encrypted /home randomly unmount on vm

[Malin Bruland]

ecryptfs-utils is runned on a vm

1)
Description: Ubuntu 12.04 LTS
Release: 12.04

2)
ecryptfs-utils:
  Installert: 96-0ubuntu3
  Kandidat: 96-0ubuntu3
  Versjonstabell:
 *** 96-0ubuntu3 0
        500 http://no.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

3)
I expect the encrypted home folder to be mounted

4)
Instead the home folder is randomly unmounted

This bug is earlier described here:

https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/259293
https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/358573

[RoyK (roysk)]

I run the server where this happened, and the first time it happened, manually mounting the encrypted homedir failed with permission denied/wrong password, even though I'm positive it was the right one. To allow re-mounting, I did a "killall -u malin", and told her to login once more. After this, it mounted correcly, but then, lost its mounting a few weeks later.

[RoyK (roysk)]

This continues to happen, every now and then. Anyone with an idea of how I can debug this?

[RoyK (roysk)]

Adding a bit more info here: It looks to me that ecryptfs is unmounted when the client is disconnected, and that the open screen session won't help this.

- Could it be that some status flag is set halfway, that indicate it's mounted already?
- What is the action that makes ecryptfs unmount? The initial shell dying?

roy