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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9 views

“nfsd peername failed” but NFSv4 service functions

My current setup: 2 NFS servers sharing the same directory with identical content, 1 keepalived server as SLB (or rather for failover in this scenario), and 1 NFSv4 client mounting through VIP. All ...
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115 views

Map a NFS share as a drive in the SBS Group Policy Editor

For the moment I am not capable to access a NFS shares under SBS 2011. I tried to set the NFS share name in the Group Policy Editor hoping it will be resolved in the Terminal Server session where the ...
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22 views

Should NFS consecutive writes then reads be consistent across hosts?

For $work I am writing several thousand files to a directory mounted on NFSv3. Once the process writing the files has completed, a process on another machine starts to read them. The problem I am ...
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17 views

Cannot run pNFS block layout on Linux

I try to run pNFS on Linux with 3 node (all nodes are Debian 7, kernel linux 4.6.0) : Data Server: iscsitarget is installed on this node, it share a LUN Meta Data server: In the kernel config, I ...
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30 views

Cannot run ctl on Linux for pNFS

I want to install pNFS server. I install ctl from source code. But when I run command ctl -u, the error below occur: /proc/fs/pnfs_block/ctl: No such file or directory I run linux 4.6, the ctl ...
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8 views

Pool remote file shares into single volume

I have multiple file shares available to use as backup storage. Each one can be mounted over CIFS/NFS. Instead of mounting them all individually and trying to manage what files are stored on each one, ...
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14 views

Cannot start service blkmapd for using pNFS

As I know, to use pNFS block layout, I must start blkmapd at the client side. But when I try to start blkmapd by command blkmapd -f, the error below occur blkmapd: open pipe file ...
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2answers
65 views

mount.nfs: Failed to resolve server

I have a problem with nfs client not being able to resolve a resolvable DNS name. [root@testserver-2 ~]# host nfs-server-host-name nfs-server-host-name has address 10.37.4.131 [root@testserver-2 ~]# ...
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1answer
46 views

NFS drive full even though du says it's not [closed]

I am experiencing a very weird behaviour of my backup drive that I can neither explain nor get fixed. I have an external drive mounted via NFS. I regularly call rsync jobs that backup files from my ...
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26 views

High server loads with NFS mount on a remote Windows server's NFS share

From a SLES 11 Linux, used as Oracle DB server, I've a remote partition always mounted. The remote partition is a NFS share served by a Windows 2008 R2 with NFS Server component (Please ... don't ...
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1answer
60 views

openldap user can't login when using tcsh

I would appreciate any help in the following problem: I have an openladp (2.3.39) server (Fedora 8) which authenticates users from other ldap clients (various versions of Fedora). On my attempt to ...
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14 views

gssproxy: apache httpd as nfs-client? centos7

When Apache httpd attempts to access a user directory automounted with sec=krb5p, and presumably other sec=krb options, gssproxy issues a failure message and the web server replies with 403 Forbidden. ...
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1answer
28 views

Why does SSHFS I/O latency test much faster than local RAID & NFS?

SSHFS tests for server I/O latency using dd returns very surprising results, so much so that I'm worried this might be some problem either with the test method or configuration. Test 1 on local RAID ...
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16 views

Attribute interpretation of nfsiostat in sysstat

I am trying to understand the data being presented by nfsiostat. On NFS_client I am reading a 50 MB file("abc.txt") in NFS-Mounted directory. Reading of files "abc.txt" is happening at an interval of ...
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21 views

rsync NFS charset issue

I am trying to sync data to a NFS share provided by a Dell Compellent FS8600 NFS appliance. I am trying to sync files with characters that are non-ascii, and I get this error: rsync: ...
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22 views

Cannot access nfs share

On my Debian 8.4 system, I would like to run a postgres database. The data should reside on an NFS mounted folder. # cat /etc/fstab xxx.xxx.xxx.xxx:/volume1/srvPostgres on /var/lib/postgresql type ...
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23 views

I'm having random nfs slow downs on my nfsv4 gigabit network which cause videos to slow down then speed up

I've noticed this issue happen in two different video players so I'm pretty sure it's a network problem. I'm running Ubuntu with the kernel 4.2.0-35-generic. Here is the result of my nfsstat -4 -s ...
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26 views

