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 ...

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User Unable to Change Group Owner of File on NFS

I've created a user, say testuser, with a home directory located in /home-nas/t/testuser/. I've added testuser and testuser1 to a group called testgroup and asked each user to log out and log back in. ...
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2k views

FOG Server NFS Issue

I am having an issue with the Free Open Ghost server. I set it up on Ubuntu server, and have Ubuntu mounting an SMB share to it's /images directory (my server has a small internal boot disk). Fog's ...
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2answers
32k views

“Stale NFS file handle” after reboot

On the server node, it is possible to access an exported folder. However, after reboots (both server and client), the folder is no longer accessible from the clients. On server # ls /data Folder1 ...
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Lustre alternative for 70-node scientific cluster

Our lab has a cluster with 70 compute nodes 4 IO nodes Infiniband QDR interconnection 12T disk array accessed using IB SRP protocol The major application is debugging and running MPI-based ...
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1k views

FreeBSD 10: NFS unable to export folder

I am unable to export a folder using NFS. /etc/exports /storage/test -maproot=nobody client /storage/test1 -ro -maproot=nobody client /storage/test2 -ro -maproot=nobody client The first folder ...
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25 views

NFS client fails with “Protocol not supported” even though the protocol is listed as available

I set up an NFS serve for Proxmox to remotely backup VM images there. For some reason the Proxmox box won't connect to the NFS server. I tested connecting with another the NFS client on a different ...
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11 views

FTP Transfers Dropped- 421 time out

I have a VM that is mounting two NFS servers, lets call them NFS-A and NFS-B. The VM will transfer a file from NFS-A to NFS-B and as it should the VM will be the middle man as the file transfer ...
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2answers
2k views

NFS on Btrfs on multi-devices .vs. Glusterfs on distributed-volume?

I considering a storage for Email. This storage system run on my own private cloud (already replicated), then i does not care about replication. I'm thinking about 2 options: 1- I will create few ...
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1answer
3k views

Amazon Linux AMI for NFS between multiple EC2 servers

So I've been trying to create a Dropbox like system to allow multiple EC2 instances to work with the same files. I'm writing the programs that actually modify the files myself, and I'm not worried ...
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1answer
2k views

Netboot Debian (wheezy) from NFS v4

Is it possible to boot Debian Wheezy from NFS v4? Bootwing with NFS v3 works just fine. NFS v4 not. This is in my /etc/exports: /nfs ...
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1answer
32 views

How to use pNFS in NFSv4.1

As I know, pNFS is an extended protocol over NFSv4.1. So, I have two questions: How to use pNFS in NFSv4.1? Is there any special requirement for kernel version in server side?
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21 views

SAN - NFS and CIFS

I am an application developer and very new to storage and SAN technologies, So this is a very basic question. Recently I had a requirement to have common storage share mounted on both Linux and ...
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2answers
524 views

Cannot find NFS server logs on CentOS 6.5

I cannot find the logs for a NFS server on a CentOS 6.5 machine. grep -Rni "nfs" /var/log/messages returns nothing useful. The NFS service is running and I am able to mount the NFS share from most ...
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3answers
13k views

centos 6 nfs: logs not showing anywhere

Can someone please tell me where NFS logs in centos 6? Or perhaps where I can tell NFS to send logs? At the present time, there appears to be no such setting. Trying to get the thing to work without ...
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0answers
16 views

anonymous cifs client can't read files created with nfs

I'm sharing a windows folder using both nfs and a windows share. The windows share has read permissions for Everyone. The nfs share has write permissions (with "Allow root access") for a specific ...
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1answer
1k views

Mounted NFS directory not writable by Apache / PHP

Need some help here with NFS. Here's what I have (all servers running CentOS 5.6 with SELinux): 172.17.20.1 - Primary server with static IP. Varnish redirects requests to the web servers. 172.17.20.2 ...
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1answer
1k views

Intermittent NFS lockups on Isilon cluster

We have an Isilon cluster with 8 IQ 12000x nodes which exports storage via several NFS shares for a handful of Linux and Solaris clients. There is a Linux system that has one of these NFS filesystems ...
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1answer
138 views

Can Mac OS X extended attributes be stored across NFS to a Linux ext4 filesystem?

