Messages in this thread | | | Subject | Re: md_raid: mdX_raid6 looping after sync_action "check" to "idle" transition | From | Yu Kuai <> | Date | Wed, 30 Aug 2023 09:36:53 +0800 |
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Hi,
在 2023/08/29 4:32, Dragan Stancevic 写道:
> Just a followup on 6.1 testing. I tried reproducing this problem for 5 > days with 6.1.42 kernel without your patches and I was not able to > reproduce it. > > It seems that 6.1 has some other code that prevents this from happening. >
I see that there are lots of patches for raid456 between 5.10 and 6.1, however, I remember that I used to reporduce the deadlock after 6.1, and it's true it's not easy to reporduce, see below:
https://lore.kernel.org/linux-raid/e9067438-d713-f5f3-0d3d-9e6b0e9efa0e@huaweicloud.com/
My guess is that 6.1 is harder to reporduce than 5.10 due to some changes inside raid456.
By the way, raid10 had a similiar deadlock, and can be fixed the same way, so it make sense to backport these patches.
https://lore.kernel.org/r/20230529132037.2124527-5-yukuai1@huaweicloud.com
Thanks, Kuai
> On 5.10 I can reproduce it within minutes to an hour. >
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