add stop_scrub command for ceph

add stop_scrub command for ceph

[Xinze Chi]

hi ceph:

    Currently, there is not a command which can stop scrubbing when
the pg is doing scrub or deep
scrub. What about add a command to support it ? I think this s every
used for system administrator.

     I have add a issue to track it. http://tracker.ceph.com/issues/11202.
-- 
Regards,
xinze

Re: add stop_scrub command for ceph

[Loic Dachary]

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Hi,

I like the idea of a fine grain scrub control :-)

Cheers

On 23/03/2015 08:47, Xinze Chi wrote:
> hi ceph:
> 
>     Currently, there is not a command which can stop scrubbing when
> the pg is doing scrub or deep
> scrub. What about add a command to support it ? I think this s every
> used for system administrator.
> 
>      I have add a issue to track it. http://tracker.ceph.com/issues/11202.
> 

-- 
Loïc Dachary, Artisan Logiciel Libre


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Re: add stop_scrub command for ceph

[Sage Weil]

On Mon, 23 Mar 2015, Xinze Chi wrote:
> hi ceph:
> 
>     Currently, there is not a command which can stop scrubbing when
> the pg is doing scrub or deep
> scrub. What about add a command to support it ? I think this s every
> used for system administrator.
> 
>      I have add a issue to track it. http://tracker.ceph.com/issues/11202.

This sounds like the right solution to me.

I think the main thing we need in order to ensure this works reliably is 
to modify ceph-qa-suite.git/tasks/thrasosds.py and/or ceph_manager.py so 
that it periodically sets/unsets the noscrub flags so that we exercise the 
new cancellation code path.  Do you mind preparing a patch for that too?

Thanks!
sage