Fwd: Re: PSQL, Mosix is unuseful

Hello everyone,

no hope to use PostgreSQL + Mosix, because PostgreSQL uses shared memory, as 
such it's not suitable for migration.

Mosix isn't able now to give us a single system image, where a cluster of 
machine acts as a single transparent machine.

I'm trying DIPC+GFS to do this, i've patched the 2.2.17 linux kernel with 
DIPC , changed PostgreSQL sources to create distributed shared memory and 
semaphores (postgres uses only sem and shm), next steps are to try to 
start-up (the changed) postgres to use this  distibuted ipc and a central 
location for datafiles (GFS , NFS?, or a thing that permits a shared fs with 
flock and fcntl) , then do a simple connect script that , for example , do a 
round-robin connection to the different postgresql servers on the machineS.

DIPC has not a failover mechanism now.

Ideas?

bye
valter



>From: Johan Sj�holm <Netmaster@streetwise.se>
>To: "Mosix List" <mosix-list@cs.huji.ac.il>
>Subject: PSQL
>Date: Wed, 1 Nov 2000 14:09:34 +0100
>
>Hello everyone,
>
>Anyone that has tryied PostgreesSQL under Mosix ? How well does it run ?
>Just checking before I get going whit it;)
>
>And I am also going to run Apache on those machines, will that work any 
>good ?
>
>Whit friendly Regards
>
>- Johan
>
>
>--
>To unsubscribe, send message to mosix-list-request@cs.huji.ac.il
>with "unsubscribe" in the message body.
>

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