[Ocfs2-users] Also just a comment to the Oracle guys

[martin sautter]

Hello .

please can anybody explain why iSCSI  requires 3 nodes  for a stable 
cluster configuration  or which problems I  will have with a 2 node 
OCFS2 cluster against iSCSI  based storage.

Thanks

Martin

Alexei_Roudnev wrote:

>IF you need to DOWNLOAD and COMPILE KERNEL component
>
>THEN
>
>this system is not production ready.
>
>ENDIF
>
>(Reason - your personal combination of module, kernel, libraries and other
>components was never tested in the wild).
>
>
>Don't forget, when testing OCFSv2 on iSCSI, that it require 3 (not 2)
>servers for the stable cluster configuration, and that, if you use iSCSI,
>you may want to increase heartbeat timeout few times (default is 12 seconds,
>and Ethernet convergence time is 40 - 50 seconds).
>
>
>
>  
>
>>After over a week of trying to figure out what to do about a cluster
>>system, and over 5 days of trying to compile, install, configure
>>redhat's GFS, i got frustrated and gave up and took another look at
>>ocfs2 today.
>>
>>I have to say, you guys put this together pretty slick. I do still
>>want to try out GFS but after 5 days of mucking around with
>>downloading different versions of 4 or 5 different software pieces
>>(device-mapper, openais, cluster, lvm2, udev) and not getting ANYWHERE
>>i gave up.
>>
>>so today I installed a new linux-2.6.19.2 kernel with ocsfs2 modules,
>>installed iscsi-target on a test server using a 500g sata drive and
>>then installed the ocsfs2-tools-1.2.2 rpm on two FC6 machines and got
>>it all working in one work day today. I had to do a little messing
>>around with the configs and iscsi stuff, and figuring out to increase
>>the heartbeat timeout to prevent self fencing and stuff, but once that
>>was done it was pretty cool.
>>
>>So heres a good job on keeping things pretty damn simple! Install a
>>kernel and one rpm and make a configuration file and thats about all
>>it took. Very nice!
>>
>>Im looking forward to doing a bunch of testing tomorrow after i do an
>>entire clean os install on all the machines and see if i run into any
>>problems.
>>
>>_______________________________________________
>>Ocfs2-users mailing list
>>Ocfs2-users at oss.oracle.com
>>http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>
>>    
>>
>
>
>_______________________________________________
>Ocfs2-users mailing list
>Ocfs2-users at oss.oracle.com
>http://oss.oracle.com/mailman/listinfo/ocfs2-users
>  
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://oss.oracle.com/pipermail/ocfs2-users/attachments/20070131/5ce1e2f1/attachment-0001.html