[Ocfs2-users] mount type heartbeat=local

[Ulf Zimmermann]

Sunil, I was trying to see what the speed difference would be if I mount a volume with no heartbeat (for copy purpose):

dbtest01 root /home/ulf # mount -o datavolume,nointr,heartbeat=none /dev/mapper/350002ac001380dab /export/coptest/
dbtest01 root /home/ulf # mount
/dev/mapper/350002ac001380dab on /export/coptest type ocfs2 (rw,_netdev,datavolume,nointr,heartbeat=none,heartbeat=local)

This was with o2cb running, is this right? This is on EL5 with ocfs2 1.4.7 and tools 1.4.4


From: ocfs2-users-bounces at oss.oracle.com [mailto:ocfs2-users-bounces at oss.oracle.com] On Behalf Of Sunil Mushran
Sent: Friday, September 09, 2011 9:46 PM
To: Hai Tao
Cc: ocfs2-users at oss.oracle.com
Subject: Re: [Ocfs2-users] mount type heartbeat=local

That's mount type. Yes, we should not have overloaded the term "local".

On 09/09/2011 07:53 PM, Hai Tao wrote:
but this is what I saw in the guide
OCFS2 - A Cluster File System For Linux<http://oss.oracle.com/projects/ocfs2/dist/documentation/v1.4/ocfs2-1_4-usersguide.pdf>



Mount Type


Valid types are

cluster and local, with the former also being the default. Specify

localif you intend to use the file system on one node only.



Thanks.

Hai Tao


________________________________
Date: Fri, 9 Sep 2011 19:04:28 -0700
From: sunil.mushran at oracle.com<mailto:sunil.mushran at oracle.com>
To: taoh666 at hotmail.com<mailto:taoh666 at hotmail.com>
CC: ocfs2-users at oss.oracle.com<mailto:ocfs2-users at oss.oracle.com>
Subject: Re: [Ocfs2-users] mount type heartbeat=local

That mount option is appended by mount.ocfs2. It tells users
the heartbeat mode. "none" means non-clustered. "local" means
the heartbeat region is on the mounted volume. This is the default
mode. In 1.8 we have "global" which means the heartbeat region
has been configured on 1+ devices. local and global are only
pertinent in the o2cb stack. If you are using pacemaker, you will
see cluster_stack=pcmk and not heartbeat=.

There is no heartbeat=cluster.

On 09/09/2011 04:43 PM, Hai Tao wrote:

Hi,

when I mount ocfs2 file system, what the heartbeat=local option means? what is the difference between heartbeat=local and heartbeat=cluster (I know that is default)?

Thanks.


Hai


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