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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Can't connect to ssh after nfs problem

I had a problem yesterday with a server that lost connection (S1). From that server, there was a dir shared with NFS to another one (S2), no homedir and not in $PATH, but a dir to store old files for ...
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4answers
1k views

How to remove directory on NFS fileystem with an enormous number of files

A poorly tested program created a directory on an NFS share with an enormous number of files, which I need to remove. ls -ald /home/foo drwxrwxr-x 2 503 503 317582336 Jul 29 11:38 /home/foo The ...
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1answer
1k views

How to ensure nfs home directory is mounted before login

I have a machine (with mythtv installed) which automatically login a user, whose home directory is located on a server accessed by NFS4. In about 6 of 10 times it works like a charm, but sometimes the ...
2
votes
1answer
7k views

NFS exporting a directory that's already NFS mounted (on the server)

I have a NFS server, A, that's sharing out a folder. B is mounting the the folder. B is also sharing that folder out. However C is unable to mounted it. The error on C is: mount.nfs: ...
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1answer
49 views

build user chroot on first login

I'm using ldap for remote user authentication and I basically need to either figure out how to: a. chroot a user on machine b from machine a via nfs,(which doesn't seem possible without mounting ...
2
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1answer
42 views

Will Windows use NFS to write to a self mapped share?

If a Windows server has a drive mapped to a share on the same server, will it still use NFS to read/write or does it know that the drive is actually local? Would I/O performance be improved by using a ...
2
votes
1answer
230 views

Mount export of an nfs share

I have two machines A and B that are not on the same network, and I'd like to export an nfs share from one machine to the other. In the middle, I have a machine M that is on both network. I ...
2
votes
1answer
124 views

ZFS, NFS and user based quotas

I am using a ZFS storage (FreeNAS 9.1) with NFSv3. The NFS is mounted on Debian machine, where the linux users are created (they don`t exists on FreeNAS). How do I enable standard linux user based ...
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1answer
244 views

run nfs server version 3 only

I'm a RHEL guy, and new to debian/ubuntu, I have just setup an nfs server, and when I mount a share on a client, it uses version 4, how can I get the server to run with nfs version 3 only? PS: our ...
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votes
4answers
2k views

Flush-0:n processes causing massive bottleneck

I have a LAMP cluster that shares files via NFS and occasionally one of them will be stricken for a while when mysterious flush processes start appearing. Can anyone help me? The only way to resolve ...
2
votes
1answer
317 views

'No space left on device' on mounted NFS device

On NFS Server: Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvdf2 103212320 85090308 12879132 87% /export18 On Client Server: ...
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votes
1answer
1k views

Shared folder mounted on OSX: NFS, WebDAV or AFP?

We are trying to figure out how to best mount a network share on OSX machines (only). We went with WebDAV initially which does what expected but it's extremely sluggish. Also the Finder seesm to have ...
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3answers
2k 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 ...
2
votes
1answer
2k views

Getting at fsid under Linux? Or an alternate way of identifying filesystems?

In an environment with automounted home directories, such that the same filesystem exported by a fileserver may be mounted multiple times on the client, I would like to authoritatively be able to ...
2
votes
1answer
115 views

Does NFS cache reads by block or by file?

I have a large image stored on NFS. I want to read only the first portion of the image to get the header. Does the NFS client stop reading after it gets the blocks it needs or will it receive the ...
2
votes
1answer
297 views

How to change NFS export allowed IP addresses on Mac OS X Server (Tiger)?

I am running NFS on a Mac OS X Server 10.4. I had originally set up the NFS exports in the GUI, and restricted the IP addresses in the GUI to which it can export. Right now, I only have command-line ...
2
votes
1answer
184 views

Who sets NFS modification time - client or server?

I was curious about what exactly time is going to NFS file metadata when client writes a file. My assumption is that client time is recorded and not NFS server's time. But I wasn't able to find out ...
2
votes
1answer
414 views

What NFS hosting services exist?

