[Bug 427896] Re: Cannot unmount a windows network share.

[Jelmer Vernooij]

*** This bug is a duplicate of bug 452396 ***
    https://bugs.launchpad.net/bugs/452396

** This bug has been marked a duplicate of bug 452396
   umount.cifs does not update /etc/mtab

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https://bugs.launchpad.net/bugs/427896

Title:
  Cannot unmount a windows network share.

Status in “cifs-utils” package in Ubuntu:
  Triaged

Bug description:
  whether you use "smbmount", "mount.cifs", or "mount -t cifs" to mount
  a windows network share,

  you cannot unmount the network share.

  I have tried: "smbumount" , "umount.cifs" , and "umount -t cifs "

  many other people are having this problem and it seems that they all
  use the same program to unmount. That program always returns

  "This utility only unmounts cifs filesystems."

  even though the filesystem was mounted as "cifs"

  The only solution I have seen regarding this problem is that some
  fedora users reported that putting SELinux into permissive mode solves
  the problem.

  http://forums.fedoraforum.org/archive/index.php/t-96243.html

  I'm not sure what SELinux does exactly, but if it is in the OS then it
  is probably there for a good reason. Therefore I would not like to
  keep it in permissive mode permanently. I am going to try this to see
  if it solves my problem too.

  If you can mount without being super user, you should also be able to
  unmount. Even if I use the raw "sudo umount -t cifs" it still returns
  the same thing.

  I imagine that the bug is in SELinux configuration. Its like they shut
  if off to not block "mount.cifs", but forgot to do the same for
  "umount.cifs"

  This is a major problem because after mounting the fs it cannot be
  unmounted, even by the system on shutdown. This error haults the
  shutdown, and I have to use the "press and hold the button" technique
  to shut off the laptop.

  I am using Ubuntu 9.04
  "Description:	Ubuntu 9.04
  Release:	9.04"

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