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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2answers
2k views

Debian Squeeze stable: ifstate file does not contain the network interface (related to failing NFS mount at boot)

The automatic NFS mount at boot doesn't work. This is my fstab row: nas:/backups /mnt/nas_backups nfs rw,_netdev,auto 0 0 Using mount -a it works, but at boot it doesn't work. ...
8
votes
1answer
1k views

high load average, high wait, dmesg raid error messages (debian nfs server)

Debian 6 on HP proliant (2 CPU) with raid (2*1.5T RAID1 + 2*2T RAID1 joined RAID0 to make 3.5T) running mainly nfs & imapd (plus samba for windows share & local www for previewing web pages); ...
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votes
1answer
2k views

how to mount a directory from another server? [closed]

I have two Ubuntu servers. One of them has a directory with data. I want this directory to be visible (and writable) by the second server. How can I do this? What tool to use?
7
votes
1answer
1k views

NFS performance woes on Debian

I am having very inconsistent performance with NFS between two wheezy machines, and I can't seem to nail it down. Setup: Machine 1 'video1': Dual 5506 w/12GB ram, XFS on 8x3TB RAID6 exported as ...
0
votes
1answer
71 views

What are the pre-requisites to NFS Mount in between two servers?

I understand port 111 and port 2049 needs to be accessible; but what are the other pre-requisite that's needed to be present before being able to NFS Mount? We have tried NFS Mount using "mount -v -t ...
0
votes
2answers
1k views

How to monitor which files are accessed through NFS?

I have a linux file server running CentOS 6. Files are accessed via NFS4. Sometimes I have problems with disk io load. I want to find out what is causing them. I can find out which client is causing ...
1
vote
1answer
764 views

Passwordless ssh with NFS+NIS

I'm playing around with a cluster (with torque+open-mpi). I have a master node and compute nodes. Master submit jobs to computes nodes. To do it I use NIS+NFS in order to unify UID's and home ...
10
votes
3answers
3k views

NFS with encrypted ubuntu home directory

I am having trouble getting NFS setup on with vagrant: On my local machine I have installed NFS: apt-get install nfs-common nfs-kernel-server And in my Vagrantfile set it to be used: ...
0
votes
1answer
448 views

NFS exports priority on server

I've got a server with several directories shared in exports. One of these exported directories holds home directories, others hold some random data. Is it possible somehow to prioritize i/o coming ...
1
vote
1answer
506 views

NFS exportfs spamming logs. Is this a broken setup?

I have a NFS server running Ubuntu 10.04, serving an OCFS2 filesystem. The setup is somehow complicated because the server has Heartbeat and Pacemaker installed to make a cluster with another server. ...
1
vote
0answers
200 views

Problems mounting kerberos protected NFS share from a client machine

I have a client Linux (Fedora 16) PC that I want to use to access a NFS share. Running the command mount -v -t nfs4 -o sec=krb5 server.company.com:/home/share/username /media/nfs results in ...
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1answer
62 views

How To Verify Disk Integrity of an NFS Share? [closed]

How can I verify disk integrity of an NFS Share?
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 ...
1
vote
0answers
255 views

nfs export external harddrive

I am trying to export my external harddrive using nfs. The external harddrive has the filesystem of type fuseblk. Does nfs export support fuseblk type? if not is there any other way that I can mount ...
1
vote
2answers
147 views

Best practice for scaling a single application source to multiple nodes

I have an application which needs to scale horizontally to cover web and service nodes (at the moment they're all on one) but interact with the same set of databases and source files (both application ...
2
votes
1answer
278 views

What makes Lustre faster and more scalable than NFS?

I have read in various places (e.g. here and here) that NFS' I/O performance does not scale, while Lustre's does, and that Lustre can deliver better I/O rates in general. There seem to be various ...
1
vote
1answer
519 views

NFS failover WITHOUT DRBD?

