We get lots of questions about NFSv4, especially for the security and locking aspects.
The main issues people see with it are performance (especially with high metadata workloads) and complexity in setup.
It’s a stateful protocol, so it also sees disruption during failovers.
Mostly, people use it for the following reasons:
- Their business makes it a requirement for the security
- They have an application that requires it for the locking
- They want ACLs
- They only want to open up a single port over a firewall
If you just want it for ACLs, ONTAP allows you to set v4 ACLs and still use NFSv3:
https://whyistheinternetbroken.wordpress.com/2017/08/11/nfsv4acls-nfsv3mounts/
From: Toasters <toasters-bounces@teaparty.net> On Behalf Of
Sebastian P. Goetze
Sent: Friday, October 2, 2020 3:26 AM
To: Douglas Siggins <siggins@gmail.com>
Cc: Toasters <Toasters@teaparty.net>
Subject: Re:
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I teach NetApp and do have students once in a while using NFS v4, but usually only when necessary, e.g. routing through firewalls (which in my experience seems to be the #1 reason using v4). I did have people using pNFS in production, but
that's rare.
Some are evaluating, though. Maybe when multipathing is supported (regular like VMware, not pNFS), there will be an uptick in adoption...
Greetings from Northfriesland
sent from my mobile, spellchecker might have messed up...
Yes, thanks folks. It appears there's not much v4 out there as suspected.
---------- Forwarded message ----------
From: Jeff Cleverley <jeff.cleverley@broadcom.com>
To: Wayne McCormick <Wayne.McCormick@sjrb.ca>
Cc: Toasters <toasters@teaparty.net>
Bcc:
Date: Wed, 30 Sep 2020 18:03:42 -0600
Subject: Re: Any Openstack/Netapp FAS deployments w cinder NFS, v3 or v4
Wayne,
Just so you know your posts are working, I'll reply. I have no experience with that at this point in time. Personally I don't see an issue posting to ensure the NetApp configurations are correct or compatible with the configurations.
I hope I’m doing this right… (posting to the list I mean).
I have four MySQL servers using NFSv4, but not with krb5. The rest of the environment is v3.
We did do a pilot with OpenStack Container Platform and we used v3 (v4 was enabled, so it may have used it) provisioning via Trident with success. We also used Trident to provision
iSCSI volumes. Worked quite well.
Hope that helps a little.
Wayne
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Crickets ? :)
Alright let us remove openstack qualifier. Does anyone use v4 or know anyone that does with Netapp FAS?
Greetings,
Just reaching out for experiences on Openstack deployments with Netapp NFS. Are you using the default v4 or have switched the mount options to v3? We have a pretty good base of
ISCSI, but based on performance and manageability are considering making the jump.
Speaking of NFSv4, outside of openstack has anyone made any large deployments? Is it as solid as v3? using uid/gid, is anyone using sec=krb5?
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Jeff Cleverley
Factory Systems Engineer
Building 1, Dock 1
Fort Collins, Colorado 80525
970-288-4611
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Date: Thu, 1 Oct 2020 01:04:02 +0100
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