nfs (Network File System) created by Sun Microsystems. NFS allows a client system to access network files as if local.

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File Server on High Availability (HA) Setup for LAMP?

I'm not sure what is the most proper way (industrial standard) to setup the High Availability servers (especially for LAMP Stack). Lets say i have: 2 Load-balanced Web Servers (Apaches) Question: ...
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26 views

Copying files between /shares?

I have this Seagate NAS with SSH enabled, I need to copy all data from shares to one share and then zip it, so let's say it looks like this: Share 1 Share 2 Share 3 -> Share backup Share 5 Share ...
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Easy tips for optimizing Network I/O? [on hold]

We are a small company doing servers in-house, with (unfortunately) no resources to have a full time server admin. Currently we have 4 servers connected on a 40Gb/s fibre optic network, with ...
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14 views

Bad DRBD Performance

I am going currently going nuts because of slow DRBD performance and after many hours trying different parameters I cannot find the problem here. I hope someone is able to help. Regardless of how I ...
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1answer
16 views

nfs-kernel-server starts too early

I have an RPI-based NFS server with an external USB hard disk. After a recent upgrade to Raspbian 8.0 and systemd I noticed that now nfs-kernel-server seems to be starting before all file systems on ...
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linux nfs, is possible to forbid anonymous access?

Is possible on linux to forbid anonymous access to a share nfs? A line like this /export 192.168.0.0/24(rw,fsid=0,no_subtree_check,anonuid=99) /export/share ...
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104 views

Cannot start NFS in Centos 7

I can't start an NFS server in CentOS7. The packages downloaded: yum -y install nfs-utils yum -y install nfs-utils-lib Enable/start services systemctl enable/start rpcbind systemctl enable/start ...
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22 views

Disk mount on a linux VM , mounted elsewhere

Hi I am using a slightly unnecessary(maybe?) kind of a set up ... A debian build_VM The build_VM ran out of space so I formatted and mounted a disk on to the build_VM But before mounting the ...
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18 views

NFS Share with Custom Interface

I have 4 NIC in my server: eth0, eth1, eth2, eth3. It's a storage server with several disks. I have three Volume Groups: vg_share1, vg_share2, vg_share3. I want to share these Volume Groups with ...
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18 views

Find amount of IO occurring over various NFS mounts

When I run netstat | grep nfs, I get the currently mounted nfs connections for a given host in a cluster. If there is massive io happening over 1 (or 2) of the connections, how can I monitor this? Is ...
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16 views

Linux NFS server with two network connections to three systems

I am setting up two new VMWare hosts and will also be adding a Linux (Probably Ubuntu but maybe CentOS) NFS Storage server as the shared storage for these hosts. I would like to connect them directly ...
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14 views

Is there any way to decrypt/read /var/nfs/v4_state logs?

Right at the time our NFS server (Solaris) had an outage lasting a couple of minutes, 3 files popped up in the NFS file server's /var/nfs/v4_state directory. If I cat them, I get a few bits of ...
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Can an NFS stale file handle persist for 2 complete days without any sign?

I have my home directory on an NFS file server, our IT team has moved to another server one week ago. Before the move, I killed all my processes with killall -u my_user_name. After the move, I was ...
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1answer
51 views

NFS permission problem with secondary groups

I have a server running Debian 7 that exports an NFSv3 share, and a client running Centos 5 that accesses it. This works fine, except for one issue with permissions based on non-primary groups. When ...
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2answers
265 views

NFS: mount.nfs: Protocol not supported

I want to mount the NFS share of a Zyxel NSA310s NAS. Showmount, called on the client machine, shows the share: $ showmount 10.0.0.100 -e Export list for 10.0.0.100: /i-data/7fd943bf/nfs/zyxelNFS * ...
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1answer
89 views

Disable NFSv4 (server) on Debian, allow NFSv3

How can the NFS server on a Debian 8 system be limited to NFSv3? By default, shares can be mounted with both vers=3 and vers=4. /etc/default/nfs-kernel-server: # To disable NFSv4 on the server, ...
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63 views