So I am trying to set up a redundant NFS share in a cloud environment(all links internal, half gig links), and I am looking into using heartbeat for failover, but all the guides seem to be about ...
1
vote
1answer
478 views

AutoFS with NIS and cannot mount share owned by root

I am using Ubuntu 12.04, and am trying to use NIS with AutoFS to mount the NFS shares I have access to for projects. I can mount my networked home directory, which is used for the remote terminals, ...
0
votes
1answer
231 views

Mounting share over VPN

I have a CentOS 5 web server which currently mounts a NFS export on my Mac OS X 10.7 laptop. It works great, except over VPN I can't get it to mount at all. I tried SMBUp but haven't been able to get ...
1
vote
3answers
108 views

Is it necessary to have firewalls rules between trusted nodes communicating on their backend interfaces?

I have 6 nodes that have internet access on eth1 and private access to one another on eth0. Currently I have firewall rules for eth0, for things like memcached and NFS. Is this necessary? It's a real ...
2
votes
1answer
829 views

NFS and KVM. Slow Speed

I have a KVM virtualization in Debian with 2 guests (Debian and Windows 2008). I want to have a 'mount point' shared that can be accessed by the 3 system (host and 2 guests) at the same time. So the ...
2
votes
1answer
832 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 ...
1
vote
1answer
325 views

Nexenta, NFS and LOCK_EX

I'm currently using an LAMP architecture and I expect a big problem :( I have several http web server using PHP5. All are mounting via NFS (v3) the directory for all the hosted websites. The file ...
5
votes
2answers
3k views

How to kill ostensibly immortal process?

I had some huge file transfers operating on an NFS mount. The server on which the mount point resided was carelessly rebooted, and now the server from which these large transfers were initiated seems ...
0
votes
1answer
2k views

How to create an NFS proxy by using kernel server & client?

I have a file server that exports as NFS. On an Ubuntu machine I mount that, then try to export it as an NFS volume. When I go to export it, I get the message: exportfs: /test/nfs-mount-point does ...
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votes
1answer
662 views

I try to access a NFS mount via FTP. It works but the FTP Dir listing is very slow

I mount an NFS using this command: mount -o rsize=8192,wsize=8192,timeo=14,intr serverip:/directory /mnt/directory However the mount appears on the client as expected a command like ls -a work ...
0
votes
3answers
11k views

NFS client shows everything as nobody:nogroup

I am on Ubuntu Server, one server running nfs-kernel-server, and the other mounting the NFS export. On the client, when I use ls -l or stat, everything shows as nobody:nogroup, but the actual ...
2
votes
1answer
964 views

What does a connection timeout indicate when performing an NFS mount on a QNAP NAS?

We have a shiny new QNAP NAS (TS-879U-RP), and I'm trying to mount it to our big ol' RHEL server in the same manner as our other two QNAP NAS devices. The IT department won't give me the root ...
1
vote
2answers
539 views

Maximum swap file size

I'm doing some file processing that seems to require an enormous swap file: even 20Gb isn't enough. What's the theoretical maximum? Running swapon on a 1Tb file resulted in: swapon: ...
2
votes
1answer
835 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 ...
5
votes
2answers
8k views

How to allow writing to a mounted NFS partition

How do you allow a specific user permission to write to an NFS partition? I've mounted an NFS share on my localhost (a Fedora install), and I can read and write as root, but I'm unable to write as ...
0
votes
1answer
620 views

Executed PHP files are stale unitl “touched” (Symlinked NFS mount as web root)

We have a PHP application that has 3 web servers (running Nginx and Apache). The web server's directory root are symlinked directories that point to an NFS mount. For example: web01 has an NFS mount ...
4
votes
3answers
5k views

umount bind of stale NFS

i've got a problem removing mounts created with mount -o bind from a locally mounted NFS folder. Assume the following mount structure: NFS mounted directory: $ mount -o ...
2
votes
2answers
57 views

Fastest security check of file tree on NFS

I am currently experiencing very bad performance using the following on an NFS network folder: time find . | while read f; do test -L "$f" && f=$(readlink -m $f); grp="$(stat -c %G $f)"; ...
0
votes
1answer
245 views

NAS server freezes in cluster environment using NFS

In our department we have an Iomega NAS (px4-300d) connected to a Supermicro cluster with 5 nodes (12 cores per node). Each node mounts a share on that NAS by using NFS. Unfortunately after some time ...
4
votes
1answer
353 views

How do remote filesystems (nfs ssfhs) handle remote-to-remote copies?