MacOSX filesystems use extended attributes (e.g. "com.apple.quarantine", "com.apple.FinderInfo"): $ ls -l@ .DS_Store -rw-r--r--@ 1 gareth staff 18436 2 Nov 10:35 .DS_Store ...
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1answer
2k views

Why does the “nocto” NFS mount option in Linux not prevent flush-on-close?

I've been learning about the close-to-open policy of NFS, which causes each file to be flushed to the server as it's closed, to ensure consistency across clients. (See ...
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1answer
34 views

Mounting Windows NFS share from RHEL7 - uid/gid show as 4294967294

I need to mount a directory on a Windows Server 2012 system with rw access for local user apache. If I mount with defaults: server2012:/sharedir /appfolder nfs defaults ...
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1answer
1k views

NFS fails to mount through openvpn tunnel

I am trying to establish an nfs connection through an openvpn tunnel. It really anoying and i dont know what to try next. The connectein test has been made on several platforms now. used ...
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1answer
1k views

NFS mount mounted inside another NFS mount disappears randomly

I have quite an odd issue where my nested NFS mounts just disappear randomly from time to time. The fstab entries look somewhat like this: nfs:/home /home nfs ...
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2answers
2k views

How to achieve multiple NFS/TCP connections to the same server?

I'm trying to maximize the NFS/TCP bandwidth between a Linux client and a single NFS server over a 10Gbps link. Although each NFS mount has its own device (major/minor), everything comes down to a ...
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1answer
2k views

NFS lock not working properly

I'm getting the following error on an oracle database. ORA-27086: unable to lock file - already in use It tries to lock a file that resides in an NFS mount. The NFS is on a loopback setup (long ...
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3answers
2k views

Systemd: start a unit after another unit REALLY starts

In my particular case I want to start remote-fs unit after all glusterfs completely starts. My systemd files: glusterfs target: node04:/usr/lib/systemd/system # cat glusterfsd.service [Unit] ...
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2answers
27 views

For *nix server/Windows clients, what are the pros and cons of modern NFS v. Samba/SMB?

As the question says. There's a lot of threads around on NFS vs. Samba/SMB, but a lot of them are outdated or refer to old security models, or just give a one-line "use SMB with Windows". Both ...
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1answer
37 views

Different IOPs measured on server and storage

so I have this strange behavior that I can not explain to myself - hopyfully someone here can. We received some server (hardware) and mounted an NFS drive. We plan to use these servers as Splunk ...
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1answer
1k views

NFSv3 + ACL: mask is gone on clients

I'm sharing a NFS folder among a user group. The default umask on the clients is 0700, and this is a problem because newly created files won't be readable/writable by another users. So, I'm using ...
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1answer
2k views

CentOS 5.4 NFS v4 client file permissions differ from original files & NFS Share file contents

Having a strange problem with NFS share and file permissions on the 1 out of the 2 NFS clients, web1 has file permissions issues but web2 is fine. web1 and web2 are load balanced web servers. So ...
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2answers
1k views

Mounting NFS3 using Kerberos and AD

I've got a Linux server (Centos 5.6) that needs to automount home directories from a Windows (Server 2008) NFS share using Kerberos. The share mounts (with the nobody user and group) if authentication ...
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1answer
17 views

Not able to mount shared drive on server A to server B

I am not able to mount a drive that is located on server A to server B. I have followed this document step by step just replacing portmap to rpcbind as the system installed rpcbind instead of portmap. ...
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1answer
27 views

NFS - Multiple sub dirs - Only one squashing as expected

Getting an unexpected behavior when mounting more than a single share. NFS Server $ -> cd /mnt/raid/nas && ls -lZa drwxrwxr-x. nas filer unconfined_u:object_r:file_t:s0 file ...
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1answer
29 views

NFS vs AFS cache validation

NFS clients revalidate cache blocks on access by evaluating T-Tc < t. If this fails it sends a getattr call to the NFS server asking for the last Tmodified stamp of the relevant file. AFS ...
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1answer
1k views

ZFS, NFS and Nexenta

Is this message familiar to someone ? zfs-clu-01a rpcmod: [ID 851375 kern.warning] WARNING: svc_cots_kdup no slots free zfs-clu-01a last message repeated 75220 times We have a lot of trouble ...
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20 views

