** Changed in: oem-priority
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1928200
Title:
Prompt error message "Failed to unmount /oldroot" when shutdown or
reboot
Status in OEM Priority Project:
Fix Released
Status in systemd package in Ubuntu:
Fix Released
Status in systemd source package in Focal:
Fix Released
Bug description:
[impact]
root fs is not cleanly unmounted on shutdown
[test case]
create a file in /etc/binfmt.d/TestFormat.conf with the following
content:
:TestFormat:M::XX::/bin/true:F
reboot the system, and then shutdown or reboot again, and watch the
serial console for the error message:
sd-umount[1334]: Failed to unmount /oldroot: Device or resource busy
[regression potential]
any regression would likely cause problems on shutdown and/or reboot,
or may cause problems with unmounted root fs on shutdown/reboot
[scope]
this is needed only for f
this is fixed upstream with PR 15566 which is included in v246, so
this is fixed already in g and later
this isn't reproducable on b
[original description]
On ubuntu 20.04, with latest kernel and systemd, it will show error on
ThinkPad X1.
sd-umount[1334]: Failed to unmount /oldroot: Device or resource busy
systemd 245.4-4ubuntu3.6
kernel: 5.8.0-53
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