After working with a few large files over sshfs, one question started dwelling in my mind. Suppose I have a sshfs (or NFS for that matter) mount on ~/remodetir and I want to do something like cp ...
0
votes
1answer
2k views

NFS Mounts Issues

Having some issue with a NFS Setup on the clients it just times out refuses to connect [root@host9 ~]# mount 192.168.0.17:/home/export /mnt/export mount: mount to NFS server '192.168.0.17' failed: ...
1
vote
1answer
104 views

Feisty network mount refuses to umount

I have a particular network share that's giving me grief. Basically, we had two NAS devices which had to be moved to another building. I updated /etc/fstab to the new IP addresses and tried to remount ...
3
votes
1answer
431 views

Making NFS behave like a block device

We're currently working on a virtualization setup, and because of features like being able to grow volumes on our filers rather than having to go through the process resizing block devices etc. we'd ...
5
votes
1answer
419 views

What's the best way to share source code between EC2 instances?

Currently I have 4 EC2 instances in amazon cloud behind a load balancer and this number will grow up to 20-30. I am looking for the best way to manage source code on all of these instances. There is a ...
3
votes
1answer
1k views

How do I rearange a file tree and then export it over NFS?

I've got a backup server that stores incremental backups in a tree like this: /backups hourly.0 server 1 server 2 hourly.1 server 1 server 2 hourly.2 ...
2
votes
0answers
436 views

NFS inherit permissions from shared directory - Mac OS client

Short question: Is there a way to have files on a NFS share on a Mac OS client inherit the permissions of the shared directory? Scenario: Ubuntu 12.04 server Mac 10.7.4 client shared directory has ...
2
votes
3answers
3k views

NFS maximum number of simultaneous operations per connection?

I heard from Tier 3 vendor support that NFS has some sort of limit (I was told 16) as to the number of concurrent operations that can be executing at the same time. I apologize that I don't have any ...
4
votes
1answer
806 views

Does an NFS export with sec=krb5 *require* that the parent directory also be exported with sec=krb5?

I copied somebody's NFS server/client setup verbatim and am having trouble making sense of what's going on with it. This is the /etc/exports: /export ...
3
votes
1answer
671 views

Weird permission issue with POSIX ACLs, NFS v3 on Linux

I have two Linux systems, both running Debian Squeeze. Versions of (I think) the stuff involved are: kernel: 2.6.32-5-xen-amd64 ii nfs-kernel-server 1:1.2.2-4squeeze2 ...
4
votes
1answer
2k views

Mount Mac OS X 10.7 share on CentOS?

I need to create a mount point/share on a Mac OS X 10.7.4 (non-server) machine that a CentOS 5.2 box can mount. I've searched a ton but most instances are for using a linux server and Mac client... ...
21
votes
1answer
4k views

Understanding NFS4 (Linux server)

I've been a bit bothered by NFS4 on Linux. Some information 'out there' seems to conflict with other information, and other information appears hard to find. So here are a couple of things that caught ...
6
votes
3answers
756 views

Timing issues with OpenVPN and NFS mounts (Debian Squeeze)

I'm trying to mount NFS filesystems over an OpenVPN link on Debian Squeeze. The problem is that the default layout of init scripts and such tries to mount the NFS filesystems before bringing up the ...
2
votes
2answers
704 views

NFS4 Username Mapping Between OpenIndiana and Linux

I have an NFS4 share on an OpenIndiana server that I'm trying to properly access with an Ubuntu Linux machine. The username that owns the files in the share on the server is "nick" its UID is 104 on ...
0
votes
1answer
1k views

Symantec Backup Exec can't see network shares

I have a CentOS 6 host with a NFS export where I have stored some virtual machine backups. Now I want those backups to tape for archival. I have mounted the share to a drive letter under Windows 2003 ...