[H-GEN] any ideas for cluster filesystem solution ?

[Martin Pool]

On 13 Nov 2000, Craig ARMOUR <c.armour at uq.net.au> wrote:
> > > work well.  ( Solaris does it easily ! :) 
> > 
> > How does it coordinate access to the disks without SAN level locking?
> > I believe you when you say Solaris can do it, but I'm curious.
> 
> well... it doesn't really .  You still need to get the ( Sun Supported
> ) third party product to get it all happening.  I shouldn't have said
> solaris does it easily 'cause it doesn't.  it's easier then getting linux
> to do SAN though ;)

Thought not.  Without locking, I suppose you might be able to manage
to have one side mounted read-only if it snooped every network write
and if the network writes were carefully ordered.  Possibly the second
is already true on Solaris, though it would give them a hefty IO
performance loss.  I don't think you'd even have the atomic ops
necessary to do lock-free structures in the filesystem.

What's the 3rd party product?

-- 
Martin Pool, Linuxcare, Inc.
+61 2 6262 8990
mbp at linuxcare.com, http://www.linuxcare.com/
Linuxcare. Support for the revolution.
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