Rob van der Heij wrote:
On 2/2/06, Phil Tully <[EMAIL PROTECTED]> wrote:
Only one server would attempt (according to the application developer)
to write to any specific file so file level locking would not be required.
You're right that the NFS server would be a single point of failure.
Real solutions come with a primary host and a recovery server that can
become primary host because of what it learned while following the
transactions. And with moving a virtual IP address from one server to
the other the impact can be minimal. Tivoli SA plays in this area.
But if each server is writing his own file, would it be an option to
have each server keep the file on his own local disk but export it
(via NFS) to all the others who must see it?
Could each server keep others informed using an UDP broadcast, much as
mdnsresponder (Apple Rendezvous/Bonjour) does?
Everyone interested would be listening on a multicast address, and
everyone with something to say would be sending to it.
--
Cheers
John
-- spambait
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