Re: [K12OSN] CODA filesystem for redundant backend NFS servers
Eric Harrison (eharrison@mail.mesd.k12.or.us)
Sun, 20 Oct 2002 10:34:12 -0700 (PDT)
On Sun, 20 Oct 2002, Hans Ekbrand wrote:
>On Sun, Oct 20, 2002 at 02:08:18PM +1300, Steve Wright wrote:
>> Howdy All.
>>
>> I have been wondering how to have failover/redundant NFS servers (for
>> multiple Terminal Server installations..)
>>
>> I think rsyncing content between the NFS servers will be a file-locking
>> nightmare, especially if a user logs in more than terminal..
>>
>> Any thoughts on using a proper distributed filesystem such as CODA ? I
>> see K12LTSP v2.1 is CODA-ready (`modprobe coda` works fine.)
>>
>> I also note that LVS will do NFS no-problem.
>
>IMHO CODA (just as the LVS-thingy discussed earlier) might turn out to
>be overkill. Network bandwidth is AFAIK the ultimate bottleneck, and
>therefore you will not need more than a couple of LTSP servers sharing
>the load of all terminals.
>
>If you have, say, two servers wouldn't CODA be an overkill?
>
>Don't let my opinion stop you from investigating further, though.
I haven't looked into CODA. Their documentation scares me off:
http://www.coda.cs.cmu.edu/misc/stability.html
"What is the current status?
I'd say a small userbase (20-30 users) and a few servers are pretty
workable. Such a setup has been running here at CMU for the past
couple of years without significant disasters.
Don't expect to easily handle terabytes of data or a large group of
non-technical oriented users."
InterMezzo looks more promising for K12LTSP to me, http://www.inter-mezzo.org/
One of these days I may even carve out some time to try it ;-)
-Eric
_______________________________________________
K12OSN mailing list
K12OSN@redhat.com
https://listman.redhat.com/mailman/listinfo/k12osn
For more info see