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Questions tagged [nfsv4]

The tag has no usage guidance.

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7 views

FreeIPA Kerberized NFSv4 Group Membership Issue

We have a FreeIPA domain running with several NFS clients auto-mounting a Kerberized NFSv4 server (krb5p). We're running the latest RHEL 7.6 on all nodes and everything is working great with one ...
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21 views

comparing SSHFS with pNFS [on hold]

We need to compare SSHFS with pNFS(NFS's Extension) with detail and reason and other possible protocols for several storages and one client. We need to know the practical challenges that you had in ...
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42 views

NFS mounting issues

Having a really weird problem with NFS mounts. When I mount my exports on my clients the directory and the files within are readable, but I can't write to the exported directory from the client ...
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27 views

Unable to mount from the newly added second interface of a Ubuntu NFS server

I have a Ubuntu NFS server with single interface (just one IP address i.e 192.168.1.13) configured for both network and storage traffic. To avoid performance issues, I have got the second interface ...
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32 views

Is nfs4_setfacl supposed to be applied from the client machine or server?

I'm really confused on NFSv4, specifically, I don't understand how to set the permissions. When I attempt to use the command nfs4_setfacl I get error message Operation to request attribute not ...
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165 views

nfs problems with jumbo (MTU=9000) but works with default (MTU=1500)

I have a local network set up between two servers running ubuntu 18.04 server. They are connected by a 10G network switch (actually 2 bonded connections 10G each). For performance reasons, in /etc/...
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551 views

mount.nfs: access denied by server while mounting <SERVER_IP>:/mount/test

Have a strange issue with mounting an NFS share. Server: OS Debian 9. /etc/exports: /var/www <CLIENT_IP>(rw,sync,fsid=fd095945-8ace-4f31-b349-91bf805ca2ea,no_root_squash,crossmnt,insecure,...
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167 views

Failed writes after a while on mounted nfs volume

I have mounted an nfs drive on the machine. I can see it with the following command: $ df -aTh | grep nfs … unrelated volumes … 10.200.30.100:/export/pvc-70..1d nfs4 976M 2.0M 907M 1% /var/lib/...
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261 views

NFS Issue w/ one mount (stale file handle)

I have 5 NFS exports from an NFS server. From the NFS client, I can connect to all except one I keep getting "Stale file handle". The only difference I can see is that the NFS exports are on different ...
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1answer
208 views

Does NFS requires a directory with full permission in order to share with other clients?

I have set up NFS share and it is working properly with 770 or 777 permission on the directory but the minute I have the permission for the group like 760 or 750 then it stops work and I can't access ...
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0answers
195 views

NFS server seems to kick diskless nodes off

I'm currently helping setting up a lab that will use diskless nodes for some MPI and CUDA computing. The distribution of choice is CentOS 7. To set up the diskless nodes I've followed the guide here. ...
1
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1answer
228 views

Mounting nested ZFS filesystems exported via NFS

I have a linux (ubuntu) server with a zfs pool containing nested fileystem. E.g.: zfs_pool/root_fs/fs1 zfs_pool/root_fs/fs2 zfs_pool/root_fs/fs3 I have enabled NFS sharing on the root filesystem (...
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144 views

~1000ms 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 ...
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0answers
1k views

“incorrect mount option was specified” when mounting krb5p nfs4 partition on Ubuntu

I have a NFS4 share running with krb5p. I have no problems accessing it from CentOS clients, all that is required is: yum install krb5-workstation setup krb5 (edit krb5.conf, setup keytab) systemctl ...
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108 views

Oracle Linux won't mount CentOS NFS share, but Arch will

I am trying to get kerberized NFSv4 running on our network. Server is CentOS 7. I am able to mount the share on my Arch Linux workstation, but not our Oracle Linux 7 database servers. I am trying to ...
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0answers
347 views

How to access NFSv4 shared folder with Kerberos authentication without root rights

I'm setting up a NFSv4 shared folder with Kerberos authentication. The issue I'm facing is that when the user on the client machine runs mount /mnt (see the fstab configuration below) he's not able to ...
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0answers
64 views

How can I clear active NFS client-side server/volume entries that have become disassociated with any mounted filesystems? [duplicate]

I have a situation where server-side mountpoints sometimes don't show up over NFS with a certain glitchy server. Typically restarting nfsd and/or fiddling with /etc/exports fixes things, but today ...
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0answers
273 views

Permission denied on NFSv4 shared directory with authentication with SSO (OpenLDAP + Kerberos)

I'm trying to set up Single Sign On (SSO) with Kerberos and LDAP but I have an issue with NFSv4 with Kerberos for authentication and encryption (krb5p) service. My environment: 1 server (named ...
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188 views

NFS 'no_wdelay' export option not being applied

I have an NFS server configured and its up and running without an issue. But I need to enable the no_wdelay option on the exports. I have modified the /etc/exports file to be as following(added ...
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0answers
93 views

Can my client ask my NFS server which minor version of NFS4 is available?

Is there a way from a client machine to ask an nfs server which minor versions of NFSv4 are available without actually mounting? I'm trying to programmatically audit which NFSv4 versions are provided ...
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2answers
442 views

How can I identify who is writing to NFS server and where are these writes coming from?

Our CentOS6 NFS export is near 100% capacity. We've turned off NFS for now and are trying to move data around. I temporarily turned it back on with logging on and was surprised to see data roaring ...
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2answers
3k views

How to get NFSv4 idmap working with sec=sys?

I have a Server (Debian) that is serving some folders trough NFS and a Client (Debian) that connects to the NFS Server (With NFSv4) and mounts that exported folder. So far everything is fine, I can ...
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62 views

How to set ACLs so a user can control any dir content, but not the dir itself and not file permissions?

I'm using FreeBSD and ZFS (I think FreeNAS uses NFSv4 ACLs). I want to grant access to a group of users (group name: publicfiles_rw_users) and allow them to modify, create, and delete all files and ...
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1answer
326 views

Nfs4_setfacl reports error on files of mounted folder

I mounted an nfsv4 folder (both client and server are CentOS 7.4) via command $ sudo mount -t nfs -o v4.0,sec=krb5 ark-centos7-ker.qa.arkivio.com:/export/nfs1 /nfs4-mnt-dir created a file via: ...
3
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0answers
2k views

implications of using NFSv4 fsid=0 and exporting the NFS root to entire LAN (or not)

In tutorials on NFSv4 it is common to see the recommendation to export a shared root directory to the entire subnet similar to this from the Arch wiki: /etc/exports: /srv/nfs 192.168.1.0/24(...
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0answers
423 views

Mysterious TCP connection when using NFSv4

When using NFSv4, I expected that all traffic would be on port 2049. This seemed to be the behavior in RHEL6. However, in RHEL7, when a client makes a connection to a server on port 2049, the server ...
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0answers
108 views

NFSv4 mounts showing all entries as directories

Starting around kernel 4.14.10, I noticed a strange issue happening with my NFS mounts where all entries in a directory are being shown as directories if they are mounted with version 4. Here are my ...
5
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1answer
721 views

archlinux netboot diskless node/system, systemd on NFS (v4) fails, rpc.idmapd

updates: 5 (20171209) updates: 5 (20171210) mount -t nfs4 [SERVER IP]:/archlinux /mnt works. ss -ntp | grep 2049 the client establishes a connection to the server before systemd begins. NSF4 id ...
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0answers
242 views

Setting up a kerberized HA NFS share

I'm trying to set up a kerberized NFS share from an HA cluster. I've successfully set up a krb-aware NFS share from a single server, I'm using a mostly identical configuration on the cluster. Exports ...