The question about distributed file system

[Brad Dameron]

----- Original Message ----- 
From: "K Kopper" <karl_kopper at yahoo.com>
To: <lvs-users at linuxvirtualserver.org>
Sent: Tuesday, June 06, 2006 4:00 PM
Subject: Re: The question about distributed file system


> --- dreamping <dreamping925 at gmail.com> wrote:
>> To share the data behind the realserver,I want to
>> use SAN,should i use NFS
>> or DFS(distributed filesystem)?and which DFS is
>> appropriated for LVS and
>> SAN.
> 
> 
> To share files on the real servers and ensure that all
> real servers see the same changes at the same time a
> good NAS box or even a Linux NFS server built on top
> of a SAN (using Heartbeat to failover the NFS server
> service and IP address the real servers use to access
> it) works great. If you run "legacy" applications that
> perform POSIX-compliant locking you can use the
> instructions at http://linux-ha.org/HaNFS to build
> your own HA NFS solution with two NFS server boxes and
> a SAN (only one NFS server can mount the SAN disks at
> a time, but at failover time the backup server simply
> mounts the SAN disks and fails over the locking statd
> information). Of course purchasing a good HA NAS
> device has other benefits like non-volatile memory
> cache commits for faster write speed.

I am using RedHat GFS with my SAN to do file sharing. Works great.

Brad Dameron
SeaTab Software
www.seatab.com