*** This bug is a duplicate of bug 1940514 ***
https://bugs.launchpad.net/bugs/1940514
In systemd/mdadm.shutdown from mdadm, it also do "mdadm --wait-clean
--scan". But in ubuntu we do not install mdadm-shutdown.service, and do
ship finalrd hook.
$ cat ./debian/mdadm.finalrd
#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-only
set -e
if [ "$1" = "setup" ]
then
. /usr/share/initramfs-tools/hook-functions
copy_exec /sbin/mdadm
copy_exec /sbin/mdmon
exit 0
fi
mdmon --all --takeover
mdadm -vv --wait-clean --scan
mdadm -vv --stop --scan
** Description changed:
After I installed the mdadm, it will show this error information, our
OEM vendor request to fix this issue.
The root cause is that mdadm depend on finalrd, and finalrd will switch
- rootfs to clean disk, but it cou.dn't umount /oldroot, cause it's used
+ rootfs to clean disk, but it couldn't umount /oldroot, cause it's used
by plymouth.
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https://bugs.launchpad.net/bugs/1955690
Title:
Prompt error message "Failed to unmount /oldroot" when shutdown or
reboot
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