User Unable to Change Group Owner of File on NFS

I've created a user, say testuser, with a home directory located in /home-nas/t/testuser/. I've added testuser and testuser1 to a group called testgroup and asked each user to log out and log back in. ...
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0answers
33 views

Lustre alternative for 70-node scientific cluster

Our lab has a cluster with 70 compute nodes 4 IO nodes Infiniband QDR interconnection 12T disk array accessed using IB SRP protocol The major application is debugging and running MPI-based ...
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80 views

NFS client fails with “Protocol not supported” even though the protocol is listed as available

I set up an NFS serve for Proxmox to remotely backup VM images there. For some reason the Proxmox box won't connect to the NFS server. I tested connecting with another the NFS client on a different ...
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11 views

FTP Transfers Dropped- 421 time out

I have a VM that is mounting two NFS servers, lets call them NFS-A and NFS-B. The VM will transfer a file from NFS-A to NFS-B and as it should the VM will be the middle man as the file transfer ...
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1answer
64 views

How to use pNFS in NFSv4.1

As I know, pNFS is an extended protocol over NFSv4.1. So, I have two questions: How to use pNFS in NFSv4.1? Is there any special requirement for kernel version in server side?
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2answers
39 views

SAN - NFS and CIFS

I am an application developer and very new to storage and SAN technologies, So this is a very basic question. Recently I had a requirement to have common storage share mounted on both Linux and ...
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0answers
28 views

anonymous cifs client can't read files created with nfs

I'm sharing a windows folder using both nfs and a windows share. The windows share has read permissions for Everyone. The nfs share has write permissions (with "Allow root access") for a specific ...
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1answer
50 views

Mounting Windows NFS share from RHEL7 - uid/gid show as 4294967294

I need to mount a directory on a Windows Server 2012 system with rw access for local user apache. If I mount with defaults: server2012:/sharedir /appfolder nfs defaults ...
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2answers
36 views

For *nix server/Windows clients, what are the pros and cons of modern NFS v. Samba/SMB?

As the question says. There's a lot of threads around on NFS vs. Samba/SMB, but a lot of them are outdated or refer to old security models, or just give a one-line "use SMB with Windows". Both ...
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1answer
19 views

Not able to mount shared drive on server A to server B

I am not able to mount a drive that is located on server A to server B. I have followed this document step by step just replacing portmap to rpcbind as the system installed rpcbind instead of portmap. ...
2
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1answer
29 views

NFS - Multiple sub dirs - Only one squashing as expected

Getting an unexpected behavior when mounting more than a single share. NFS Server $ -> cd /mnt/raid/nas && ls -lZa drwxrwxr-x. nas filer unconfined_u:object_r:file_t:s0 file ...
2
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1answer
43 views

Different IOPs measured on server and storage

so I have this strange behavior that I can not explain to myself - hopyfully someone here can. We received some server (hardware) and mounted an NFS drive. We plan to use these servers as Splunk ...
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26 views

Testing Custom Linux Backup Script Which Connects to NFS Windows Share

Good morning, I have configured server for NFS on Windows Server 2012 R2 and I have created and shared an NFS share. Access permissions are configured using the NFS shares NTFS permissions. We have ...
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18 views

NFS client latency spikes on KVM host machine

We run a small OpenStack environment with KVM hypervisors and shared NFS storage. The problem is: guest KVM machines' CPU usage spikes make NFS client latency grow. For example: same NFS volume ...
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2answers
16 views

Open the folder as another user in Debian

I have logged to my debian as root using ssh. Than I have mounted some foler from my NAS using mount -t nfs 192.168.1.222:/nfs /media/nfs. Now I can access all subfolders. Exept /media/nfs/somefolder, ...
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1answer
46 views

NFS4 ID Mapping

Currently using NFS4 idmapping. If i manually update the file "/sys/module/nfsd/parameters/nfs4_disable_idmapping" on the NFS Server to "N" and flush the cache the UID and GID show up correctly on ...
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3answers
44 views

File permissions are being changed after gunzip of .gz file; how do I prevent that?

