Hello, I've got a 2 node HP DL580 cluster supported by a Fibrechannel SAN with dual FC cards, dual switches and an HP EVA on the back end. All SAN disks are multipathed. Installed software is:
Redhat 5.3 ocfs2-2.6.18-128.1.14.el5-1.4.2-1.el5 ocfs2-tools-1.4.2-1.el5 ocfs2console-1.4.2-1.el5 Oracle RAC 11g ASM Oracle RAC 11g Clusterware Oracle RAC 10g databases OCFS2 isn't being used by RAC, we're using ASM for that, but OCFS2 is used to provide a shared /usr/local, /home and /apps. Yesterday I discovered something very unexpected. I shutdown node B to single user mode, and immediately node A crashed. The only message on the console was SysRq Resetting. Node A then rebooted normally. I then exit single user mode on node B to jump back up to run level 3 the system started up ok, but no sooner had I got the login prompt on the console when it too crashed with SysRq Resetting. I repeated the steps for a second time and it did exactly the same thing all over again. It appears to be repeatable. The only thing that jumped out at me watching the consoles when this was going on was that node B fails to stop the OCFS2 service on shutdown, even going to far as to tell me after the fact with an "eeeeeee" message. I assume that's bad ! There were no other console messages to give me a clue, so this is my starting point. Anyone got any ideas? Oh, there's one other thing that may or may not be relevant. On this cluster, and another identical cluster, mounted.ocfs2 -f always shows the node B cluster member as "Unknown" instead of the system name. As far as I'm aware I've followed the OCFS2 setup to the letter (it's not complicated) and "o2cb_ctl -It node" on either node shows both systems with all the correct details. Both nodes mount the cluster filesystems ok and work just fine. I've not had chance to try my single user test on the other identical cluster yet as I've not been able to get a downtime window for it. If I do, then I will. Rgds, John _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
