Public bug reported: At a client's site (a large mining company here in Queensland) we have a Ubuntu 10.04 virtual machine running MacroView SCADA in a dr:bd high availability cluster. Workstations connect to the server via XDMCP for control of the local plant.
In the past they ran two discrete Ubuntu servers, which used to run reliably for months at a time. Since the switch to the high availability cluster, they now find gdm will refuse to accept new logins after about 6 weeks of operation until the gdm service is restarted. The restart of gdm has the effect of booting off everyone currently logged in -- so for a few seconds, everyone loses control of the processing plant while people re-connect, every 6 weeks. The logs show the following: Sep 20 08:23:38 cgmv1 gdm-binary[31050]: CRITICAL: could not add display to access file: Too many open files Sep 20 08:23:38 cgmv1 gdm-binary[31050]: WARNING: Unable to set up access control for display 1691 Sep 20 08:23:38 cgmv1 gdm-binary[31050]: WARNING: GdmDisplay: display lasted 0.010690 seconds Doing a search, it would appear this is a file-handle leaking bug reported to Red Hat back in February 2010: https://bugzilla.redhat.com/show_bug.cgi?id=562143 Comment #2 of that bug has a patch that allegedly fixes the problem. I have hand-applied the patch against the latest stable source package of gdm (2.30.2.is.2.30.0), which I have attached here and am in the process of testing. ** Affects: gdm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1053217 Title: gdm leaking filehandles, causing "too many open files" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1053217/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
