[gpfsug-discuss] AFM gateways
Venkateswara R Puvvada
vpuvvada at in.ibm.com
Wed Apr 12 10:53:25 BST 2017
Gateway node requires server license.
~Venkat (vpuvvada at in.ibm.com)
From: Matt Weil <mweil at wustl.edu>
To: <gpfsug-discuss at spectrumscale.org>
Date: 04/11/2017 01:46 AM
Subject: Re: [gpfsug-discuss] AFM gateways
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Thanks for the answers.. For fail over I believe we will want to keep it
separate then. Next question. Is it licensed as a client or a server?
On 4/10/17 6:20 AM, McLaughlin, Sandra M wrote:
Hi,
I agree with Venkat.
I did exactly what you said below, enabled my NSD servers as gateways to
get additional throughput (with both native gpfs protocol and NFS
protocol), which worked well; we definitely got the increased traffic.
However, I wouldn’t do it again through choice. As Venkat says, if there
is a problem with the remote cluster, that can affect any of the gateway
nodes (if using gpfs protocol), but also, we had a problem with one of the
gateway nodes, where it kept crashing (which is now resolved) and then all
filesets for which that node was the gateway had to failover to other
gateway servers and this really messes everything up while the failover is
taking place. I am also, stupidly, serving NFS and samba from the NSD
servers (via ctdb) which I also, would not do again !
It would be nice if there was a way to specify which gateway server is the
primary gateway for a specific fileset.
Regards, Sandra
From: gpfsug-discuss-bounces at spectrumscale.org [
mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Venkateswara
R Puvvada
Sent: 10 April 2017 11:56
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] AFM gateways
It is not recommended to make NSD servers as gateway nodes for native GPFS
protocol. Unresponsive remote cluster mount might cause gateway node to
hang on synchronous operations (ex. Lookup, Read, Open etc..), this will
affect NSD server functionality. More information is documented @
https://www.ibm.com/support/knowledgecenter/STXKQY_4.2.2/com.ibm.spectrum.scale.v4r22.doc/bl1ins_NFSvsGPFSAFM.htm
~Venkat (vpuvvada at in.ibm.com)
From: Matt Weil <mweil at wustl.edu>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 04/07/2017 08:28 PM
Subject: [gpfsug-discuss] AFM gateways
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Hello,
any reason to not enable all NSD servers as gateway when using native
gpfs AFM? Will they all pass traffic?
Thanks
Matt
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