Summary: Re: [ILUG] NBD's, lihux-HA, GFS/GNBD vs. DRBD/heartbeat

[John Moylan]

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Alas, not for AS4. RH only have  the cluster suite (and GFS) for AS3
available as yet. I want to use AS4 because the 3Ware cards have native
drivers in that kernel + their performance is much improved.

The plan of action is to install Centos4 (Final release is out later
today) and stress test DRBD for a couple of weeks. Do the whole disaster
scenario thing.

...Then If GFS is released for AS4 and available for CENTOS4 and DRBD
proves to be unstable. I'll test GFS.

...If DRBD proves to be unstable and GFS is not available, I may revert
to Centos3.4 and GFS.


No promises, but I hope to have the time to put some notes up on the
site when I'm done.

John

Liam Bedford wrote:
| John Moylan wrote:
|
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|> Just forwarding this to the list for completeness, as I seem to only
|> have sent it to Paul yesterday.
|>
|> ...
|>
|> Thanks for all of the feedback. A summary of which follows.
|>
|> *Keep things simple by using user space code where appropriate. Don't
|> use ethernet bonding.
|>
|> *Don't use SMP for IO bound tasks (although in this case I think I will,
|> (for rsync, NFS,SMB overhead. I will be using an enterprise distro
|> CENTOS 4, so I'm not too worried about SMP stability.)
|>
|> *DRBD, GFS/GNBD and EVMS could all candidates for network block devices,
|> (they have not been knocked that is;), I am leaning towards a QA'd for
|> RHAS4 GFS - when it arrives, and I'll be testing DRBD in the meantime)
|
| If you have an AS license, and your RHN login, you can download the ISOs
| from the rhn website.
|
| just an fyi.
|
| L.
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