2 w
> # xm block-attach dom6 phy:/dev/sdb sda2 w
>
> The block-detach command works correctly, if the block-attach command
> succeeds.
>
> Best Regards,
>
> -- 
> Takanori Kasai
>
>
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