Hello,
On 29. 07. 20 23:06, Guoqing Jiang wrote:
> On 7/22/20 10:47 PM, Vojtech Myslivec wrote:
>> 1. What should be the cause of this problem?
>
> Just a quick glance based on the stacks which you attached, I guess it
> could be
> a deadlock issue of raid5 cache super write.
>
> Maybe the commit 8e018c21da3f ("raid5-cache: fix a deadlock in superblock
> write") didn't fix the problem completely. Cc Song.
>
> And I am curious why md thread is not waked if mddev_trylock fails, you can
> give it a try but I can't promise it helps ...
Just to make sure we use RAID 6 across 6 HDD (I am not sure how RAID 5
implementation relates to RAID 6).
