Odd enough! Clustat still reports "Inquorate". See the screen capture: Member Status: Inquorate Member Name Status ------ ---- ------ c01 Offline c02 Offline c03 Online, Local, rgmanager Service Name Owner (Last) State ------- ---- ----- ------ ----- c-mgmt c03 started snapshot c03 started email_notifier c03 started Thanks, Dex -----Original Message----- From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Lon Hohberger Sent: Monday, March 13, 2006 11:36 AM To: linux clustering Subject: Re: lost quorum, but the cluster services and GFSare still up On Mon, 2006-03-13 at 10:31 -0700, Dex Chen wrote: > Hi, > > > > I believe that I saw something unusual here. > > > > I have a 3 node cluster (with GFS) using CMAN. After I shutdown 2 > nodes in short time span, the cluster shows it lost quorum, but I run > the clustat on the third node, and clustat shows the cluster has 3 > nodes (2 are offline) and the other services are up. I was able to > access/read the share storage. CMAN_TOOL shows cluster lost quorum and > the activity is blocked. What I expected is that I should not allow > accessing the shared storage and other services at all when the > cluster lost the quorum. Anyone has seen the similar things? > What/where should I look into? CMAN is supposed to deliver (more or less) a STATECHANGE event to clients. At that point, quorum is checked by rgmanager, and if the cluster is no longer quorate, it halts all services immediately. Are there anything in the logs which would indicate this? It would look like: <emerg> #1 Quorum Dissolved Given that you can still access service data (e.g. clustat reports something), that means that rgmanager can still acquire locks for some reason (it takes DLM locks before giving out service data...). Does clustat report that the cluster is quorate or not? -- Lon -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
