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Questions tagged [nfs4]

Network File System version 4 (NFSv4)

NFS Version 4 (RFC 3010, December 2000; revised in RFC 3530, April 2003), influenced by AFS and CIFS, includes performance improvements, mandates strong security, ACLs, locking and introduces a stateful protocol. Version 4 became the first version developed with the Internet Engineering Task Force (IETF) after Sun Micro systems handed over the development of the NFS protocols.

NFS version 4 minor version 1 (NFSv4.1) has been approved by the IETF and received an RFC number 5661 since Jan 2010. The NFSv4.1 specification aims:

To provide protocol support to take advantage of clustered server deployments including the ability to provide scalable parallel access to files distributed among multiple servers (pNFS extension). to provide sessions and Exacely One Semantic (EOS)

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EFS NFS performance on LIST operations

I have an AWS EFS drive mounted on a FTP server. I am seeing issues where performance becomes really poor occasionally. The public directory has about 10,000 small text files and under heaviish traffic (~30-40 concurrent users) the FTP LIST…
AdoEs
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NFS client intermittent performance issues (backlog queue wait?)

I have a weird issue with one of the NFS clients (Ubuntu 16.04 LTS). I have been working for the past few days to try and debug this, but so far without success. After I mount the partition, everything works perfectly for a few days, transfer speed…
Tony
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Does nfs persisent volume mount work in a single node kubernetes cluster?If so,how?

I have tried with the volume type 'Hostpath' and it worked fine.Apart from 'HostPath' are there any other volumes supporting single node cluster?
Nishanth Sunkireddy
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Diagnosing NFSv4 Authentication Issues

I've got a couple of NFSv4 shares (with Kerberos authentication). Most of the time they work quite well, but when there's an issue they can be a pain to fix. I put this down to them being quite opaque as far as internal operations and error messages…
Adam Luchjenbroers
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rsnapshot through nfs: failed to preserve ownership|cannot access errors

Trying to rsnapshot to an nfs share I get some ownership and access errors, even if I can visibly do any operation on my shares with UID 1000 and GID 1000 on both server/client. Server exports /etc/exports # Data (insecure for MACOS…
Philippe Gachoud
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Contents of NFS folder disappear after application attempts to read it

I recently ran into an issue with nfs on my nfs clients related to one specific shared directory. None of the applications I use (Sonarr & Plex) which are both on different VMs are able to read the contents of a certain directory and when they try…
Richard Bale
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~1300ms latency touching file on nfs mount

I have an NFS mount where the server is on the same subnet as the client. When I time touch testempty from the client, I get: touch testempty 0.00s user 0.00s system 0% cpu 1.325 total The time follows an bizarre pattern - Most of the time it's…
Dessa Simpson
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Would a firewall occasionally disconnect an CentOS 7.3 NFS client?

When large read and write operations are conducted on a NFSv4 share on a CentOS 7.3 client, I notice that the NFS mounts often time out. Does a fresh, out-of-the-box installation of CentOS 7.3 require letting the NFS service through the default…
user260467
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NFS w/Kerberos - Network change broke auth?

So, I've recently changed my network setup a bit, and for reasons I'm still trying to suss out replacing the old router with a new PFSense box appears to have broken the authentication within the network somehow. The network setup uses a Kerberos…
Adam Luchjenbroers
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How to fix accumulating NFS DELEG locks necessitating a hard power-down of the client?

Our legacy production system has a data server and a compute client that interact via NFSv4; both run on VMWare virtualization. We have determined that as the compute client’s software runs, over the course of days, the number of DELEG locks (as…
user6296589
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NFSv4 and different port

Is it possible to start NFSv4 server on different than default (2049) port? I searched the web for nfs-kernel-server and RPCMOUNTDOPTS, but did not find any configuration options. My setup uses Debian 9 and standard NFS client / server from apt.
mvorisek
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How to solve NFS cross-mounting ordering "dead-lock"

I have 3 NFS servers, all basically doing cross mounts, e.g.: Server "A" mounts from "B"/"C" Server "B" mounts from "A"/"C" Server "C" mounts from "A"/"B" Obviously this creates a rather annoying challenge when bringing up the entire network (e.g.…
damageboy
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Why NFS4 client is trying to contact portmap service?

After upgrading Debian from wheezy to stretch I have a problem with mounting nfs4 volume. Before the upgrade the client did not try to contact portmap service (port 111), and after the upgrade it tries to do that before anything else and fails…
Furgas
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NFS4 ubuntu: ls -al shows nobody:nobody

On Ubuntu (xenial aka 16.04) all clients show dir and file owners in all NFS4 mounted directories as nobody:nobody. User and group database comes via sssd from ldap, both client and server use the same ldap sources/trees and getent passwd $user,…
OhaMett
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NFSv4 client unable to mount export containing brackets or spaces but works on NFSv3

There is an issue with NFSv4 when you try to mount a path containing a space and or a bracket character. NFSv3 works fine using the path that uses a symbolic link to the actual folder and NFSv4 does not. I am unable to change the Dropbox…
Brad
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