https://bugzilla.novell.com/show_bug.cgi?id=363249 User b.burkhardt@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c2 --- Comment #2 from Birger Burkhardt 2008-03-14 03:41:53 MST --- Hi Roland, sorry for my delayed answer - the cluster system where the problem first occured is by now operating live using another configuration (no ocfs2). Therfore I had to install a new test system (on some "old" lab hardware). The problem still exists. There is no output on neither serial console nor vga console connected to the server. The system just unexpectedly reboots with NO message before rebooting (console, logfile, serial console). The reboot occurs even if I stop ocfs2 and o2cb service on the opposed cluster-node. I produced the I/O with bonnie++ command (bonnie++ -u0 -d <path-to-ocfs2-mount> -s 9000). -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User b.burkhardt@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c4 --- Comment #4 from Birger Burkhardt 2008-03-26 04:45:41 MST --- Hi Jeff, sorry, but when I try to change the value of "fence_method" as user "root", I get the following error: echo panic > /sys/o2cb/fence_method -bash: echo: write error: Invalid argument echo "panic" > /sys/o2cb/fence_method -bash: echo: write error: Invalid argument -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User b.burkhardt@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c6 Birger Burkhardt changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW Info Provider|b.burkhardt@gmx.de | --- Comment #6 from Birger Burkhardt 2008-03-28 03:42:10 MST --- Hi Jeff, after executing the command echo -n "panic" > /sys/o2cb/fence_method and starting bonnie++, the system "hangs" after a few minutes of executing bonnie++. The Output on the system console on both machines is: Kernel panic - not syncing: *** ocfs2 is verry sorry to be fencing this system by panicing *** Since i now have setup this dedicated test-system, I could also test some parameters or patches for you. Thanks & best regards, Birger -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User b.burkhardt@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c8 Birger Burkhardt changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW Info Provider|b.burkhardt@gmx.de | --- Comment #8 from Birger Burkhardt 2008-03-28 14:03:01 MST --- Hi Jeff, I set this value on both systems, but the problem still exists, both machines still reboot without any output. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User b.burkhardt@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c10 Birger Burkhardt changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW Info Provider|b.burkhardt@gmx.de | --- Comment #10 from Birger Burkhardt 2008-03-28 14:18:36 MST --- Yes, they were both rebooted after editing the configfile and I checked it after reboot via /etc/init.d/o2cb status -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c11 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|openSUSE10.3 crashes with DRBD and OCFS under |openSUSE10.3 crashes with DRBD and OCFS2 under |heavy I/O load |heavy I/O load --- Comment #11 from Jeff Mahoney 2008-03-28 14:33:17 MST --- Well this means that either network connectivity or disk connectivity between the machines has been interrupted. With the threshold at 31, it means a full minute has passed or 10 seconds have passed without network connectivity. You can try using the new default for network connectivity: O2CB_IDLE_TIMEOUT_MS=30000 Something is causing latency and starvation in your environment. This isn't a bug in OCFS2. Your configuration isn't meeting the requirements of OCFS2. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c13 --- Comment #13 from Jeff Mahoney 2008-04-22 08:17:15 MST --- Well any latency introduced by drbd is really outside of the scope of OCFS2. I'm surprised that removing the switch solves the problem. Perhaps your switch is flaking out? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c15 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mfasheh@novell.com --- Comment #15 from Jeff Mahoney 2008-04-22 13:05:45 MST --- Ah ok, that's not quite what you said in your comment. Thanks for the clarification. It could be that drbd is saturating your network connection and the keepalive packets aren't making it between the machines. You might want to try using a separate link for the cluster traffic. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c17 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lmb@novell.com --- Comment #17 from Jeff Mahoney 2008-05-05 11:20:42 MST --- Is your drbd device configured in sync or async mode? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c19 --- Comment #19 from Jeff Mahoney 2008-06-18 10:44:29 MDT --- Does changing O2CB_HEARTBEAT_THRESHOLD help at all? It defaults to 7, which means 14 seconds. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=363249 User jeffm@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=363249#c21 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |WONTFIX --- Comment #21 from Jeff Mahoney 2008-12-05 13:47:37 MST --- OpenSUSE 11.1 has added robust userspace cluster support that eliminates the disk heartbeat. I'm going to close this one as WONTFIX. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.