Re: I/O hangs after resuming from suspend-to-ram

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Hi,

On Wed, Aug 30, 2017 at 12:58:21PM +0200, oleksandr@xxxxxxxxxxxxxx wrote:
> Hi.
> 
> So, current summary:
> 
> 1) first patch + debug patch: I can reproduce the issue in wild, but not
> with pm_test set;

That is interesting, since I always test via pm_test.

> 2) first patch + debug patch + second patch: I cannot reproduce issue at
> all, neither with "none", nor with "mq-deadline".
> 
> Thus, "blk-mq: align to legacy path for implementing blk_execute_rq" +
> "blk-mq: add requests in the tail of hctx->dispatch" look like a proper fix.
> Thanks for that!

That is great, will prepare a formal one for merge.

> 
> > I setup dm-crypt on /dev/md0 directly, could you show me how to setup
> > lvm on raid10?
> 
> If still relevant, here is a layout:

Looks not relevant, just because I use pm_test.

> 
> ===
> sda                 8:0    0    8G  0 disk
> |-sda1              8:1    0  128M  0 part   /boot/EFI
> `-sda2              8:2    0  7.9G  0 part
>   `-md0             9:0    0  7.9G  0 raid10
>     `-system-root 253:0    0  7.9G  0 lvm    /
> sdb                 8:16   0    8G  0 disk
> |-sdb1              8:17   0  128M  0 part
> `-sdb2              8:18   0  7.9G  0 part
>   `-md0             9:0    0  7.9G  0 raid10
>     `-system-root 253:0    0  7.9G  0 lvm    /
> ===
> 
> Anything else you'd like /me to test?

You have done enough, thanks a lot for your report and test!


-- 
Ming



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