Re: PROBLEM: repeatable lockup on RAID-6 with LUKS dm-crypt on NVMe devices when rsyncing many files

[Yu Kuai <yukuai1@huaweicloud.com>]

Hi,

在 2024/11/05 18:15, Christian Theune 写道:
> Hi,
> 
> 
> after about 2 hours it stalled again. Here’s the full blocked process dump. (Tell me if this isn’t helpful, otherwise I’ll keep posting that as it’s the only real data I can show)

This is bad news :(

While reviewing related code, I come up with a plan to move bitmap
start/end write ops to the upper layer. Make sure each write IO from
upper layer only start once and end once, this is easy to make sure
they are balanced and can avoid many calls to improve performance as
well.

However, I need a few days to cooke a patch after work.

Thanks,
Kuai