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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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Can 2 servers share the same ocfs2 FS via NFS?

The problem is the following: I have 2 servers that have a FS mounted as ocfs2: root [server01]% mount | grep ocfs2 ocfs2_dlmfs on /dlm type ocfs2_dlmfs (rw) /dev/sddlmam1 on /share type ocfs2 (rw,_netdev,datavolume,heartbeat=local) and root…
X3MBoy
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Kerberos keytab for NFS doesn't work if not created in server

I'm trying to mount a directory into a client server using kerberos authentication. If I create a keytab file using using kadmin in the server, I cannot get authenticated when I mount the directory. sudo kadmin -p root/admin -w $KERBEROS_PASSWORD…
Jorge Silva
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Oracle Linux won't mount CentOS NFS share, but Arch will

I'm trying to get kerberized NFSv4 running on our network. Server is CentOS 7. I'm able to mount the share on my Arch Linux workstation, but not our Oracle Linux 7 database servers. I'm trying to mount from testdb with the command: mount -v -t nfs4…
Dessa Simpson
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Mount NFS4 share as different user

I have an AWS EFS NFS4 share (shareA) that is mounted by some servers where all files are owned by userA/uid=800. I'd like to mount that share onto the b-series servers, configured to look like userB/uid=900 owns all of the files. How can I do…
spiffytech
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PHP is_writable always false on NFS

Sorry, I'm not sure, if this is the correct forum because I don't know the cause for the issue, I'm facing. I installed NextCloud on a Raspbian (Stretch 9) and moved the data directory to a mounted NFS folder. When I try to access NextCloud, I got…
allwi
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Infiniband configured and connected but indicator lights unlit on HBAs and no functionality in OS

I have installed two dual-port FDR Infiniband VPI HBAs, one in each of two servers running CentOS 6.9, server1>lspci 03:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3] server2>lspci 81:00.0 Network controller: Mellanox…
rg6
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High CPL resolved temporarily by NFS restart

CentOS 6.9 I've got an NFS (v4) file server whose exports started becoming very slow to respond on clients today. While this is happening, the exported volumes are not slow on the server itself. atop shows very high CPL values (> 100). Otherwise…
Michael S
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NFS v4 server is causing stale file handle, but only when bind mount is a subdirectory

This problem is basically driving me insane, at this point. I have an Ubuntu 16.04 NFS server that was working fine with this configuration: /etc/fstab: UUID=b6bd34a3-f5af-4463-a515-be0b0b583f98 /data2 xfs rw,relatime 0 0 /data2 …
pgoetz
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Is Samba 4 a good alternative to FreeIPA?

Our goal is to set up one file server / print server on a small LAN. To solve file permissions issues and access issues we have encountered, we believe a type of LDAP solution should be part of this. Two of the solutions we are considering…
MountainX
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How to debug nfsrootfs not booting issue

We have Beaglebone black based custom board with 4GB eMMC and 256MB RAM. We use network boot for putting software on eMMC for very first time. For this purpose we have configured ubuntu PC for network boot(tftp and nfsrootfs). It acts as tftp and…
ART
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NFS not mounting on boot

I have an AWS EFS that I want my Centos 7 server to mount on boot. The line from /etc/fstab that is meant to accomplish this is: xxxxxxx.efs.us-east-1.amazonaws.com:/ /mnt/EFS nfs4…
TheGentleman
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What shared, high volume storage technology should be used when hosting in Google Cloud?

Given an auto-scaling web server farm setup that needs access to a very large number of image files, we are currently using Google Cloud Storage with a mounted FUSE folder on each web server so that the same set of shared files can be accessed. The…
sean2078
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Configuring NFSv4 anonymous ownership mapping (idmapd.conf) per subtree or mount?

The NFSv4 idmap approach allows a great deal of flexibility in terms of how users and accounts are mapped between the NFS server and the local system -- but with this comes significant configuration complexity. If trying to build a turnkey solution…
Charles Duffy
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NFS user mapping where user is AD authenticated, but NFS server user local accounts

Server : CentOS 7.3.1611, with NFS4 enabled. In /etc/idmapd.conf Domain = my.domain.com Local user is created as 'user' and a directory is exported over NFS: /home/user/Documents Client : Fedora 25, which has been joined to an AD Realm:…
The Rifter
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NFSv4 server Errors

I have an nfs server exporting /homes and clients mount this using sssd and ldap. Everything works fine. But, i recently created a central rsyslog server and all my nodes log to this server and I found a couple of error messages as…
Bhargav
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