Elliott Perrin wrote: > Hello Tao, > > >> Hi Elliott, >> Elliott Perrin wrote: >> >>> Hello All, >>> >>> >>> >>> I have multiple OCFS2 clusters on SLES10 SP2 running Xen. We needed >>> >> to >> >>> increase the O2CB_HEARTBEAT_THRESHOLD from 31 up to 61 and did so >>> successfully on 2 of our 3 clusters. >>> >>> >>> >>> However on one of the three clusters we are not able to change the >>> value. The /etc/sysconfig/o2cb file contains 61 as the threshold >>> >> after >> >>> reconfiguring via /etc/init.d/o2cb configure, we reconfigure all 3 >>> nodes at the same time after unmounting the volume and stopping ocfs2 >>> and o2cb on all nodes in the cluster but on restart the value is >>> >> reset >> >>> to 31. We have even gone so far as to change the default value in the >>> /etc/init.d/o2cb script from 31 to 61 thinking that must be where the >>> setting of 31 is coming from and even then, the value is set back to >>> 31. Oh, and yes, we have rebooted with the new values in both the >>> /etc/sysconfig/o2cb config and with our change of the default value >>> >> in >> >>> /etc/init.d/o2cb with no luck. >>> >>> >> I would deem that you said that >> /sys/kernel/config/cluster/ocfs2/heartbeat/dead_threshold can't be set >> to 61, right? >> > > Yes that is correct. > > >> You said even with restart, the heartbeat threadshold is still 31? That >> would be too strange. >> > > I thought the same as well. > > >> So could you please do the following steps: >> 1. /etc/init.d/o2cb offline >> this will make the cluster offline. Please make sure you didn't see >> anything in /sys/kernel/config/cluster/. >> > > That folder did disappear during restart but I am not sure if the admin I was > working with did an offline or a stop. We will do an offline during scheduled > maintenance tomorrow. > IIRC, stop only works if you set up o2cb enabled(You set this when do /etc/init.d/o2cb configure and in the option"Load O2CB driver on boot (y/n)" .) So if you don't have it enabled, stop does nothing. > >> 2. grep HEARTBEAT /etc/sysconfig/o2cb and paste here so that we know >> the configuration file has been changed. >> > > elliott.per...@xxxxxxxxxxxx:~> grep HEART /etc/sysconfig/o2cb > # O2CB_HEARTBEAT_THRESHOLD: Iterations before a node is considered dead. > O2CB_HEARTBEAT_THRESHOLD=61 > # O2CB_HEARTBEAT_MODE: Whether to use the native "kernel" or the "user" > O2CB_HEARTBEAT_MODE="kernel" > yeah, so the configuration is right. > >> 3. strace /etc/init.d/o2cb online and attach the output here. let's see >> what's going on. >> 4. cat /sys/kernel/config/cluster/ocfs2/heartbeat/dead_threshold to see >> the new value. >> > > elliott.per...@xxxxxxxxxxx:~> cat > /sys/kernel/config/cluster/XXXXXXX/heartbeat/dead_threshold > 31 > oh... > Thank you Tao, we will be performing maintenance on this cluster in the next > couple days and will try these steps. > np. Let us wait and see what's wrong.
Regards, Tao _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users