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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6answers
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How should I copy my VM templates between vSphere datacenters?

Background/Environment Architecture: My current environment for $corp_overlords$ is set up in a hub-and-spoke model with a technologically well-endowed home office hub (SAN, bladecenter/bladesystem ...
2
votes
5answers
1k views

DRBD vs. GlusterFS for replication

I need to build a solution to host internal git repositories. It needs to supports hundreds of thousands (or more) repositories. I plan on using multiple "dumb" servers with a shared storage, so ...
0
votes
1answer
25 views

Files sometimes fail to be retrieved from apache server

So, I'm not sure what the problem here is but I suspect it might be the server. So here's some key details Amazon EC2 servers (All in the same region and zone) Ubuntu 12.04 server Apache2 with gzip ...
3
votes
5answers
3k views

vSphere ESX 5.5 hosts cannot connect to NFS Server

Summary: My problem is I cannot use the QNAP NFS Server as an NFS datastore from my ESX hosts despite the hosts being able to ping it. I'm utilising a vDS with LACP uplinks for all my network traffic ...
2
votes
1answer
79 views

nmon NFS Performance Counters/Metrics

I have recently used nmon to record NFS client performance data from a suse 10 SP4 host and now need help understanding what the captured read & write figures truly indicate. With other ...
0
votes
1answer
136 views

NFS, Quota and LDAP

I have the following scenario in two servers with Debian: Server #1 OpenLDAP, NFS exporting /home Server #2 PAM with pam_ldap configured to authenticate against Server #1, /home directory mounted ...
1
vote
2answers
322 views

Where is linux automount's config?

I have a centos box, it has some NFS mounts. I'm trying to figure out these NFS filesystems get mounted. And I figured out if I rename /usr/sbin/automount to some else name, after reboot the box, ...
1
vote
2answers
168 views

Why does dd show slow disk speed first time?

I'm checking the disk speed of a hdd on CentOS 6 using dd command. The setup is a DRBD setup - with this server being primary. To ensure that I get correct values, I execute the dd command 3 times ...
0
votes
1answer
52 views

ls -l shows constantly updating log files with few minutes old time stamps (modified time)

I gave the command ls -lt to see which log files are constantly being written into, since if they are being written into, the modified time will almost be very close to date command's output. But ...
0
votes
0answers
235 views

How do I trace and troubleshoot recvfrom resource temporarily unavailable errors on an NFS Fat Client?

I'm running a few dozen Debian Wheezy diskless fat clients and, while trying to diagnose a slow performance web browser issue, I noticed IceWeasel(version 24.0-1~bpo70+1) was getting a ton of recvfrom ...
0
votes
1answer
146 views

nfs autofs automount of exported filesystems is empty on nfs server

I am having issues with empty nfs automounts on the nfs server itself. I'm running RHEL5.7 64bit exporting 4 directories as follows: /export/site/server13 *(fsid=0,rw,sync,crossmnt) ...
2
votes
2answers
58 views

Will locally mounting root filesystems of all remote servers being managed eliminate need to share dotfiles?

I've got about 10 remote servers being managed, through SSH, and I typically just SSH into each of them for remote management tasks. This requires me to have duplicated many of my dotfiles (like ...
1
vote
0answers
51 views

PHP file load time, perhaps related to NFS?

The Problem I'm attempting to diagnose a performance issue on a Drupal website I'm developing. In the morning, when the site has seen no traffic (not even a cron run) for over 8 hours, the homepage ...
2
votes
0answers
155 views

NFS server export list empty

After upgrading my router, I am unable to mount NFS shares from a Debian server on an OS X client. I have updated /etc/exports according to the new IP address of the client (first line previously ...
1
vote
1answer
236 views

Automounting home directories using LDAP in ArchLinux

I have managed to set up an OpenLDAP server that runs ArchLinux. I can now log in from the client (also ArchLinux) using the LDAP users. Now i want to mount the home directories over the network... I ...
0
votes
1answer
67 views

Unable to mount the file system from server to client while booting through network

I want a client which loads kernel and file system from the server through network. Till now, On server side, i changed the settings in /etc/dhcp/dhcpd.conf to get an ip-address to the client. After ...
0
votes
0answers
299 views

VFS: Cannot open root device “nfs” or unknown-block(0,255)

I am trying to setup a diskless client which will mount over nfs to the server. When I try to boot the client I get the following error message: VFS: Cannot open root device "nfs" or ...
2
votes
1answer
47 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 ...
0
votes
1answer
458 views

* Starting NFS kernel daemon [fail]

Hi I follow the https://help.ubuntu.com/community/SettingUpNFSHowTo guid to install nfs server on ubuntu 12.04 64 bit server, but when I tried to start the server I get ubuntu# service ...
2
votes
0answers
118 views

mdadm raid10 or nfs performance issues?