NFS root filesystem doesn't mount at boot

This is an embedded device with a custom kernel (see below for relevant config). It's an x86-32 machine booting like this: coreboot->uboot->linux. I can mount the NFS share in linux if I use ...
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14 views

Exporting parent directory to RHEL boxes

Is it possible to export the parent directory to the RHEL boxes where sub directories of the parent directory is already exported. Source-AIX machine Destination-RHEL machine e.g /usr/atc/abc already ...
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1answer
32 views

Passing automount options in FreeBSD

I seem to be unable to automount nfsv4 shares in FreeBSD 10.1. All of my mounting information is stored in an LDAP database and the shares are on a NFSv4 server. I've gotten the mapping right so ...
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62 views

What would cause NFS file move/delete operations to fail?

Sorry for the terribly vague question. I have a medium-to-large server that all of my engineering users are on. This is a 32-core, 256GB system hosting 19 Xvnc sessions plus the plethora of tools, ...
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1k views

Does bash open files in O_APPEND when using “>>” on linux?

If we use echo 1234 >> some-file then Documentation says that the output is appended. My guess is that, if some-file does not exist, then O_CREAT will make a new file. If > was used, then ...
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36 views

How to solve nsf-common related error when install zsh in ubuntu?

Everytime I install some kind of package, at the last phase, apt-get install could return a common-nfs related error. Why the installation can't be done without this error? detailed pastebin here ...
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45 views

NFS stale mountpoint error

How to check nfs stale mount error on linux , Do I need to cd to the mountpoint and do ls to check output as ?--------- ? ? ? ? ? Is there any file where it gets ...
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1answer
50 views

configuring rsync for incremental backup and recovery

The setup is a NAS box on a lan mounted as NFS and the source is a laptop running an old kubuntu 10.4. Rsync has to be run as a local file copy, NAS box doesn't support an rsync daemon. How do I ...
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247 views

What provides /etc/exports and how do I find that out?

I have two Debian virtual machines that were built from the same netinstall iso, but probably have different packages installed. One of them has an /etc/exports file for nfs mounts but the other one ...
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1answer
89 views

NFS Port Blocking Firewall Issue

I am a little stumped on this one and maybe I have been staring at this for too long...but I cannot get my Mac (10.10.3) machine to connect to my Oracle Linux 7 (CentOS/RH 7) server with its firewall ...
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50 views

how to clear NFS client side cache and server side cache?

I would like to know what is the cache size NFS is using at client side and server side. How to clear it.? Is there a difference between system cache and network cache ?
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31 views

run a script from rc.local, that exists on an autofs nfs share

I mount some nfs exports from a fileserver to my workstation. The workstation is ubuntustudio 64bit 14.04. in order to make the mounts as transparent as possible, I have inserted the following in my ...
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82 views

mv to nfs “cannot create regular file … file exists” but creates empty file

I have an automated script that moves data files from the computer that they're collected on to a central NFS server for more general access. I've recently been seeing about 1% of files failing to be ...
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1answer
78 views

Clustered NFS server reply ERR 24: Auth Bogus Credentials (seal broken)

I have 4 servers on the VirtualBox. Two of the servers are a CentOS 7 cluster with Pacemaker(corosync), and they have an NFSv4 server in Active/Passive mode. There are also 2 clients with CentOS 6, ...
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2answers
71 views

mknfsmnt fails with “System call error number -1”

This system is part of a cluster and the other node mounts the nfs share successfully. This is currently the active node which means it has a secondary service ip address. I think this is related to ...
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62 views

Mounting nfs4 partition over ssh tunel

I am following this manual on how to mount an nfs port over an ssh tunnel: https://blogs.oracle.com/shepler/entry/tunneling_nfs_traffic_via_ssh I need this because I want to mount an nfs partition ...
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2answers
274 views

monitor linux file systems using df

I use df -kh to get the file system usage, but the trouble is if there is any NFS mount failure in any of the boxes the command will hang. Is there a better way to monitor file systems other than df ...
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1answer
72 views

NFS File Mounting error in centOS

I'm trying to mount server filesystem using NFS in centos. But I'm getting Connection timed out error. Below are the steps I followed. At server side: [centos@ip-172-31-46-199 landingzone]$ sudo vi ...
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45 views

mount nas to local folder as non root user

It seems that gvfs would do what I want, but I don't seem to be using it correctly. Let me give a concrete example, I am on a machine as user foo, and user foo has sudo rights. Then I can do the ...
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1answer
69 views

How to keep a redundant home directory for offline use?

