Re: Fwd: Infiniate systemd loop when power off the machine with multiple MD RAIDs

From: Yu Kuai <yukuai1@huaweicloud.com>
To: Bagas Sanjaya <bagasdotme@gmail.com>,
	Christoph Hellwig <hch@lst.de>, Song Liu <song@kernel.org>,
	AceLan Kao <acelan@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Regressions <regressions@lists.linux.dev>,
	Linux RAID <linux-raid@vger.kernel.org>,
	"yukuai (C)" <yukuai3@huawei.com>
Subject: Re: Fwd: Infiniate systemd loop when power off the machine with multiple MD RAIDs
Date: Mon, 21 Aug 2023 21:18:28 +0800	[thread overview]
Message-ID: <433392a3-5ec4-cd63-fa5b-58e24deb56b9@huaweicloud.com> (raw)
In-Reply-To: <028a21df-4397-80aa-c2a5-7c754560f595@gmail.com>

Hi,

在 2023/08/16 17:37, Bagas Sanjaya 写道:
> Hi,
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
>> It needs to build at least 2 different RAIDs(eg. RAID0 and RAID10, RAID5 and RAID10) and then you will see below error repeatly(need to use serial console to see it)
>>
>> [ 205.360738] systemd-shutdown[1]: Stopping MD devices.
>> [ 205.366384] systemd-shutdown[1]: sd-device-enumerator: Scan all dirs
>> [ 205.373327] systemd-shutdown[1]: sd-device-enumerator: Scanning /sys/bus
>> [ 205.380427] systemd-shutdown[1]: sd-device-enumerator: Scanning /sys/class
>> [ 205.388257] systemd-shutdown[1]: Stopping MD /dev/md127 (9:127).
>> [ 205.394880] systemd-shutdown[1]: Failed to sync MD block device /dev/md127, ignoring: Input/output error
>> [ 205.404975] md: md127 stopped.
>> [ 205.470491] systemd-shutdown[1]: Stopping MD /dev/md126 (9:126).
>> [ 205.770179] md: md126: resync interrupted.
>> [ 205.776258] md126: detected capacity change from 1900396544 to 0
>> [ 205.783349] md: md126 stopped.
>> [ 205.862258] systemd-shutdown[1]: Stopping MD /dev/md125 (9:125).
>> [ 205.862435] md: md126 stopped.
>> [ 205.868376] systemd-shutdown[1]: Failed to sync MD block device /dev/md125, ignoring: Input/output error
>> [ 205.872845] block device autoloading is deprecated and will be removed.
>> [ 205.880955] md: md125 stopped.
>> [ 205.934349] systemd-shutdown[1]: Stopping MD /dev/md124p2 (259:7).
>> [ 205.947707] systemd-shutdown[1]: Could not stop MD /dev/md124p2: Device or resource busy
>> [ 205.957004] systemd-shutdown[1]: Stopping MD /dev/md124p1 (259:6).
>> [ 205.964177] systemd-shutdown[1]: Could not stop MD /dev/md124p1: Device or resource busy
>> [ 205.973155] systemd-shutdown[1]: Stopping MD /dev/md124 (9:124).
>> [ 205.979789] systemd-shutdown[1]: Could not stop MD /dev/md124: Device or resource busy
>> [ 205.988475] systemd-shutdown[1]: Not all MD devices stopped, 4 left.

Without the problem, did the log complain about this?

Could not stop MD...Device or resource busy

Thanks,
Kuai

> 
> See Bugzilla for the full thread and attached full journalctl log.
> 
> Anyway, I'm adding this regression to be tracked by regzbot:
> 
> #regzbot introduced: 12a6caf273240a https://bugzilla.kernel.org/show_bug.cgi?id=217798
> #regzbot title: systemd shutdown hang on machine with different RAID levels
> 
> Thanks.
> 
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217798
> 