Sorry, there is no trick or workaround to change the fencing mechanism. Also, I am still not clear as what your arch is. One would imagine that the mirroring process would be transparent to the filesystem.
Mehmet Can ÖNAL wrote: > We are using /etc/sysconfig/o2cb as defaults so then as you expect > O2CB_HEARTBEAT_THRESHOLD is 31. > > The error message was : > > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## Fa01 kernel : Heartbeat thread (41) printing last 24 blocking operations > (cur=6) > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## fa01 kernel : INdex 7: took 18 ms to do waiting for read completion > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## fa01 kernel : INdex 8: took 1959 ms to do msleep > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## fa01 kernel : INdex 9: took 0 ms to do allocating bios for read > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## fa01 kernel : INdex 10: took 0 ms to do bio alloc read > ## Message from sys...@fa01 at Sun Feb 8 01:08:49 2009 ... > ## fa01 kernel : INdex 11: took 23 ms to do waiting for read completion > > At our tests we should have overwrite one of the two redo disks storage > based. Thus we overwrite it with a clone of old disks by using emc software. > As a result our server found the disk as write disable that emc tool sends > that signal to other ends of the disk when it is operating a write process. > Then highly probable our server reboots after this wirte disable thing > however it is the second redo disk and the the loose of access of this disk > is not that important, rebooting the server. for this reason i asked this > question. Is there any tip or tricks that you would give? > > > > > > > > > > > > > > > -----Original Message----- > From: Sunil Mushran [mailto:[email protected]] > Sent: Wednesday, February 11, 2009 7:36 PM > To: Mehmet Can ÖNAL > Cc: [email protected] > Subject: Re: [Ocfs2-users] forcing ocfs2 NOT to reboot the server > > No, this is not configurable. We have to fence else the processes will hang. > > From your description it appears it is rebooting because the hb ios are not > completing within the timeout. What is your current setting? > O2CB_HEARTBEAT_THRESHOLD in /etc/sysconfig/o2cb. > > Mehmet Can ÖNAL wrote: > >> *Hi everyone;* >> >> * * >> >> *I want to ask you a question whether we can make ocfs2 services not >> to reboot server when a disk can not be accessed by that server. Can I >> set the importance level of a disk for ocfs2 that when one of the >> servers can not access low level important disk ocfs2 service only >> produces an alert for that not to restart the server. Can it be a >> mount option either?* >> >> * * >> >> *PS: Result for doing that is a disaster scenario and our temporary >> system should work under these conditions. Two redo disks are written >> at the same time by a server but one of them is a mirror. So then the >> access mirror could be ignored, that reboot is costly fort he >> importance of that disk.* >> >> * * >> >> *Thanx for your time* >> >> > > _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
