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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Restrict access to .ssh folder over network shares

I run a small server running Ubuntu Server 14.04 and have just noticed that the .ssh folder in the users home directory is accessible via SMB and NFS. The SMB and NFS are both secured, however I ...
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1answer
1k views

Static NFS mounts vs autofs direct map mounts

We are in the process of re-designing our NFS service and are at a point where we can choose either to mount our NFS shares statically from /etc/fstab at boot or as autofs direct maps. In our new ...
4
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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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0answers
12 views

NFSv3 client differences in read/write performance

I'm taking care of a few servers that make relatively heavy use of a NFS filer. At crunch time a single server sends about 2k reads + 2k writes per sec to the filer. According to nfsiostat at these ...
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1answer
1k views

Ubuntu client can't mount Nexenta NFS

I have a Nexenta storage box (Solaris), which exports an NFS share. Mac OS X and older Ubuntu clients can mount the NFS share just fine without any special options. Later version of Ubuntu simply ...
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0answers
21 views

Windows NFS Share: Allow Linux uids

I have a couple of NFS shares set up on my Windows Server 2012 box, but they only allow Linux users with uid 0 to access them (aka the root user). How and where do I specify that I, for example, want ...
1
vote
1answer
16 views

Unable to mount NFS share

I have 3 servers : Server1 : Stores my data. Had a exported folder. Debian 7 - Linux 3.2.0-4-amd64 on x86_64 Server2 : "Client" where is the Server1 exported folder is mounted. Debian 7 - Linux ...
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vote
1answer
994 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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3answers
59 views

Finding users responsible for thrashing an NFS mount

I have a large multi user system, NFS mounting a large piece of shared storage. I can identify the source of all my network traffic - narrowing it down to a particular host - thanks to nfsstat. ...
0
votes
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 ...
2
votes
1answer
1k 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 ...
0
votes
1answer
1k views

NFS Share with root for anonuid / anongid

I've exported a share from my server and set anonuid and anongid to be 0 (root). However, when I mount the share on the client, it doesn't appear my settings are working as I'm getting permission ...
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0answers
21 views

Why is nfs server not seeing resized filesystem size?

On the NFS server, when I extend the the logical volume (using lvm2) and subsequently the ext4 fs on top of it (using resize2fs), I'm able to see the new size locally with df. But the NFS clients ...
2
votes
1answer
2k views

Reconnect Attempts for CIFS share

I have a CIFS share mounted in the FSTAB on Ubuntu server, which connects to our NAS and works without issue. Last night we had an issue with the SAN for about 12 hours. We corrected the problem and ...
0
votes
1answer
34 views

Mount NFS Share Windows Server 2012

I'm trying to mount an NFS share setup on my Synology Server to my Windows Server 2012 server. Here's what I've tried: net use Z: \[ip address][share folder] /user:xxxxx [password]' mount ...
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0answers
24 views

Unable to Mount a directory on linux server :- Error ICMP host unreachable - admin prohibited, length 68

Folks , I have two linux server. I want to mount one directory /symantic of one file system to another. I am able to ping , i am able to do telnet from each other. I have checked port 2049 which is ...
0
votes
2answers
993 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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3answers
2k views

NFS Over OpenVPN: Top Performance Boosters

I have two VPS's - One is running 2008 Server R2 and the other is a Ubuntu 12.04 installation. I am using the Windows VPS for RD sessions for Quickbooks and a couple other apps and using the Ubuntu ...
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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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vote
1answer
18 views

Can I prevent exportfs from from breaking ZFS sharenfs exports?

I'm using ZFS on Linux as a fileserver running Ubuntu Server 14.04 LTS. The ZFS pool shares a number of datasets using it's sharenfs property. Outside of ZFS there are a few additional NFS shares ...
1
vote
1answer
65 views

CentOS 7 NFS partition doesn't mount on boot

I have a CentOS 7 x64 server which doesn't mount NFS entries in /etc/fstab on boot. The configuration is correct, because if I run mount -a, everything works like a charm. The fstab entries are as ...
1
vote
1answer
258 views

NFS on Godaddy VPS

I'm having big trouble trying to setup nfs sharing folder between 2 VPS I have on GoDaddy, Tried to follow lots of step-by-step guides to do this, but I can't start NFS service, I get this error when ...
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1answer
1k 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 ...
2
votes
1answer
4k views

Since Upgrading NFS and Ubuntu to 14.04, All NFS Mounts Are Failing

Since upgrading my Ubuntu Machine, all my NFS mounts are hanging. I checked the syslog, and I'm seeing this now: Sep 29 04:29:10 ip-10-10-10-10 kernel: [ 9589.594814] RPC: AUTH_GSS upcall failed. ...
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votes
2answers
70 views

NFS stop working when on a lvm

I have a nfs server that was working correctly with a share on /exports/something. However, when I mount /exports/something on /dev/mapper/something (a lvm with more space) the nfs does not work. The ...
2
votes
1answer
931 views

How to force use of tcp instead of udp for rpcbind?

