Questions tagged [nfs]

Network File System (NFS) is a network file system protocol originally developed by Sun Micro systems in 1984, allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed. NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC) system. The Network File System is an open standard defined in RFCs.

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how to debug / resolve issue nfs mount is timing out on client

All, I have two VMs running Ubuntu 18.04.4 LTS. One has been set up to be an nfs server. The other I hope to be a client which I can mount a share from said server. I have followed instructions ...
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How to encrypt nfs which is mounted on AWS ec2

We have netapp volumes attached to EC2 instance. these are nfs , which are sync with on premise and make sure data in on premise and that of NFS which is mounted on EC2 are in sync. even though ...
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How can I restrict access to Linux server shared directories based on groups?

Say I have a shared directory "SHARED" on my Linux server, and sub-directories like "REPORTS", "PROJECTS" etc. "REPORTS" belongs to the group "MANAGERS". Every client in the LAN (LDAP logged-in) ...
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nfs/rpcinfo fails (timed out) on Ubuntu 16.04 server

Trying to establish an NFS mount between some openstack instances, using this ansible playbook. All Ubuntu, server is 16.04, 4.4.0, clients are 18.04, 4.15.0. I have set the security groups to be able ...
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slow read on openzfs/Linux via NFSv3 on Debian 10

because of my unanswered question : qemu snapshot exclude device i decided to use NFSv3 for the VM to handle user data. Because of slow performance of BTRFS after maintance-tasks i use now zfs Raid1 ...
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NFS Stale File Handle After NFS Server Reboots: Why Does This Happen and How Does Industry Handle This?

This problem has been driving me crazy. I have an NFS server with NFS shares mounted on various clients. However, whenever I have to reboot the NFS server, I invariably end up with a bunch of "Stale ...
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set local_lock when mounting volume via NFS on Kubernetes

If I have a volume that mounts via nfs, provisioned with the nfs client provisioner from kubernetes incubator repo, how can I mount the volume with local_lock=posix instead of local_lock=none? When I ...
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rpcinfo: couldn't find a suitable transport

After setting up NFS on a server, rpcinfo -p servername from a client is returning the error message rpcinfo: couldn't find a suitable transport Connectivity is fine, checked with tcpdump. On the ...
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mount.nfs: portmap query failed: RPC: Unable to receive - Connection refused in Centos 7 client

I am trying to connect to a nfs server. where i seeing the below issue. mount.nfs: timeout set for Mon May 11 19:27:01 2020 mount.nfs: trying text-based options 'nfsvers=3,addr=IP' mount.nfs: prog ...
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Strange unexpected slownes in NFS writes with new NFS Server

I recently set up a new nfs server, a proxmox6 VM with ceph as storage backend. The server itself is fast making read/write of > 300MBytes/sec possible on the local filesystems that are exported via ...
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Server Speed for specific appliaction with an mounted network share

I have a windows server running windows server 2019 This server is hosting an emby server [media streaming] The media is hosted an a mounted disk from an s3 provider with rclone When trying to watch ...
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Read only filesystem populated on demand

Basically I have a file system that is accessible both by NFS and ssh. I need a copy of this on my local. But I want to pull only those files that I need (basically cache them on demand). Since I'll ...
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Is rpcbind needed for an NFS client?

I understand that rpcbind runs on NFS servers to respond to port-mapping requests from clients. Is the rpcbind daemon needed on an NFS client? I'm surprised that it is so difficult to find a ...
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How to tell which nfsd thread serves which client? nfsd/client mapping

Is there a way to see which nfsd thread serves which client? Does such a mapping even exist or is a client request randomly distributed among idle nfsd threads?
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NFS server daemon fails to start at boot

I´m trying to export an external disk, so, I configured my nfs-server service to wait for disk1 to mount, however it fails. This is the situation after boot: $ systemctl status nfs-server.service ● ...
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OpenStack redundant shared storage backend solution

