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Hello .<br>
<br>
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.<br>
<br>
Thanks<br>
<br>
Martin<br>
<br>
Alexei_Roudnev wrote:<br>
<blockquote cite="mid06d301c744e6$194cf830$6f31a8c0@sjc.exigengroup.com"
type="cite">
<pre wrap="">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).
<font color="#ffcc33">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).</font>
</pre>
<blockquote type="cite">
<pre wrap="">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.
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</pre>
</blockquote>
<pre wrap=""><!---->
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</pre>
</blockquote>
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