[Bug 1754506] Re: AutoFS does not automatically umount SMB shares

[Alexander Lochmann]

I finally solved the problem with the help of Ian Kent.
He pointed me in the right direction: https://git.kernel.org/pub/scm/linux/storage/autofs/autofs.git/commit/?id=37dd05dd1bccdedc4157902420e1da506b2bf35f

A trailing slash in the /etc/auto.master was the problem. I consider it both a config problem and a bug.
However, it has already been fixed in the upstream sources. I therefore ask you to update Ubuntu's version of autofs daemon.

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Title:
  AutoFS does not automatically umount SMB shares

Status in autofs package in Ubuntu:
  Incomplete

Bug description:
  Description:    Ubuntu 17.10
  Release:        17.10

  autofs:
    Installed: 5.1.2-1ubuntu1
    Candidate: 5.1.2-1ubuntu1
    Version table:
   *** 5.1.2-1ubuntu1 500
          500 http://de.archive.ubuntu.com/ubuntu artful/main amd64 Packages
          100 /var/lib/dpkg/status

  Kernel: self-built 4.15.6

  What I expect:
  I expect AutoFS to automatically unmount my samba share after the timeout. However, it does not. The share is still mounted.
  I've turned the autofs debug output in the kernel module. As far as I can tell, the kernel thinks the cifs mount is still busy.

  I'm using the smb automount script provided by the package: /etc/auto.smb. I've just added an additional cifs parameter(vers=2.0).
  My auto.master looks as follows:
  /media/smb/      program:/etc/auto.smb

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