Which storage backends are recommended for OpenStack which allows live migration and shared storage? Is it NFS / Ceph / storage backend drivers to commercial storage solutions? Which of these is ...
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Ubuntu Preseed - Netboot installs

I have searched the docs and cannot find any mention of what I am trying to achieve. We have a custom Ubuntu installation that contains scripts, these are called in the preseed config file. We are ...
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Ignoring UIDs altogether with NFS - creating a publicly accessible NFS share

I have an NFS share that only two people have access to, and I cannot get their NFS clients to map the exported share on the server because of permissions. From what I've researched, this is because ...
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Nfs server thread count is increased, but new threads don't start

We're running an nfs-server on RedHat 6.9 Santiago and recently we've experienced large I/O waits on clients. After some troubleshooting we decided to increase the number of nfs threads. After ...
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Windows 2012R2 - showmount -e empty

We have a Windows 2012R2 Standard server with NFS. It has a NFS share that has been used for years. Recently it started to fail (no changes on the server other than Windows Updates). We noticed that ...
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Slow transfer using NFS on one server (Proxmox reason ?)

It was hard to choose topic for my question so I describe my problem. I have two servers with Proxmox (SERVER1 (proxmox version: 5.4-13) and SERVER2 (proxmox version: 5.2-12)) and two NFS servers (...
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a stop job is running for /nfs - server will not shut down

I have an nfs mount on my base system, which, is targeted at a VM on that host. When shutting down the system, the VM went down first and and my base system was stuck trying to unmount the disk: [ ***...
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How to map a NFS share from FreeBSD to Windows 10?

On the FreeBSD side (myserver.net), I have the following /etc/exports: /usr/local/www -rw w10station The daemons a properly configured and running; /etc/hosts points properly w10station to the ...
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How do I configure an NFS server to accept all 172.x.x.x mount requests?

I added this 172.0.0.0/0 in /etc/exports but i dont know if this will work. Is there some other configuration option that can be used for this?
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PosixACL and NFS

Background first, as always. I administer two HPC systems. Both are running the same OS, in the case CentOS 7. They both mount an NFS share that is provided by a server, which has a number of other ...
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Does a distributed filesystem have to consist of multiple filesystems located on different computers?

Does the concept of a distributed filesystem require a distributed filesystem to consist of multiple filesystems located on different computers? Does an NFS filesystem consist of only one filesystem? ...
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NFS volume mounted over WAN & MPLS link down issue will make server only reboot allow re-mount possible

I have a centos 7 server which is getting NFS mount from other site over wan ( not good design ) , when the MPLS link breaks for 5 to 7 min, we tried umount -l , but the server does not able to re-...
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Do distributed file systems partition a file across nodes?

In HDFS, a file is partitioned into blocks which are distributed across several nodes. I am wondering if that is also true in the following distributed file systems: NFS, Andrew File systems (and ...
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Tracking down disk space usage on a machine with docker network volumes

I have an Ubuntu server 16.04 VM running my docker containers. It has a relatively small disk (~60GB) which I thought would be fine because I have dedicated NFS storage that I mount via docker to the ...
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Azure files with Network File System

I have to run Moodle production servers in Azure. Need to keep userdata (moodledata folder) in a common location like NFS for better management and scalability. I tried Azure Files-SMB service (...
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Safely update configuration file stored on NFSv3 mount

I have a configuration file config_file that is stored on an NFSv3 network mount, and I would like to update that file safely. Here are the conditions and restrictions that I'm working under: There ...
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kernel error message related to memory

Hello I am new to this world. I have these messages on the storage server and compute nodes. The whole cluster gets slow or does not response. How I can handle with this problem? I am using CentOS 7.5 ...
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366 views

Amazon EFS performance mounted for a k8 cluster of ec2 instances with small frequent writes [duplicate]

How performant is a shared mounted EFS if there are multiple ec2 instances with multiple containers all writing to separate files in separate directories? Can write performance on one container be ...
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Setup GID and UID for Microsoft Identity management for Unix

As part of requirements for a software running on CentOS 7 utilizing NFS partation on EMC isilon OneFS as storage, I have to setup RFC2307 correctly on all our Active Directory Domain Controllers. NFS ...
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Best practice for doing a bind mount of an NFS share with squashed root?