I have a fresh mdadm RAID10 device which is healthy, built from 4 x 7200rpm SATA 3 drives: # cat /proc/mdstat Personalities : [raid10] [raid1] md2 : active raid10 sdc3[5] sda3[4] sdb3[1] sdd3[3] ...
0
votes
1answer
65 views

new centos os servers, nfs mounting is really slow

So i am setting up two new boxes (actually linodes) nfs.server - CentOS release 6.2 in my /etc/export i have /home/unit 192.168.131.103(sync,insecure,no_subtree_check,no_root_squash,rw) ...
0
votes
0answers
29 views

NFS-mounting utmp

I've got a Slackware Linux cluster I'm planning on using for general-purpose shell accounts. Accounts are managed such that there are no UID or username conflicts among nodes. Given this, would ...
0
votes
2answers
253 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 ...
-1
votes
1answer
35 views

Best choise for shared drive between webservers [closed]

I wonder what the best choise is/practices are for a shared drive between multiple webservers. The same application needs to be employed on multiple webservers servers for load balancing ...
6
votes
1answer
275 views

How to reference an NFS share by UUID in the client's /etc/fstab

I have the following NFS export on my server, with fsid set to a newly generated UUID. /etc/exports: /mnt/data client(ro,fsid=b07f5af6-6b10-11e3-b4c1-00248115724d) I would then run exportfs -rav ...
0
votes
0answers
177 views

NFS export all_squash and anonid

I have a server, S, and a set of clients, C, which I want to share files using NFS. In particular, some clients should have their user-ids remapped as they do not have a user that corresponds to the ...
3
votes
1answer
133 views

nfs problems: shares appear to be the wrong size. files created on share not visible on server

I have set up shares on an NFS server. I can mount the shares with no error. The share sizes reported by "df" are much smaller than the share size on the server eg. server reports 1 TB but the share ...
1
vote
0answers
311 views

Mounting NFS stopped working after server upgrade to newest Debian?

I have NFS server that is working as a general filer in a LAN. Recently due to disk malfunction, I lost everything there, so I got new disks, reinstalled newest Debian (jessie), copied back config ...
0
votes
3answers
2k views

mount.nfs: access denied by server while mounting in Ubuntu Machine?

I have three machines - machineA 10.108.24.132 machineB 10.108.24.133 machineC 10.108.24.134 and all those machines have Ubuntu 12.04 installed in it and I have root access to all those ...
2
votes
0answers
128 views

NFS server unresponsive to clients - with processes 'migration' and 'xfssyncd' consuming unusual cpu

I have a CentOS 6.4 fileserver running NFS 4, serving a couple of XFS filesystems. There are a few dozen clients connected to it. Today it slowed to a crawl for the clients - the clients would hang or ...
1
vote
1answer
94 views

NFS mount still connected even after box is disconnected from network

I have a mount between a RHEL 5.6 and a Solaris 6 box acting as the NFS server. My mount options are simply rw,intr. When I disconnect the RHEL linux box from the network I am still able to write ...
1
vote
1answer
66 views

Is there anything better than NFS for sharing directories between linux guests on VMWare? [closed]

We have an application that on physical machines distributes work to slaves via a NFS mounted directory shared on the master. This configuration is easy to replicate on VMWare. And seems to give ...
1
vote
1answer
349 views

Why Permission Denied with NFS after reboot?

