Xen users - Apr 2013 - how to know which the thread of blkback for the blkfront in the domain0

Hi all,


I want to use ionice command change the priority  of threads of blkback(in
domain0) for each corresponding blkfront . However, I do not know how to
recognize which is the thread for the corresponding blkfront using ps aux.
Anybody can give me some advice? Thanks in advance!

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On Wed, 2013-04-10 at 14:59 +0100, 张伟 wrote:
> Hi all,
> 
> 
> I want to use ionice command change the priority  of threads of
> blkback(in domain0) for each corresponding blkfront . However, I do
> not know how to recognize which is the thread for the corresponding
> blkfront using ps aux. Anybody can give me some advice? Thanks in
> advance!
Its should be named according to
         snprintf(buf, TASK_COMM_LEN, "blkback.%d.%s",
blkif->domid, devname);
so I'd have thought it would be pretty obvious in ps aux.

Ian.




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Thank you very much! Just now I have found it, blkbak.vmid.xvda from the ps aux
list.








在 2013-04-10 22:43:02，"Ian Campbell" <Ian.Campbell@citrix.com>
写道：
>On Wed, 2013-04-10 at 14:59 +0100, 张伟 wrote:
>> Hi all,
>> 
>> 
>> I want to use ionice command change the priority  of threads of
>> blkback(in domain0) for each corresponding blkfront . However, I do
>> not know how to recognize which is the thread for the corresponding
>> blkfront using ps aux. Anybody can give me some advice? Thanks in
>> advance!
>
>Its should be named according to
>         snprintf(buf, TASK_COMM_LEN, "blkback.%d.%s",
blkif->domid, devname);
>so I'd have thought it would be pretty obvious in ps aux.
>
>Ian.
>
>
>

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