Scenario: My home dir is on NFS, identities are in LDAP and authorization is via Kerberos. My NFS, LDAP and Kerberos servers are all VMs -- I'm stretching a little hardware a long way at home. Life ...
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1answer
88 views

Linux user groups and file system permissions

Assume I have groups G1, and G2, and user U. User U is a member of both groups, but G1 is it's primary group. In my file system there is a folder F which is accessible by G2. Now if U wants to ...
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31 views

FS on NFS share responding slow

We have two server ex name app1 and app2.Both server have a nfs mount from same server as below:- nfsserver:/prlocal 249G 190G 46G 81% /prlocal Now the problem is when we try to access the FS ...
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78 views

Can I mount a share and enable the user_xattr mount option?

I have a ext4 drive that is mounted using defaults mount options. It is a RedHat Enterprise Linux version 6.5, 64 bits. I can call lsattr on any file on that server. I need to share that drive with 3 ...
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128 views

how to give read, write and execute permission to other user to access mounted shared directory

I set up nfs server and client on two different servers. On nfs server I create a shared directory. /home/share On nfs client I created mounted point /home/nfs_local now everything is working ...
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443 views

What's wrong with my NFS setup?

I had previously been able to configure an NFS server on a computer running CentOS 6.6, and to mount the file system in a Virtual Machine with the same OS and using autofs. Last week I did a fresh ...
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2answers
291 views

Which version of NFS is my NFS server using?

I'm mounting a NFS filesystem on my machine. How do I figure out what version of the NFS protocol the server uses? I don't have access to the NFS server machine, but I do have root on my client ...
2
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1answer
66 views

Let root read all files on NFS directory, even though server has root_squash enabled

I have a NFS directory that is used by multiple users, and hosted on a NFS server that I do not control. I would like to back up the contents of the NFS directory from my client machine. My first ...
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2answers
139 views

Strange firefox bugs following migration of home areas to NAS drive

We run a small linux cluster of 20 hosts running rhel(5and6). Each host has a native user nm with the home area mounted on the machine /export/home/nm. We use NIS/NFS for individual user accounts. ...
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2answers
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NFS no longer mounts: rpc-statd fails to start

Whenever I try to start an NFS mount I get: Feb 12 00:02:19 martin-xps.lico.nl rpc.statd[23582]: Version 1.3.2 starting Feb 12 00:02:19 martin-xps.lico.nl rpc.statd[23582]: Flags: TI-RPC Feb 12 ...
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37 views

Mount.nfs is using a serial port

I export a folder to remote hosts by configuring the /etc/export file this way in the NFS server: /remoteFolder 172.22.0.0/255.255.0.0(ro,no_root_squash,sync,insecure) and start the NFS daemon with ...
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64 views

View syscalls/kernel activity for I/O from a running process

I'd like to be able to view syscalls or kernel activity for a process...I'm not actually sure of the terminology I need here! Specifically I'm looking for the difference between I/O going to local ...
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88 views

Home server bottleneck (filesystem server)

I am trying to set up a filesystem server, so that I can use my various laptops to transparently mount a directory containing many VirtualBox VMs, some of which run full graphics environments. I will ...
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144 views

Is there a “supported” way in RHEL/CentOS 7 to union-mount a directory tree on top of an NFS mount point?

I have an NFS share containing almost 500 chrooted (s)ftp user's home directories. This NFS share is mounted on several FTP servers forming a highly available FTP cluster. I would like to enable ...
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138 views

LDAP and NFS on two different servers

I have an LDAP-server running on one server and an NFS-server running on another server. This arrangement seems to work providing I manually configure the LDAP users UID, GID home directory location ...