I have Ubuntu and CentOS clients nfsv3 mounting to a FreeBSD box, which got rebooted while the nfs clients were connected. Now the clients get a permission denied when they try to access the mount ...
1
vote
0answers
47 views

NFS Performance Issue Using NAS

I am encountering some performances issue using NFS. Here my configuration: A physical NAS with some internal storage plus an external storage. A virtual linux machine called GhettoVCB where I have ...
1
vote
0answers
85 views

AutoFS wildcard subdirectory

I am trying to automount /home/users/<username>/secure for all users using AutoFS. Naturally I would put down this line as a direct map: /home/users/*/secure -fstype=nfs4,rw,sec=krb5p ...
1
vote
0answers
155 views

What would cause RMAN backups over NFS to kill SAN performance?

I've been trying to figure out this problem for several weeks now, we are using an Exadata that runs nightly RMAN jobs to backup the database to a NFS mount. When these jobs occur, the average latency ...
-1
votes
2answers
88 views

Is a bad NFS mount preventing a clean boot?

I'm on Ubuntu server (I think it's 12.04, but not positive) and I basically ran into this problem here Unmount a nfs mount where the nfs server has disappeared The umount command didn't work, so I ...
1
vote
1answer
91 views

Access xfs quota info from NFS client

I've got an xfs filesystem (on a Centos 6.4 server) mounted via NFS on a client server (Centos 6.3). I can't seem to access the quota info from the client. It simply returns nothing for xfs_quota -c ...
4
votes
1answer
195 views

Linux: echo 3 > /proc/sys/vm/drop_caches takes hours to complete

I have a Thecus N8900 NAS, which is a Linux based file server, providing files via NFS to six clients. For some reason that Thecus support has yet to explain, it runs a script that checks ...
2
votes
1answer
580 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 ...
0
votes
1answer
100 views

Using TCP protocol for NFS mount points on linux servers

I'm trying to use TCP protocol for better performance for NFS mounts but currently /proc/mounts says its using TCP protocol? does that mean NFS is already using TCP by default? nfs v3: ...
0
votes
1answer
360 views

Problems mounting Kerberos authenticated NFS share on CentOS 6.4

I'm trying to mount a Kerberos authenticated NFS share on a CentOS 6.4 machine. I have tried exporting the protected share from both another CentOS 6.4 machine and from our NetApp with the same ...
1
vote
2answers
91 views

File modifications lagging behind

We are having a weird issue where file creation/removal from a NFS client takes a very long time to propagate out to the other client(s). Mount options we have on the clients are: ...
3
votes
1answer
338 views

How to monitor NFS load from userland?

Apologies if I'm not using the proper jargon (although I'm a longtime linux user, I'm not an admin) or if this is a FAQ (though searching SE got lots of hits, I didn't see anything quite like this ...
0
votes
1answer
68 views

Why are nearly all my NFS calls for syscltid and syscltidconf?

I manage an installation with 1 server running Ubuntu 12.04 and 60 Raspberry Pi microcontrollers running raspbian. Each Pi mounts an NFS drive from the server to read new code and store logs. We ...
0
votes
1answer
87 views

Read only NFS mount with local writes allowed

I would want to share a directory via NFS only read-only (data should not be corrupted). However I would want the client to be able to use the mounted folder as if it was read write, as transparently ...
-1
votes
1answer
227 views

Benchmarking GlusterFS & NFS on AWS using iozone and dd gives different results

I have tried benchmarking GlusterFS vs NFS on Amazon Web Services (AWS) using a m1.medium sized EC2 instance. We use the AWS EBS as the block store, with a XFS file system. Running Ubuntu 12.04 ...
0
votes
1answer
366 views

Debian 7 NGINX OwnCloud - move data-folder to NFS-mount permission problems?

Case: Debian 7.1.0 server running nginx 1.2.1, hosting OwnCloud 5.0.13 OwnCloud default installed in /var/www/owncloud Files uploaded to owncloud reside in /var/www/owncloud/data However, diskspace is ...
0
votes
2answers
194 views

NFS server and client for web servers

I have this architecture on Amazon EC2, one NFS server and one NFS client, on the client I am serving PHP and Django websites (nginx, uwsgi, php-fpm) and they work perfectly. I am experiencing an ...
0
votes
0answers
50 views

I keep getting Stale NFS handle error after re-exporting folder on NFS share

I had a shared folder on server (ubuntu 12.04) that was exported via nfsv4. Then I had to switch to RAID0 and mount it to the same mount point that had previous shared folder. On server: service ...