From: Yu Kuai <yukuai1@huaweicloud.com>
To: Christian Theune <ct@flyingcircus.io>, Yu Kuai <yukuai1@huaweicloud.com>
Cc: John Stoffel <john@stoffel.org>,
"linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>,
dm-devel@lists.linux.dev, "yukuai (C)" <yukuai3@huawei.com>
Subject: Re: PROBLEM: repeatable lockup on RAID-6 with LUKS dm-crypt on NVMe devices when rsyncing many files
Date: Fri, 9 Aug 2024 09:13:36 +0800 [thread overview]
Message-ID: <e92ccf15-be2a-a1aa-5ea2-a88def82e681@huaweicloud.com> (raw)
In-Reply-To: <C832C22B-E720-4457-83C6-CA259AD667B2@flyingcircus.io>
Hi,
在 2024/08/08 16:53, Christian Theune 写道:
> Hi,
>
>> On 8. Aug 2024, at 09:06, Christian Theune <ct@flyingcircus.io> wrote:
>>>
>>> 1) With the hangtaks, are the underlying disks idle?(By iostat). And can
>>> you please collect /sys/block/[disk]/inflight for both raid and
>>> underlying disks.
>
> The underlying disks are completely idle, the md reports 100% utilization:
>
> Device r/s rkB/s rrqm/s %rrqm r_await rareq-sz w/s wkB/s wrqm/s %wrqm w_await wareq-sz d/s dkB/s drqm/s %drqm d_await dareq-sz f/s f_await aqu-sz %util
> dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
> dm-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> dm-2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> dm-3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> dm-4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
> md127 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
> nvme0n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme10n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme11n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme1n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme2n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme3n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme4n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme5n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme6n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme7n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme8n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> nvme9n1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
> sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
>
> Inflight seems 0:
>
> $ cat /sys/block/nvme*/inflight
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
> 0 0
>
> The md has 348 inflight:
>
> /sys/block/md127
> 0 348
>
> Does this help for now?
Yes, for sure IO are stuck in md127 and never get dispatched to nvme,
for now I'll say this is a raid5 problem.
Can you describe in steps how do you reporduce this problem? We must
figure out where are those IO and why they're not dispatched. I'll be
easier to debug if I can reporduce it. Otherwise I'll have to give you
a debug patch.
Thanks,
Kuai
>
> Liebe Grüße,
> Christian Theune
>
next prev parent reply other threads:[~2024-08-09 1:13 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-06 14:10 PROBLEM: repeatable lockup on RAID-6 with LUKS dm-crypt on NVMe devices when rsyncing many files Christian Theune
2024-08-06 14:10 ` Christian Theune
2024-08-07 2:55 ` Yu Kuai
2024-08-07 5:31 ` Christian Theune
2024-08-07 6:46 ` Christian Theune
2024-08-07 8:59 ` Christian Theune
2024-08-07 21:05 ` John Stoffel
2024-08-08 1:33 ` Yu Kuai
2024-08-08 6:02 ` Christian Theune
2024-08-08 6:55 ` Yu Kuai
2024-08-08 7:06 ` Christian Theune
2024-08-08 8:53 ` Christian Theune
2024-08-09 1:13 ` Yu Kuai [this message]
2024-08-09 6:10 ` Christian Theune
2024-08-09 22:51 ` John Stoffel
2024-08-12 6:58 ` Christian Theune
2024-08-12 18:37 ` John Stoffel
2024-08-14 8:53 ` Christian Theune
2024-08-15 6:19 ` Christian Theune
2024-08-15 10:03 ` Christian Theune
2024-08-15 11:14 ` Yu Kuai
2024-08-15 11:24 ` Christian Theune
2024-08-15 11:49 ` Yu Kuai
2024-10-22 15:02 ` Christian Theune
2024-10-23 1:13 ` Yu Kuai
2024-10-23 6:03 ` Christian Theune
2024-10-23 17:50 ` Christian Theune
2024-10-25 8:39 ` Christian Theune
2024-10-25 13:31 ` Dragan Milivojević
2024-10-25 14:02 ` Christian Theune
2024-10-26 5:37 ` Christian Theune
2024-10-26 9:07 ` Yu Kuai
2024-10-26 11:51 ` Christian Theune
2024-10-26 12:07 ` Christian Theune
2024-10-26 12:11 ` Christian Theune
2024-10-30 1:25 ` Yu Kuai
2024-10-30 6:29 ` Christian Theune
2024-10-31 7:48 ` Yu Kuai
2024-10-31 8:04 ` Christian Theune
2024-10-31 15:07 ` Christian Theune
2024-10-31 19:46 ` Christian Theune
2024-10-31 20:33 ` John Stoffel
2024-11-01 2:02 ` Yu Kuai
2024-11-01 7:56 ` Christian Theune
2024-11-01 8:33 ` Christian Theune
2024-11-03 15:54 ` Christian Theune
2024-11-03 16:16 ` Dragan Milivojević
2024-11-04 11:29 ` Yu Kuai
2024-11-04 11:51 ` Christian Theune
2024-11-04 12:30 ` Yu Kuai
2024-11-04 11:40 ` Yu Kuai
2024-11-04 12:18 ` Yu Kuai
2024-11-04 14:45 ` Christian Theune
2024-11-04 20:04 ` Christian Theune
2024-11-05 1:20 ` Yu Kuai
2024-11-05 6:23 ` Christian Theune
2024-11-05 10:15 ` Christian Theune
2024-11-06 6:35 ` Yu Kuai
2024-11-06 6:40 ` Christian Theune
2024-11-07 7:55 ` Yu Kuai
2024-11-07 8:01 ` Yu Kuai
2024-11-09 11:35 ` Xiao Ni
2024-11-11 2:25 ` Yu Kuai
2024-11-11 8:00 ` Christian Theune
2024-11-11 14:34 ` Christian Theune
2024-11-12 6:57 ` Christian Theune
2024-11-14 15:07 ` Christian Theune
2024-11-15 8:07 ` Xiao Ni
2024-11-15 8:44 ` Christian Theune
2024-11-15 10:11 ` Xiao Ni
2024-11-15 11:06 ` Christian Theune
2024-12-10 8:33 ` Christian Theune
2024-12-16 13:25 ` Christian Theune
2024-12-16 13:36 ` Yu Kuai
2024-12-16 14:18 ` Christian Theune
2025-01-20 9:19 ` Christian Theune
2025-01-24 6:22 ` Christian Theune
2025-01-24 6:35 ` Yu Kuai
2025-01-24 6:38 ` Christian Theune
2024-08-15 15:53 ` John Stoffel
2024-08-15 19:13 ` Christian Theune
2024-08-26 14:38 ` Christian Theune
2024-08-08 14:23 ` John Stoffel
2024-08-19 19:12 ` tihmstar
2024-08-19 21:05 ` John Stoffel
2024-08-24 16:56 ` tihmstar
2024-08-24 18:12 ` Dragan Milivojević
2024-08-27 1:27 ` John Stoffel
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