Groups > linux.debian.bugs.dist > #910518

Bug#904441: linux-image-4.17.0-1-amd64: system disk stopped during boot

From	Julian Calaby <julian.calaby@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#904441: linux-image-4.17.0-1-amd64: system disk stopped during boot
Date	2018-07-31 12:40 +0200
Message-ID	<whAen-3we-29@gated-at.bofh.it> (permalink)
References	(1 earlier) <wf3PA-5uT-7@gated-at.bofh.it> <wg9gd-7yi-1@gated-at.bofh.it> <wgQOe-Qd-17@gated-at.bofh.it> <wf3PA-5uT-7@gated-at.bofh.it> <wgQOe-Qd-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Tomas,

On Sun, Jul 29, 2018 at 7:52 PM Tomas Janousek <tomi@nomi.cz> wrote:
>
> Hi Julian,
>
> On Fri, Jul 27, 2018 at 09:31:42PM +1000, Julian Calaby wrote:
> > > Does adding the kernel parameter "ahci.mobile_lpm_policy=1" avoid this?
> >
> > No, booting with that parameter makes no difference.
>
> Can you try "dm_mod.use_blk_mq=0 scsi_mod.use_blk_mq=0" as well?

Disabling multi-queue fixes it and allows it to boot.

I have not tested this in combination with the AHCI LPM policy change
Ben suggested as just disabling multi-queue Works Fine For Me.

> Block multiqueue was enabled in debian's 4.17
> (https://salsa.debian.org/kernel-team/linux/commit/049487d8822c141bef503b024e73db55e2a695ff)
> but there's no support for runtime power management yet:
> https://github.com/torvalds/linux/blob/a26fb01c2879ed7026e6cbd78bb701912d249eef/block/blk-core.c#L3765

This seems unwize. I saw the patches implementing runtime PM for MQ go
by and am firmly in the camp of not enabling the new way to do stuff
until it's (mostly) feature-complete with the old way.

> Unfortunately, the above code doesn't prevent laptop-mode-tools, tlp nor
> custom udev rules from enabling runtime-pm for devices so if you use any of
> that, you might be having runtime-pm enabled on devices that don't support it,
> and therefore get hangs.
>
> See https://github.com/rickysarraf/laptop-mode-tools/issues/123 for more
> details.

Ah! I have laptop-mode-tools installed.

Thanks,

-- 
Julian Calaby

Email: julian.calaby@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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Bug#904441: linux-image-4.17.0-1-amd64: system disk stopped during boot Tomas Janousek <tomi@nomi.cz> - 2018-07-29 12:10 +0200
  Bug#904441: linux-image-4.17.0-1-amd64: system disk stopped during boot Tomas Janousek <tomi@nomi.cz> - 2018-07-30 17:10 +0200
  Bug#904441: linux-image-4.17.0-1-amd64: system disk stopped during boot Julian Calaby <julian.calaby@gmail.com> - 2018-07-31 12:40 +0200

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