Comment # 9 on bug 1149980 from Stefan Hundhammer

New y2log in the error case if something could not be unmounted (/mnt/var in
this case):



2021-08-26 12:35:30 <1> install(4976) [Ruby]
  clients/umount_finish.rb(umount_target_mounts):79
  Paths to unmount:
  ["/mnt/run", "/mnt/sys", "/mnt/proc", "/mnt/dev", "/mnt/home",
  "/mnt/boot/grub2/i386-pc", "/mnt/boot/grub2/x86_64-efi",
  "/mnt/opt", "/mnt/root", "/mnt/srv", "/mnt/usr/local",
  "/mnt/var", "/mnt"]

...unmounting each one in turn...



2021-08-26 12:35:30 <2> install(4976) [Ruby]
  clients/umount_finish.rb(unmount_summary):97
  Leftover paths that could not be unmounted:
  ["/mnt/var", "/mnt"]

2021-08-26 12:35:30 <2> install(4976) [Ruby]
  clients/umount_finish.rb(log_running_processes):185

Running processes using ["/mnt/var", "/mnt"]:
                     USER        PID ACCESS COMMAND
/mnt/var:            root     kernel mount /mnt/var
                     root       4976 f.... Zypp-main
/mnt:                root     kernel mount /mnt

2021-08-26 12:35:30 <1> install(4976) [Ruby]
  clients/umount_finish.rb(dump_file):107


/proc/mounts:

...
...
/dev/sda2 /mnt btrfs rw,relatime,space_cache,subvolid=256,subvol=/@ 0 0
/dev/sda2 /mnt/var btrfs rw,relatime,space_cache,subvolid=258,subvol=/@/var 0 0


2021-08-26 12:35:30 <1> install(4976) [Ruby]
  clients/umount_finish.rb(write):64 umount_finish.rb done