My situation: I manage a small business, and would like to migrate the files on our local file server to a 'cloud' service. There are a large number of 'file storage' and 'file hosting' services (S3, ...
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votes
2answers
2k views

NFS I/O monitoring

I have a NFS mounted directory, and I'd like to monitor the I/O usage on it (MB/s reads and writes). What's the recommended way to do that ? This is the NFS client, I don't have access to the NFS ...
2
votes
1answer
373 views

Portmap and NFS4

Is the portmap service required on a ubuntu machine - when i'm using NFS4 mount only - when i'm exporting files using NFS4?
2
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2answers
950 views

Performance stats for ESXi VMs on Openfiler NFS

AFAIK VMWare utilise it's own filesystem vmfs for performance and efficiency reasons. What will that be if I host my VMs on an Openfiler server which setup as NAS using ext3 filesystem? Thanks
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3answers
2k views

Ubuntu hangs on boot when NFS-mounting entries in /etc/fstab, but they mount cleanly otherwise

I'm managing several Ubuntu 9.10 servers that NFS mount several folders (including /home). I'd like these folders to be mounted at boot time. I would like to have several entries in my /etc/fstab to ...
2
votes
3answers
645 views

Enterprise Tape Backup solutions

I'm currently attempting to re-architect a backup solution where I'm working. We've got 2 NAS devices, one in the office, one in the datacentre. The servers in the DC back up to the DC NAS, which ...
2
votes
1answer
2k views

iSCSI or NFS for Oracle VM shared storage?

I'm configuring a 4 node Oracle VM environment. One management server, two vm servers and a storage server with direct attached storage. The storage server is running Linux and I thus have the ...
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4answers
403 views

Best system to serve sqlite databases to webservers over a network?

I am helping in setting up a web service in which user data will be stored in sqlite databases on a server running perhaps Samba, and one or more web servers will read and write to those databases on ...
2
votes
1answer
140 views

How to PXE boot multiple servers from a single NFS image?

I need to boot multiple servers via PXE boot. They are all going to run the same ramdisk (i.e. "default" in the pxelinux.cfg directory), and then they all mount a root filesystem over NFS. Then they ...
2
votes
2answers
2k 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 ...
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)"; ...
2
votes
1answer
1k views

NFS server is exporting the wrong directories

It is a bit embarrassing to admit, but I have problems getting my NFS server exporting the right directories. I am using an up-to-date CentOS 6.2 on both the client and the server. The server is up ...
2
votes
3answers
365 views

Recommended networked file system for web servers?

If I have two web servers, what would the best way to keep their files in sync? Unfortunately the sites themselves cannot be altered significantly. Most of them are Wordpress based, but there are ...
2
votes
3answers
1k views

NFS4 client within OpenVZ container running Ubuntu 11.10?

I have an Ubuntu 11.10 VPS running inside OPenVZ with a hosting company. I'm trying to get it to mount a remote NFS server using NFS4, but can only get it working using version 3. I've been Googling ...
2
votes
1answer
401 views

Why is Apache serving stale files from NFS despite a seemingly correct configuration?

I have two CentOS machines (virtualized) with a mounted NFS share with the following in /etc/fstab: <ipaddr>:/mnt/nfsshare /mnt/nfsshare nfs ...
2
votes
1answer
323 views

Mount NFS on Windows XP

I want to know if anybody have done any hands on test mounting NFS on windows xp using "Windows services for unix" http://www.microsoft.com/download/en/details.aspx?id=274 I know that it should work ...
2
votes
2answers
612 views

Ubuntu mount of NFS home directories with AutoFS results in /etc/skel not being used

I am wanting a custom look for my Ubuntu 10.04 users, so things like the shutdown menu are not displayed and just having one panel at the bottom of the screen. Also removing some of the default ...
2
votes
3answers
3k views