I have an NFS4 filesystem that has AD based authentication setup and ACLS to match. I am controlling access to the machines that mount the filesystem so the ACLs are very basic. One prevents users ...
1
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1answer
63 views

Improve NFS performance for Windows NFS client to Linux NFS Server

I have a CentOS 6.7 server as an NFS Server, and I have a 3-4 Windows 7 (Enterprise) PC's using Windows NFS client to mount the NFS exports. The problem I'm having is this: The Windows clients can ...
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22 views

Does an NFS client incur read/write page faults proportional to bytes read to/written from server?

Perhaps my knowledge of virtual memory has been supplanted by too much other junk. Recently I ran some database benchmark tests where all data was to be stored on an NFS server and accessed via NFSv3 ...
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1answer
28 views

Wrong SELinux labels on NFS homes?

I have NFS (v4) home directories. The NFS server is a Synology (DSM 5.2), the client is a FC 23. The client gets autofs settings from a freeIPA server: ipa automountmap-add default auto.home ipa ...
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3answers
59 views

NFS mounts depending on other NFS mount fail to mount at boot

I have setup 5 NFS mounts in /etc/fstab. The first one "parent" mounts on local mount point /foo and the other 4 "child" in mounts points on the first one: So let's say the second is /foo/test1. The ...
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0answers
20 views

NFS mount not honoring umask

I have an NFS mount exported as below that I mount with: sudo mount -t nfs host:/share /mnt/dir -o rw cat /etc/exports "/share/Name" ...
1
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1answer
96 views

How to place Docker images ontop of an NFS share in CoreOS?

I have installed CoreOS which by default using loop-back device with size of 100GB and I have reached that limit very easily. My first idea was to place all the images on top of my NAS using NFS with ...
0
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1answer
17 views

NFSv4 with Kerberos - idmap stops working after ~35 minutes

All machines are running CentOS 6.5. We have about 85 client machines doing a Kerberized NFSv4 mount (sec=krb5p) to a server. This weekend, the server was changed (serverA changed to serverB). ...
3
votes
2answers
241 views

ESXi 6.0 has stopped mounting NFS Shares

After a reboot of a ESXi 6.0 server it will no longer mount several NFS shares being hosted on a Windows Server 2012 R2 box. Previously these shares were working fine, but now any NFS mount is met ...
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0answers
22 views

keep writing to file after network filesystem disconnects

I'm trying to transfer a huge growing logfile in a way that will survive network partitions between the client and server. If the network connection is lost, I cannot afford to retransmit the entire ...
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0answers
20 views

What is the maximum NFS exports possible in Linux?

What is a definitive number for the maximum NFS4 exports possible in Linux? I'll be specific, Centos 7. (which is Kernel 3.10) My searches are turning up numbers from 100-800 (mounted) exports ...
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1answer
36 views

Access history for NFS server

I have a server (OS: Debian), in which nfs-kernel-server is installed and run. When a NFS client access or read, write to a file or directory in the NFS share directory, I want to capture and save all ...
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1answer
63 views

Input/output error when attempting to mount a Windows NFS share

I created the Windows Server 2012 share using: PS C:\Windows\system32> nfsshare testshare2=C:\testshare2 -o anon=yes anonuid=0 anongid=0 rw=uuu.uuu.uuu.uuu testshare2 was shared successfully ...
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1answer
42 views

Mounting a share with white spaces in name using Solaris

I am trying to mount a file system on Solaris that includes white space in both target and source names. for example: nas:/shares/windows/international/Financial Data/OEM/Connect Direct - ...
1
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0answers
77 views

Speeding up GlusterFS in AWS

I needed a good NFS storage cloud in AWS, and since EFS is just in preview mode, I did some research, and GFS looked like it would be the best bet. Currently, I have two servers that are part of one ...
2
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1answer
36 views

Determine NFS usage based on client

We have big NFS server (~50TB of data, millions of files). 12x 6TB SATA disks w/ SSD cache (MegaRAID CacheCade). CentOS 7. 1x Xeon E5-2620 Our problem is that we have ~100 processes from 6 servers ...
0
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2answers
79 views

NFS mount in Windows - can't copy files with 600 permissions

I have a Netapp with some NFS exports for VMware storage. I want to mount the snapshots on a Windows 2012 R2 server in order to copy all of the virtual machine files to tape. I can mount the share ...