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

[Bagas Sanjaya]

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.

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

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