Testing Custom Linux Backup Script Which Connects to NFS Windows Share

Good morning, I have configured server for NFS on Windows Server 2012 R2 and I have created and shared an NFS share. Access permissions are configured using the NFS shares NTFS permissions. We have ...
2
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1answer
2k views

NFS mounts not visible for other users in system

Recently I faced an issue of limited visibility of mounted NFS shares on windows 2008 server. Situation is like this: as user A I have mounted NFS share (from linux server) as User A I'm executing ...
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1answer
43 views

Improve NFS performance for Windows NFS client to Linux NFS Server

I have a CentOS 6.7 server as an NFS Server, and I have a 3-4 Windows 7 (Enterprise) PC's using Windows NFS client to mount the NFS exports. The problem I'm having is this: The Windows clients can ...
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1answer
224 views

NFS: client does not see new files created on server (caching?)

The NFS server is a SLES11SP3, here is the exports statement: /media/data *domain.com(rw,sync,no_root_squash,fsid=1) I suspect this is a caching issue on the client (RHEL6), however I believe I ...
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0answers
15 views

NFS client latency spikes on KVM host machine

We run a small OpenStack environment with KVM hypervisors and shared NFS storage. The problem is: guest KVM machines' CPU usage spikes make NFS client latency grow. For example: same NFS volume ...
2
votes
1answer
3k views

GETATTR issues with linux and netapp

We're having an issue with our linux systems connecting to our netapp via NFS. The read/write IOPS are only around 1000/s but the GETATTR calls are almost 10,000! I found this bug but it says, it was ...
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1answer
26 views

NFS4 ID Mapping

Currently using NFS4 idmapping. If i manually update the file "/sys/module/nfsd/parameters/nfs4_disable_idmapping" on the NFS Server to "N" and flush the cache the UID and GID show up correctly on ...
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2answers
16 views

Open the folder as another user in Debian

I have logged to my debian as root using ssh. Than I have mounted some foler from my NAS using mount -t nfs 192.168.1.222:/nfs /media/nfs. Now I can access all subfolders. Exept /media/nfs/somefolder, ...
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3answers
11k views

How can I prevent vanishing error when using rsync with an nfs mount?

I'm in the process of moving files from an Ubuntu server to a Snow Leopard server. The Ubuntu server has an NFS share of around 6TB which I'd like to clone to the Snow Leopard server. I mounted the ...
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3answers
40 views

File permissions are being changed after gunzip of .gz file; how do I prevent that?

I have an NFS4 filesystem that has AD based authentication setup and ACLS to match. I am controlling access to the machines that mount the filesystem so the ACLs are very basic. One prevents users ...
6
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1answer
430 views

Unable to launch MSI installers off NFS share

I have a Linux server where I've configured a read only NFS share. The client I'm currently working on is a Windows Server 2008 R2 machine that has the NFS features installed. I'm able to open and ...
2
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3answers
54 views

NFS mounts depending on other NFS mount fail to mount at boot

I have setup 5 NFS mounts in /etc/fstab. The first one "parent" mounts on local mount point /foo and the other 4 "child" in mounts points on the first one: So let's say the second is /foo/test1. The ...
2
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1answer
6k views

RHEL - NFS4: Mounted/Exported as rw, user write permission denied

I have nfs4 configured between a RHEL 5.3 server (charlie) and a RHEL 5.4 client (simcom1). The machines are configured to authenticate users via kerberos by a Windows Server 2008 active directory ...
10
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1answer
21k views

unable to write to mount point (nfs-server), getting “Permission denied”

I'm trying to configure NFS between two RHEL7 nodes: first node: [root@ip-10-164-175-246 ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo) [root@ip-10-164-175-246 ~]# ...
13
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3answers
26k views

.nfsXXXX files appearing, what are those?

We have an application running (on RHEL5), streaming data onto an NFS share. Recently we saw a lot of .nfsXXXX... (xxx being a hexadecimal number) appearing in its working directory, where the ...
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22 views

Does an NFS client incur read/write page faults proportional to bytes read to/written from server?

Perhaps my knowledge of virtual memory has been supplanted by too much other junk. Recently I ran some database benchmark tests where all data was to be stored on an NFS server and accessed via NFSv3 ...