NFS / DRBD / XFS Performance issues

we have a NFS sitting on top of XFS and drbd which delivers us a horrible performance (about 1MB/s read / write as shown in iostat/iotop) the xfs volume properties are: meta-data=/dev/drbd0 ...
2
votes
1answer
415 views

NFS share: no space left on device

My setup consists of a server, running Ubuntu 10.10, and a device, running a customized Linux. The device gets its kernel and mounts its root filesystem from the server using TFTP and NFS, ...
2
votes
2answers
303 views

nfs file access statistics

For a Linux NFSv3 server, is there any way to see statistics on actual file access? In other words, I would like to see a timestamped log of every file read or written. Motivation: I have several ...
2
votes
3answers
145 views

F_WRLCK calls take long time on NFS

I have NFS shared among 30 cluster nodes. The nodes are Debian 5 and 6. The NFS server is OpenSolaris 2009. We have good hardware and a 20Gbit Infiniband network. On the cluster nodes, fs operations ...
2
votes
1answer
1k views

Reasons for an upgrade to NFS 4

I am trying to convince our sysadmins to upgrade from NFS 3 or NFS 4 because I think that this will result in a dramatically performance improvement, especially when dealing with many small files. ...
2
votes
4answers
7k views

getting input/output error from NFS client on RHEL5

I have two RHEL5 boxes on a private network together (192.168.2.0/24) and I am trying to export a file system from one to the other but I keep getting the following error: mount.nfs: Input/output ...
2
votes
2answers
1k views

Can't write to Linux NFS share from OSX client

I'm trying to connect to an NFS drive shared from my Debian Squeeze box from my OSX 10.6 laptop, and try as I might I can't get it to let me write to the disk from the mac. I have the following in ...
2
votes
1answer
1k views

autofs fails to mount nfs mounts on Ubuntu Lucid Lynx (10.04)

When booting, the system fails to mount nfs mounts due to statd not being started. After manually starting statd, nfs mounts are automatically mounted by autofs. Even though /etc/init/statd.conf ...
2
votes
2answers
836 views

Does a read on a NFS file system slow performance?

If a NFS client reads a file, does any network traffic happen? or is it just writes (by any node) that result in network traffic? In particular, I'm interested in whether doing a file_exists() call ...
2
votes
3answers
726 views

Multiple web servers serving same static content

I created a sub-domain for static content to be able to serve it more efficiently by several load-balanced web servers. This static content is updated automatically, at a rate of ~1k files/day. Right ...
2
votes
2answers
122 views

SELinux contexts with NFS shares

I'm trying to set up an NFS share between 2 CentOS servers (filesrv & websrv) for a folder that needs to be readable & writeable by the Apache process. I'm having trouble with the writeable ...
2
votes
1answer
79 views

Restart an in-use NFS server without interruption (within timeout)

I have a bunch of compute clients working on jobs, saving output data to a NAS machine. All machines are centos 6.2. They mount it via automount NFS, with a timeout of 1200 (default config). The ...
2
votes
2answers
1k views

Issue with VMWare vSphere and NFS: re occurring apd state

I am experiencing issues with VMWare vSphere 5.1 and NFS storage on 2 different setups, which result in an "All Path Down" state for the NFS shares. This first happened once or twice a day, but lately ...
2
votes
1answer
429 views

NFS mount has stopped working on ESXi

We have had around 20 hosts connected to an NFS share running from an Ubuntu server. The other day they all lost connection. We have rebooted the NFS server to rule out any services going funny. When ...
2
votes
1answer
100 views

Does Practical NFS Authentication for RPCSEC_GSS Exist Other Than Kerberos?

Most of the reading I have done suggests that RPCSEC_GSS can be set up using Kerberos, but we don't already have a Kerberos server set up. I had read there were other auth methods like LIPKEY that ...
2
votes
2answers
1k views

How to change 'Advertised pause frame use' and autonegotiation setting on gigabit NIC

I'm investigating some poor nfs performance on a new server, as compared to an old server. Both the old and the new server are nfs clients, and they connect to the same exact NetApp nfs server. My ...