Red Hat Bugzilla – Bug 442515
GDM can't cope with filesystems which don't support inotify (e.g. GFS2)
Last modified: 2015-01-14 18:20:56 EST
Description of problem:
When home is a GFS2 volume some file operations regularly hang the whole system.
For example starting OpenOffice from user with home on GFS2 always results in
Version-Release number of selected component (if applicable):
Fedora 8 up to date.(kernel 126.96.36.199-64)
gfs2-utils-2.03.00-3.fc8 (from koji)
(fedora 9 beta is also affected)
Steps to Reproduce:
1. make gfs2 volume (I have tested with lock_nolock on a local drive)
2. mount this volume on /home and create user home dir for or just create new user.
3. login as the mentioned above user and start openoffice. ("cat /dev/zero >
~/gfs2_file" also reproduces the problem though not always as ooffice does).
I confirm this bug on Fedora 8 - /home on GFS2 and openoffice.org crash.
The mount should be done from the /etc/fstab file during bootup.
The Selinux should be disabled in order to successfully mount the /home directory
to the GFS2 volute.
(Probably bug should be written against the selinux policy as well)
Fedora 9 crashes immediately when the GDM login display appears.
Just create GFS2 volume, mount it to /home (using /etc/fstab) and create a new
user with his/her /home on the GFS2 volume.
Reboot Fedora 9 and you’ll see the crash. (Selinux should be disabled again.)
There might be several problems here, but one at least is selinux related.
I wonder if the non-selinux part of this is actually a dup of #437076... no
proof, but just a hunch.
Just to make clear: in my initial report I did not mention selinux, but it was
So i have been investigating this problem now a bit and these are my findings on
a plain Fedora 9 + updates installation. gfs2 is mounted via /etc/fstab as
described in the original report.
- gdm crashes due to a bug in either gdm or glib2:
gdm attempts to install an inotify watch on /home to update the login user list.
inotify is not supported in gfs2.
glib2 attempts to fallback but something is buggy there and segfault, resulting
in gdm restarting over and over.
- enabling or disabling selinux made no difference.
- since it's not possible to login locally, i used an ssh tunnelled X session to
run openoffice. I was able to start and stop ooffice several times with no
problems. Also running other different things, keeping /home very busy, like
building packages, editing code etc.
This bug should probably be splitted to be of any use.
Since this has been verifird on F-9, I'm bumping the version of this bug. Also
reassigning to gdm owner. If there is a problem with selinux & GFS2, then please
open another bz to deal with that.
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