Re: [PATCH v4 2/2] md/cluster: fix deadlock when node is doing resync job

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On 11/30/20 10:31 AM, Guoqing Jiang wrote:
> 
> 
> On 11/19/20 12:41, Zhao Heming wrote:
>> mkfs.xfs /dev/md0
> 
> This would make people think clustered raid can co-work with local fs well ...

This issue came from real customer issue. For easy understanding, I simplify the scenario.
The real usage is customer exports clustered array to only one virtual-machine as storage (xfs on it).
The host side follows clustered rules, use clustered lvm volumes on top of clustered array.

> 
>> mdadm --manage --add /dev/md0 /dev/sdi
>> mdadm --wait /dev/md0
>> mdadm --grow --raid-devices=3 /dev/md0
>>
>> mdadm /dev/md0 --fail /dev/sdg
>> mdadm /dev/md0 --remove /dev/sdg
>> mdadm --grow --raid-devices=2 /dev/md0
> 
> The above is good fit for a new test case in mdadm.
> 
A new test case may name: 02r1_Grow_add_remove
When I have time, I will do this job.

> Thanks,
> Guoqing
> 

Thanks.




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