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Groups > linux.debian.kernel > #58826 > unrolled thread
| Started by | Boyan Penkov <boyan.penkov@gmail.com> |
|---|---|
| First post | 2017-09-01 23:50 +0200 |
| Last post | 2017-09-02 01:30 +0200 |
| Articles | 2 — 2 participants |
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4.13: blk-mq fails to recover from suspend Boyan Penkov <boyan.penkov@gmail.com> - 2017-09-01 23:50 +0200
Re: 4.13: blk-mq fails to recover from suspend Martin Steigerwald <martin@lichtvoll.de> - 2017-09-02 01:30 +0200
| From | Boyan Penkov <boyan.penkov@gmail.com> |
|---|---|
| Date | 2017-09-01 23:50 +0200 |
| Subject | 4.13: blk-mq fails to recover from suspend |
| Message-ID | <ul1Z7-2jb-15@gated-at.bofh.it> |
Hello, I just pulled in 4.13, with the intention of trying bfq. To enable bfq as a scheduler, I passed "scsi_mod.use_blk_mq=1" to grub, and added bfq via modprobe. So far, so good: the scheduler does turn up (vis-a-vis cat /sys/block/sda/queue/scheduler). If I leave the machine and it sleeps, however, it does not wake up. This is documented: https://lkml.org/lkml/2017/7/30/3 It seems, based on the discussion in the thread above, that the issue has been resolved in 4.13-rc4 and 4.13-rc7, as the two patches mentioned there are in mainline. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.13-rc4&id=765e40b675a9566459ddcb8358ad16f3b8344bbe https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.13-rc7&id=5f042e7cbd9eb Am I missing something here? Does 4.13 from experimental really have these in? Should I be looking elsewhere to help resolve this? Cheers! -- Boyan Penkov
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| From | Martin Steigerwald <martin@lichtvoll.de> |
|---|---|
| Date | 2017-09-02 01:30 +0200 |
| Message-ID | <ul3xT-3sh-1@gated-at.bofh.it> |
| In reply to | #58826 |
Hello Boyan, Boyan Penkov - 01.09.17, 17:40: > I just pulled in 4.13, with the intention of trying bfq. > > To enable bfq as a scheduler, I passed "scsi_mod.use_blk_mq=1" to > grub, and added bfq via modprobe. So far, so good: the scheduler does > turn up (vis-a-vis cat /sys/block/sda/queue/scheduler). > > If I leave the machine and it sleeps, however, it does not wake up. > This is documented: https://lkml.org/lkml/2017/7/30/3 > > It seems, based on the discussion in the thread above, that the issue > has been resolved in 4.13-rc4 and 4.13-rc7, as the two patches > mentioned there are in mainline. > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h > =v4.13-rc4&id=765e40b675a9566459ddcb8358ad16f3b8344bbe > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h > =v4.13-rc7&id=5f042e7cbd9eb > > Am I missing something here? Does 4.13 from experimental really have > these in? Should I be looking elsewhere to help resolve this? Did you review the thread "I/O hangs after resuming from suspend-to-ram" on LKML (I think I have been epically misunderstood in this thread as it can indeed be the case that my issue is also related to blk-mq, I am currently using cfq again and machine is stable on resume from suspend)? In the end Ming Lei posted about seven more fundamental patches to fix the issue for good and I am not sure that these went in. Its late and I wanna go sleep…, but I see if I find the Message-Id of that message. Hmmm, no its not in that thread. It was in a different thread, I think Ming posted that patch series as a new thread, but I don´t find it right now. Well maybe I gave enough pointers for you to dig it up yourself. If you find anything, please let me know. I just don´t find the thread with that patch series right now. Ah, I did. Its not on LKML, but on linux-block: [PATCH 0/9] block/scsi: safe SCSI quiescing Message-Id: <20170831172728.15817-1-ming.lei@redhat.com> I bet that should be enough for you to dig it out. Goodnight, -- Martin
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