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

From	Ming Lei <ming.lei@redhat.com>
Newsgroups	linux.kernel
Subject	Re: I/O hangs after resuming from suspend-to-ram
Date	2017-08-30 16:40 +0200
Message-ID	<ukcjT-12T-9@gated-at.bofh.it> (permalink)
References	(4 earlier) <uk0LM-2mC-5@gated-at.bofh.it> <uk3zY-484-9@gated-at.bofh.it> <uk4w1-4Jz-7@gated-at.bofh.it> <uk6et-5Ol-1@gated-at.bofh.it> <uk8T0-7g3-13@gated-at.bofh.it>
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Hi,

On Wed, Aug 30, 2017 at 12:58:21PM +0200, oleksandr@natalenko.name 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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Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-26 12:40 +0200
  Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-26 12:50 +0200
    Re: I/O hangs after resuming from suspend-to-ram Martin Steigerwald <martin@lichtvoll.de> - 2017-08-26 13:30 +0200
      Re: I/O hangs after resuming from suspend-to-ram Wols Lists <antlists@youngman.org.uk> - 2017-08-26 19:30 +0200
        Re: I/O hangs after resuming from suspend-to-ram Martin Steigerwald <martin@lichtvoll.de> - 2017-08-26 21:40 +0200
    Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-26 15:40 +0200
    Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-27 08:10 +0200
      Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-27 09:50 +0200
        Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-28 15:00 +0200
          Re: I/O hangs after resuming from suspend-to-ram Martin Steigerwald <martin@lichtvoll.de> - 2017-08-28 15:20 +0200
            Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-28 15:40 +0200
          Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-28 20:30 +0200
            Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-29 02:30 +0200
              Re: I/O hangs after resuming from suspend-to-ram Oleksandr Natalenko <oleksandr@natalenko.name> - 2017-08-29 18:00 +0200
                Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-30 04:20 +0200
                Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-30 07:20 +0200
                Re: I/O hangs after resuming from suspend-to-ram oleksandr@natalenko.name - 2017-08-30 08:20 +0200
                Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-30 10:10 +0200
                Re: I/O hangs after resuming from suspend-to-ram oleksandr@natalenko.name - 2017-08-30 13:00 +0200
                Re: I/O hangs after resuming from suspend-to-ram Ming Lei <ming.lei@redhat.com> - 2017-08-30 16:40 +0200

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