Re: Kernel NFS on GlusterFS

[Ondrej Valousek <Ondrej.Valousek@xxxxxxxxxxx>]

You say that accessing Gluster via NFS is actually faster than native (fuse) client?

Still I would like to know why we can’t use kernel NFS server on the data bricks. I understand we can’t use it on MDS as it can’t support pNFS.

 

Ondrej

 

From: gluster-users-bounces@xxxxxxxxxxx [mailto:gluster-users-bounces@xxxxxxxxxxx] On Behalf Of Jim Kinney
Sent: Wednesday, March 07, 2018 11:47 PM
To: gluster-users@xxxxxxxxxxx
Subject: Re: [Gluster-users] Kernel NFS on GlusterFS

 

Gluster does the sync part better than corosync. It's not an active/passive failover system. It more all active. Gluster handles the recovery once all nodes are back online.

 

That requires the client tool chain to understand that a write goes to all storage devices not just the active one.

 

3.10 is a long term support release. Upgrading to 3.12 or 4 is not a significant issue once a replacement for NFS-ganesha stabilizes.

 

Kernel NFS doesn't understand "write to two IP addresses". That's what NFS-Ganesha does. The gluster-fuse client works but is slower than most people like. I use the fuse process in my setup at work. Will be changing to NFS-Ganesha as part of the upgrade to 3.10.

 

On Wed, 2018-03-07 at 14:50 -0500, Ben Mason wrote:

Hello,

 

I'm designing a 2-node, HA NAS that must support NFS. I had planned on using GlusterFS native NFS until I saw that it is being deprecated. Then, I was going to use GlusterFS + NFS-Ganesha until I saw that the Ganesha HA support ended after 3.10 and its replacement is still a WIP. So, I landed on GlusterFS + kernel NFS + corosync & pacemaker, which seems to work quite well. Are there any performance issues or other concerns with using GlusterFS as a replication layer and kernel NFS on top of that?

 

Thanks!

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