Package: libpam-mount
Version: 2.16-4
Pam_mount is failing to mount filesystems when the mount point is a
polyinstantiated directory.
The problem is only when the polydir itself is used as a mountpoint; there is
no problem using a subdirectory inside the polydir. (e.g. If "/data2" is
defined as a polydir in /etc/security/pam_namespace.conf, pam_mount succeeds
when using /data2/subdir as a mount point, but fails when using /data2 as the
mount point.)
When the mount fails, lines like the following are logged by both systemd and
login (with debugging enabled in pam_mount.conf.xml):
(mount.c:250): Mount info: globalconf, user=elinde fstab=0 ssh=0
(mount.c:622): data already seems to be mounted at /data2, skipping
This bug doesn't exist in the upstream pam-mount project, but was introduced
with the patch 0014-Don-t-compare-source-when-checking-if-it-s-already-m.patch
starting in Debian's 2.16-4 release (made to address
https://bugs.debian.org/799752 and similar issues with encrypted volumes). This
bug is also reported for Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1908638
Evan Linde
Research Cyberinfrastructure Analyst
Oklahoma State University
High Performance Computing Center
405-744-1455
http://hpcc.okstate.edu/