Hello,
OS: Debian 12
systemd: 252
Could someone please explain why systemd-umount doesn't unmount LVM
volumes by device:
$ systemd-mount /dev/vg0/lv0 /mnt/lvm/
Started unit mnt-lvm.mount for mount point: /mnt/lvm
$ findmnt -n /mnt/lvm
/mnt/lvm /dev/mapper/vg0-lv0 ext4 rw,relatime
$ systemctl list-units '*.mount'
mnt-lvm.mount loaded active mounted /mnt/lvm
$ systemd-umount /dev/vg0/lv0
$ systemd-umount /dev/mapper/vg0-lv0
$ systemd-umount /dev/dm-0
None of the above commands unmount LVM volume. They don't produce any
output and the exit status is zero.
On the other hand, unmounting by the mountpoint works fine:
$ systemd-umount /mnt/lvm/
Stopped unit mnt-lvm.mount for mount point: /mnt/lvm
This only happens with LVM, not with regular block devices.
Is this a bug or a feature?
--
Regards,
Vladimir Mokrozub