I want to run the following, as an example: docker run -v /mnt/test001/:/mnt/test001/ hello-world However, on the host, directory /mnt/test001/ is an NFS mount with squashed root. In other words, my ...
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Share applications to many computers using NFS

We want to set up a computer lab with about 10-15 PCs and to run Ubuntu at a college. Then, we want to install programs mainly for engineering/research/numerical computations. To ease the management ...
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Mounted file server slow

There is a file server with home accounts of users and that is NFS mounted on other servers on the network. All servers are running CentOS 6. Users login to these other servers(eg. server-19) where ...
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nfs file sharing mounted, but folder is empty

I'm using Windows Server 2019. I created an NFS file share with anonymous access. nfs file sharing configurations When I try to mount the file share from the same windows server, it looks like the ...
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172 views

Permission Denied on NFS mount through SSH remote tunnel

I successfully exported a directory from a CentOS 7 server to a CentOS 6 server(I used * in /etc/exports (as opposed to the server's IP). But I can't seem to find solutions that work for me to export ...
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135 views

flock fails on shared NFS for exclusive blocking locks from 2 different maschines

I use PHP flock() (which uses the system flock) on systems with shared file system via NFS. The flock() fails when I use EXCLUSIVE, BLOCKING lock to access the same (shared) file on 2 servers. Of ...
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Why can't mount nfs server from client?

Follow these two guides installed NFS server and client: https://www.howtoforge.com/nfs-server-and-client-on-centos-7 https://www.howtoforge.com/tutorial/setting-up-an-nfs-server-and-client-on-centos-...
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Win10 NFS Client a SAMBA Killer?

We finally got the last of our recalcitrant Windows 7 users to Windows 10 thanks to MS' recent withdrawal of support from the former, so the entire enterprise now is either Ubuntu 18.04 or Windows 10. ...
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How to Setup Redundant Network in VMware 6.5 with NFS?

I would like to setup full redundancy between an ESXi host (6.5) and multiple NFS datastores with the following conditions: Two separate (unstacked) switches used, and either can go down without ...
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Difficulty with restricting specific NIS users to certain NIS clients

I would like to restrict access of certain users on my NIS setup to particular NIS clients. I have seen in several other posts that the ideal way to do this is with netgroups (Disable nis login for a ...
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hang/freeze NFS home directories with LDAP

I have two servers, one CentOS 7 for computation with more than 170 cores and one Solaris 11.4 for storage with more than 120TB ZFS. They are connected with through QSFP+ direct link and all that is ...
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35 views

How can I create or access a remote file as if it were local?

In general, I would like to run local programs on remote files provided to me via a distributed file system (e.g. samba, NFS or whichever you recommend), and I want to access the remote files in a ...
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Loopback NFS mount in RHEL

For a long time, NFS loopback mounts were not supported in RHEL 3/4/5 and other enterprise Linux distribution (as SUSE). The cause was a possible, near-unavoidable deadlock when facing memory pressure....
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Restrict access to folders within an NFS share with a Kerberos ticket?

We want to export users' home directories using one NFS share but, obviously, we don't want to allow users to be able to access other users homedirs. So say we have user a, and the NFS shared ...
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158 views

Mounting multiple NFS exports to the same client directory

I am running into an issue with NFS that I am not sure how to solve. I have spent a bit of time trying to find an answer but was not successful. I am ultimately trying to achieve the below setup ...
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173 views

Can not start nfs-server on centos 7 lxc container

I have Linux Mint 19.2 Tina with 4.15.0-54-generic kernel on host and lxc version 3.0.3. Problem is that I can not start nfs-server in container. Steps that I do: $ sudo systemctl stop apparmor $ ...

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