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Howdy, thanks for all your answers here. With your help
(particularly Digimer), I was able to set up my little two node GFS2
cluster. I can't pretend yet to understand everything, but I have a
blossoming awareness of what and why and how.<br>
<br>
The way I finally set it up for my test cluster was<br>
<ol>
<li>
LUN on SAN</li>
<li>
configured through ESXi as RDM</li>
<li>
RDM made available to OS</li>
<li>
parted RDM device</li>
<li>
pvcreate/vgcreate/lvcreate to create logical volume on device</li>
<li>
mkfs.gfs2 to create GFS2 filesystem on volume supported by clvmd
and cman, etc</li>
</ol>
It works and that's great. BUT the lit says VMWare's vMotion/HA/DRS
doesn't support RDM (though others say that isn't a problem)<br>
<br>
I am setting up GFS2 on CentOS running on VMWare and a SAN. We want
to take advantage of VMWare's High Availability (HA) and Distributed
Resource Scheduler (DRS) which allow the VM cluster to migrate a
guest to another host if the guest becomes unavailable for any
reason. I've come across some contradictory statements regarding
the compatibility of RDMs and HA/DRS. So naturally, I have some
questions:<br>
<br>
1) If my shared cluster filesystem resides on an RDM on a SAN and
is available to all of the ESXi hosts, can I use HA/DRS or not? If
so, what are the limitations? If not, why not?<br>
<br>
2) If I cannot use an RDM for the cluster filesystem, can I use
VMFS so vmware can deal with it? What are the limitations of this?<br>
<br>
3) Is there some other magic way using iSCSI connectors or
something bypassing vmware? Anyone have experience with this?<br>
<br>
Wes<br>
<br>
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