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Re: systemd bogus(?) remounts since upgrade to 249.5-1



reassign 996876 src:linux
retitle 996876 filesystem being remounted supports timestamps until 2038
thanks

On Wed, 20 Oct 2021 08:51:44 +0200 10dmar10 <10dmar10@gmail.com> wrote:
Package: systemd
Version: 249.5-1
Severity: normal

Hi,

I noticed since upgrade to systemd 249.5-1 on 2021-10-15 following
remount warnings in my log files, usually when some service is started.

While there are no problems caused by this behavior so far (besides spamming into log a lot),
I assume it is unintended and may indicate some underlying problem.


log snippets:

Okt 17 23:54:14 tetranode systemd[1]: Starting Network Name Resolution...
Okt 17 23:54:14 tetranode systemd[1]: Starting Network Time Synchronization...
Okt 17 23:54:14 tetranode systemd[1]: Starting Record System Boot/Shutdown in UTMP...
Okt 17 23:54:14 tetranode systemd[1]: Finished Record System Boot/Shutdown in UTMP.
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/systemd/timesync supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)                              Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/systemd/timesync supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:54:14 tetranode systemd[1]: Started Network Time Synchronization.
Okt 17 23:54:14 tetranode systemd[1]: Reached target System Initialization.


Okt 17 23:57:49 tetranode dbus-daemon[575]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service' requested by ':1.27' (uid=1000 pid=2052 comm="/usr/lib/chromium/chromium --show-component-extens")
Okt 17 23:57:50 tetranode systemd[1]: Starting Daemon for power management...
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/upower supports timestamps until 2038 (0x7fffffff)
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/upower supports timestamps until 2038 (0x7fffffff)
Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)

It was concluded that this is a kernel bug.
See also
https://lore.kernel.org/lkml/CAHk-=wim6VGnxQmjfK_tDg6fbHYKL4EFkmnTjVr9QnRqjDBAeA@mail.gmail.com/

and should be addressed in the kernel by only issuing this warning once per mount, but not on a remount.

Thus reassigning.

Regards,
Michael

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