[Ocfs2-users] OCFS2 “Heartbeat generation mismatch on device” error when mounting iscsi target

[Danijel Krmar]

Thank you for the replies. The problem was really one server which shouldn’t have been in the cluster at all. It was kind of a leftover, but it continued to heartbeat in the new cluster.

After completely disconnecting the server from the cluster the issue was gone.

Thanks once again.
-- 
Danijel Krmar
A51 D.O.O.
Novi Sad
https://www.activecollab.com/

On February 10, 2015 at 12:12:12 AM, Sunil Mushran (sunil.mushran at gmail.com) wrote:

If ps aux|grep o2hb does not return anything, means you are using local heartbeat.

That means you have mismatching ocfs2.conf file. And I suspect the node where this is failing is the one that has the bad ocfs2.conf file. Compare the config files from all the nodes and ensure it is the same. Or you could simply replace the one on the failing node from another node. The file should be the same everywhere. Remember to restart the cluster on that node.

On Mon, Feb 9, 2015 at 2:27 PM, Danijel Krmar <danijel.krmar at activecollab.com> wrote:
No, nothing there:
$ ps aux | grep o2hb
root      5724  0.0  0.0   8320   888 pts/0    S+   22:30   0:00 grep --color o2hb

Still the same error if i try to mount the iSCSI disk:
o2hb_check_own_slot:590 ERROR: Heartbeat generation mismatch on device (sdb): expected(2:0x2f32486d4c54730a, 0x54d926d7), ondisk(2:0xb016e6a72676a791, 0x54d926d7)

As said, there are no such problems on other machines, just this one. I can’t get my head around this "Heartbeat generation mismatch” error message. 

-- 
Danijel Krmar
A51 D.O.O.
Novi Sad
https://www.activecollab.com/

On February 9, 2015 at 8:09:06 PM, Sunil Mushran (sunil.mushran at gmail.com) wrote:

On node 2, do:
ps aux | grep o2hb

I suspect you have multiple o2hb threads running. If so, restart the o2cb cluster on that node.

On Mon, Feb 9, 2015 at 10:08 AM, Danijel Krmar <danijel.krmar at activecollab.com> wrote:
As said in the title, when I want to mount a iSCSI target on one machine I get the following error:


(o2hb-3F92114867,7826,3):o2hb_check_own_slot:590 ERROR: Heartbeat generation mismatch on device (sdb): expected(2:0xa0cf28215b4b1ed3, 0x54d8a036), ondisk(2:0xb016e6a72676a791, 0x54d8a037)

The same iSCSI target is working on other machines.

Any idea what this error means? 


-- 
Danijel Krmar
A51 D.O.O.
Novi Sad
https://www.activecollab.com/

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