I'm trying to use tcp/111 for rpcbind under Debian Wheezy instead of udp/111. The portmap in Squeeze uses tcp/111 without any special configuration, but Wheezy fails. Even numerous sites (as well as ...
0
votes
1answer
2k 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 ...
3
votes
2answers
1k views

Poor OpenVPN NFS performance

I have EC2 application servers behind an elastic load balancer. All of the application servers have access to a shared storage server, notably for centralized cache files, logging, etc. The shared ...
0
votes
1answer
1k 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 ...
1
vote
2answers
2k views

How to mount an NFS share in a VM guest?

We have a machine with Win7-x64 installed. On this machine, with VirtualBox, we're running a guest Fedora-x64. We've defined an NFS share on this Fedora instance. Here is the entry in /etc/exports: ...
3
votes
1answer
1k 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 ...
1
vote
1answer
838 views

Autoscaling EC2 with NFS mounts

I'm trying to set up a shared filesystem on EC2 and I've read tutorials such as this: http://blog.ronaldmccollam.com/2012/07/configuring-nfs-on-ubuntu-in-amazon-ec2.html In step 2 it talks about ...
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0answers
14 views

Some users cannot write via NFS, but others can

I have an NFS4-mounted /home drive, with several different users' home folders in it. I am using inetd's ID-mapping feature (i.e. NEED_IDMAPD=YES in /etc/default/nfs-common). The NFS mount and ...
0
votes
0answers
24 views

Opennebula is very slow copying disk image

I have a CentOS virtual machine with OpenNebula's sandbox installed, connected to a host via NFS. I added a disk image of 2.5 GB that contains ubuntu server 12.04. Then I created a VM from this disk ...
1
vote
0answers
34 views

Optimum LUN size for LVM created NFS share

I have access to roughly 80 TB of capacity via a SAN, which I want to set up as as 2 NFS shares: 1 share of 70 TB and 1 share of 10 TB. The 10 TB share will have full backup to tape, whereas the 70 TB ...
3
votes
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 ...
0
votes
2answers
61 views

MySQL, NFS and symbolic links

I have been migrating an older server running apache2 + mysql under ubuntu to a new server running debian (wheezy). The migration works fine while the databases are storted localy (in our case ...
1
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0answers
72 views

Circular directory structure

I'm having an issue with a circular directory structure warning produced by du and find on my CentOS servers. I have two FreeNAS servers exporting several datasets via NFS which are mounted on the ...
4
votes
2answers
3k views

How to get decent NFS performance for workloads like git?

I manage a vagrant setup for our developers running OSX to manage VirtualBox systems for development. In order to support inotify inside the linux machine, we eschew the usual method of sharing ...
0
votes
0answers
54 views

OpenNebula glusterfs cannot create on volume

I try to create a VM on my gluster volume, it fails with the following message: Wed May 20 20:37:30 2015 [Z0][DiM][I]: New VM state is ACTIVE. Wed May 20 20:37:30 2015 [Z0][LCM][I]: New VM state is ...
1
vote
2answers
28 views

awstats server in dynamic infrastructure

I have a linux server dedicated to awstats. This server hosts awstats application and generate/publish statistics for several websites hosted by several webservers deployed in my infrastructure. In ...
0
votes
1answer
38 views

NFS client, ZFS Server ZoL: cat to changed file ends with not found

We get in trouble since an update from our clients from Ubuntu 12.04 to Ubuntu 14.04. The behavior: On client A I change an existing file foo on a nfs share. On client B I do a cat foo. 1st time ...
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0answers
25 views

Enable chown for a single host on an NFS export

Current NAS export I have a ReadNAS 4200, which I have root access to, which has the following /etc/exports file: "/Data" *(insecure,insecure_locks,rw,async) What my configuration doesn't allow ...
2
votes
4answers
593 views

How can I build a file server that we can incrementally grow, in Linux?

I work in an scientific lab with a limited budget and ever-growing need for storage. A year ago we needed ~2-3 TB storage, today we need 13+ TB which fills our current server (linux, raid 6 with 9 ...
2
votes
1answer
125 views

Using a JBOD for redundant NFS

I have a Xyratex sp-2224 JBOD enclosure (dual controller) and a pair of Dell servers with SAS HBAs installed that I'm looking to utilize in a redundant NFS cluster. The hardware isn't what I'm ...
2
votes
3answers
877 views

Nexenta/OpenSolaris filer kernel panic/crash

I've an x4540 Sun storage server running NexentaStor Enterprise. It's serving NFS over 10GbE CX4 for several VMWare vSphere hosts. There are 30 virtual machines running. For the past few weeks, I've ...
5
votes
4answers
13k views

File locks on an NFS?

My server uses NFS (Network File System), and I'm unable to use PHP's flock() -function. Is there a way to lock files on an NFS or is there a need to do so?
2
votes
1answer
69 views

Testing failover scenarios on nfs

I'd like to know what happens to connections when nfs is failed over to another server (drbd). If I have a file open in vim, it will lock up I think only sometimes come back.. after a long while? ...
0
votes
2answers
1k views

nfs, execution denied

I have server (debian 6) machine (say, ip = 10.13.13.100) with nfs exports /etc/exports /path/to/my/shared/folder 10.13.13.0/24(rw,async,no_sub_tree_check,no_root_squash) There are two users on ...
1
vote
0answers
65 views

Is it possible to configure windows 7 x64 machine as a NFS server? [closed]

Aim: I want to mount a windows directory with read only permissions on linux machine without typing in windows credentials. I know it's risky but I am not concerned about the security here since both ...