Re: [Linux-cluster] What is the proper procedure to reboot a node in a cluster?

2011-03-11 Thread Alan Brown
The only reliable way I have found (rhel4 and 5) is this: 1: Migrate all services off the node. 2: Unmount as many GFS disks as possible. 3: Power cycle the node. The other nodes will recover quickly. "cman leave (remove) (force)" sometimes works but often doesn't. -- Linux-cluster maili

Re: [Linux-cluster] which is better gfs2 and ocfs2?

2011-03-11 Thread Alan Brown
On 09/03/11 14:13, yue wrote: which is better gfs2 and ocfs2? i want to share fc-san, do you know which is better? "that depends" - it is highly dependent on the type of disk activity you are performing. There are various reviews of both FSes circulating. Personal observation: GFS and GFS2

Re: [Linux-cluster] clvmd hangs on startup

2011-03-11 Thread Alan Brown
On 08/03/11 17:11, Valeriu Mutu wrote: Hi, I think the problem is solved. I was using a 9000bytes MTU on the Xen virtual machines' iSCSI interface. Switching back to 1500bytes MTU caused the clvmd to start working. As long as everything on the network is 9000bytes then you should be ok. RH'

Re: [Linux-cluster] What is the proper procedure to reboot a node in acluster?

2011-03-11 Thread Shi Jin
To follow up, I couldn't manually leave by dlm_tool [root@test2 log]# dlm_tool leave clvmd Leaving lockspace "clvmd" dlm_open_lockspace clvmd error (nil) 2 [root@test2 log]# dlm_tool ls dlm lockspaces name clvmd id0x4104eefa flags 0x0002 leave changemember

Re: [Linux-cluster] What is the proper procedure to reboot a node in acluster?

2011-03-11 Thread Shi Jin
Thank you all. The problem I have is that I don't seem to be able to get out of the cluster gracefully, even if I stop the services manually in the right order. For example, I joined the cluster manually by starting cman, clvmd and gfs2 in the order and everything is working just fine. Then I want

Re: [Linux-cluster] dlm-pcmk-3.0.17-1.fc14.x86_64 and gfs-pcmk-3.0.17-1.fc14.x86_64 woes

2011-03-11 Thread Andrew Beekhof
On Thu, Mar 10, 2011 at 4:52 PM, Gregory Bartholomew wrote: > On 03/10/2011 01:14 AM, Andrew Beekhof wrote: >> >> On Wed, Mar 9, 2011 at 7:03 PM, Gregory Bartholomew >>  wrote: >>> >>> Never mind, I figured it out ... I needed to install the gfs2-cluster >>> package and start its service and I al

[Linux-cluster] documentation needed

2011-03-11 Thread Budai Laszlo
Hello, can you point me to some documentation of the new cluster architecture available in RHEL6? I'm interested to learn about the internals. I'm thinking about documents like the "Cluster2 architecture" (http://people.redhat.com/teigland/cluster2-arch.txt), or "Symmetric Cluster Architecture and