The systemd bug report states that issuing `systemctl daemon-reload` clears the stale state. I confirm that systemctl daemon-reload followed by the mount command then works as expected, without requiring a machine reboot.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/2000875 Title: Systemd blocks manual disk mount Status in util-linux package in Ubuntu: New Bug description: This is apparently a long running systemd bug: https://github.com/systemd/systemd/issues/1741 jlquinn@cerberus:~$ lsb_release -rd Description: Ubuntu 20.04.5 LTS Release: 20.04 jlquinn@cerberus:~$ apt-cache policy mount mount: Installed: 2.34-0.1ubuntu9.3 Candidate: 2.34-0.1ubuntu9.3 Version table: *** 2.34-0.1ubuntu9.3 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 2.34-0.1ubuntu9 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages jlquinn@cerberus:~$ apt-cache policy systemd systemd: Installed: 245.4-4ubuntu3.19 Candidate: 245.4-4ubuntu3.19 Version table: *** 245.4-4ubuntu3.19 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 245.4-4ubuntu3.15 500 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 245.4-4ubuntu3 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages I am replacing a raid array with a new larger one. After finishing the migration, I try to mount the new one where the old one was located. This doesn't work due to something stale in systemd. There is also a bug in mount, as it should at least return a failure when this happens. So there are actually 2 bugs here. The package is util-linux because that is what `ubuntu-bug mount` chose. root@cerberus:/home/jlquinn# df -h /space Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu--vg-root 915G 269G 600G 31% / root@cerberus:/home/jlquinn# mount /dev/md1 /space root@cerberus:/home/jlquinn# echo $? 0 root@cerberus:/home/jlquinn# df -h /space Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu--vg-root 915G 269G 600G 31% / root@cerberus:/home/jlquinn# mount /dev/md1 /mnt2/ root@cerberus:/home/jlquinn# df -h /mnt2 Filesystem Size Used Avail Use% Mounted on /dev/md1 7.2T 2.9T 4.0T 43% /mnt2 from journalctl: Jan 02 12:48:45 cerberus kernel: EXT4-fs (md1): mounted filesystem with ordered data mode. Opts: (null) Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus umount[150662]: umount: /space: target is busy. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Mount process exited, code=exited, status=32/n/a Jan 02 12:48:45 cerberus systemd[1]: Failed unmounting /space. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus umount[150664]: umount: /space: target is busy. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Mount process exited, code=exited, status=32/n/a Jan 02 12:48:45 cerberus systemd[1]: Failed unmounting /space. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus umount[150673]: umount: /space: target is busy. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Mount process exited, code=exited, status=32/n/a Jan 02 12:48:45 cerberus systemd[1]: Failed unmounting /space. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus umount[150676]: umount: /space: target is busy. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Mount process exited, code=exited, status=32/n/a Jan 02 12:48:45 cerberus systemd[1]: Failed unmounting /space. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus umount[150677]: umount: /space: target is busy. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Mount process exited, code=exited, status=32/n/a Jan 02 12:48:45 cerberus systemd[1]: Failed unmounting /space. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-ad104abb\x2d9033\x2d4f69\x2daa26\x2d446654f03dc9.device. Stopping, too. Jan 02 12:48:45 cerberus systemd[1]: Unmounting /space... Jan 02 12:48:45 cerberus systemd[2575]: space.mount: Succeeded. Jan 02 12:48:45 cerberus systemd[17926]: space.mount: Succeeded. Jan 02 12:48:45 cerberus systemd[1]: space.mount: Failed with result 'exit-code'. Jan 02 12:48:45 cerberus systemd[1]: Unmounted /space. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: mount 2.34-0.1ubuntu9.3 ProcVersionSignature: Ubuntu 5.4.0-135.152-generic 5.4.212 Uname: Linux 5.4.0-135-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.25 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Jan 2 12:58:01 2023 InstallationDate: Installed on 2020-05-29 (947 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: util-linux UpgradeStatus: Upgraded to focal on 2020-11-04 (789 days ago) mtime.conffile..etc.apport.crashdb.conf: 2021-06-21T20:18:54.448530 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/2000875/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
