(Sending to the users list, although since this relates to linux 2.6
and OpenSSI 1.9, it may also be appropriate to the devel list as well,
but its more of a user issue than a devel issue)
I'm looking at implementing an OpenSSI cluster under Linux 2.6 (Yes,
I know that OpenSSI 1.9 isnt out yet, but I'm quite used to running
stuff from CVS *grin* and I'm not quite ready to implement the cluster
I've read thru the docs that are avaliable on the website, and what
Im thinking of doing is having a couple of init nodes holding all the
filesystems, and a number of "computational" nodes doing all the
First question that comes to mind is that some of my nodes aren't
likely to be identical hardware. Infact, some are likely to be single
processor, and others dual processor boards.
Is there a way to have different kernels for different nodes in the
cluster, or do they all get the same kernel ? Obviously different
hardware (eg netwok cards) could be handled thru modules, but SMP vs
Uni processor is a little fundamental.
[I guess I could just run an SMP kernel on a UP box, but I seem to
remember health warnings about doing that]
Second question I have relates to the file systems. As I understand it,
the first node's filesystems are seen by all the other nodes in the
cluster. I further understand that you can duplicate the data onto
other nodes for failover and redundancy purposes using drbd.
I'd like to use LVM, and the underlying device mapper to provide some
software RAID. The logical volumes are just block devices, so I guess
it should "just work", but can someone confirm or correct my understanding ?
Am I correct that I would use the /dev/drbd device to mount the
filesystem at that point on the second node ? What about on the initial
Third, and final question, what userspace tools are avaliable for
viewing and managing the state of the cluster ? I know about OpenSSI
Webview, but are there any other similar tools ?
Thanks in Advance, and All the Best
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