I did : sudo ufw allow from 192.168.1./24 to any port 2049 sudo ufw allow from 192.168.1./24 to any port 111. My suggestion to you would be to consider moving from NFS 4 to NFS 3 and see if that helps your particular use case. PSE Advent Calendar 2022 (Day 11): The other side of Christmas, MOSFET is getting very hot at high frequency PWM. rev2022.12.11.43106. NFS client mount hang due to packets loss NFS client mount hang due to packets loss Save as PDF Share Views: 205 Visibility: Public Votes: 0 Category: ontap-9 Specialty: nfs Last Updated: 11/19/2021, 1:23:51 AM Table of contents Applies to Issue Applies to ONTAP 9 NFSv3 NFSv4.x Issue NFS client mount hang. I have made sure that on the client any firewall and selinux is disabled. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? All systems must have the same MTU configured. You should then be able to ping the address, and you should also be able to unmount the filesystem (use unmount -f). Can the client reach the server? This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document. Environment Any Linux system acting as an NFS client (aka having a mount of type "nfs"). Building, Burn-In, and Testing your FreeNAS system, How-to: First Configuration for Small FreeNAS Deployments, Guide how much will a proper home freenas setup cost me, Scripts to report SMART, ZPool and UPS status, HDD/CPU T, HDD identification and backup the config. Learn more about our award-winning Support. Slideshow explaining VDev, zpool, ZIL and L2ARC for noobs! clnt_create: RPC: Port mapper failure - Timed out. How do I arrange multiple quotations (each with multiple lines) vertically (with a line through the center) so that they're side-by-side? Use the traceroute command to determine which ip address the client is using in its mount request. Does a 120cc engine burn 120cc of fuel a minute? The devs option allows you to use NFS-mounted device files to read and write to devices from the NFS client. In this tutorial, we will see the difference between soft and hard mounts in NFS. The only way I've been able to remedy this so far is to stop any hung processes, force an unmount (umount -f), then perform a mount again. A client can then mount the remote filesystem on the mount point. Do non-Segwit nodes reject Segwit transactions with invalid signature? It looks like this caused the NFS connection to hang for some reason. I'm now experimenting with these options, but am not getting the behaviour I expect: NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. kernel: nfsd: last server has exited. How is Jesus God when he sits at the right hand of the true God? rev2022.12.11.43106. NFS mount failure due to "exports.hostname.transient:error", NFS mount hangs due to half-open TCP session after network or firewall maintenance (7-mode). Counters under the TcpExt heading such as retransmits or congestion may indicate external packet loss. Total frames: 206m | Frames/second: 284k | Total bytes: 261g, Bytes/second: 359m | Total errors: 0 | Errors/minute: 0, Total discards: 590k| Discards/minute: 49 | Multi/broadcast: 809, Total frames: 255m | Frames/second: 351k | Total bytes: 357g, Bytes/second: 492m | Total errors: 0 | Errors/minute: 0, Total discards: 0 | Queue overflow: 0 | Multi/broadcast: 148. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. What I would like/expect to happen for the operation to fail, and return control. In . I have been mounting the shares with "default" options just to get things workking, but now I am hoping to optimize my configuration. To learn more, see our tips on writing great answers. Commands hang on an NFS mounted filesystem Subject: On a hard-mounted file system, NFS operations are retried until they are acknowledged by the server. intr should allow for you to get control again when you hit ^C, but usually not immediately. Why doesn't Stockfish announce when it solved a position as a book draw similar to how it announces a forced mate? Ready to optimize your JavaScript with Rust? To confirm packets loss viausingthe following filter in Wireshark. I am running this command : mount -t nfs -v 10.17.25.27:/DATA/projects/assets-db/log-apache test, My NFS server is : 10.17.25.27, the client IP is 10.17.25.152. Thanks for contributing an answer to Unix & Linux Stack Exchange! Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Network problems can be temporary, but failing an operation is permanent. 1.) On the client make sure the kernel has the CONFIG_PNFS_BLOCK option enabled, the blkmapd daemon from nfs-utils is running, and the file system is mounted using the NFSv4.1 protocol version (mount -o vers=4.1). However, we were able to make it work again after we upgraded the kernel from version 3.10.0-514.26.2.el7.x86_64 to 3.10.0-862.11.6.el7.x86_64. RECEIVE At this stage, system administrators also can try to umount the stuck mounts. Our NFS options were minimal, just rw (and so the defaults hard, fg, etc). This allows the client to access files on the remote filesystem as if they were on the local filesystem. Often (not always) this will take the form of a TCP SYN packet being sent but getting no reply. Making statements based on opinion; back them up with references or personal experience. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. One big benefit of running HP-UX 11.23 on NFS clients is the new forcible unmount feature. Is there any way to detect this again please? Was the ZX Spectrum used for number crunching? Build FreeNAS-9.2.1.9-RELEASE-x64 || Platform Intel(R) Xeon(R) CPU E3-1230 V3 @ 3.3GHz, Build FreeNAS 13.0-U2|| CPU: Intel Xeon e5-1650 || 8x16GB Samsung DDR4-2133 M393A2G40DB0-CPB || Supermicro 846e16-r1200b || X10SRL || Chelsio T520-CR LACP. An NFS client hangs on various operations, including "df". Ready to optimize your JavaScript with Rust? Where 192.0.2.55 is the IP of the NFS server that went away. How could my characters be tricked into thinking they are on Mars? Linux is a registered trademark of Linus Torvalds. NFS file lock operation hangs when NFS share is mounted using a certain FileStore NFS server IP addresses. Where does the idea of selling dragon parts come from? This tells the EFS mount helper to pass your credentials to the EFS mount target. NFS hard and soft mounts When the backup-archive client connects to an NFS file system, you can use either a hard mount or a soft mount. mount.nfs: access denied by server while mounting Why was USB 1.0 incredibly slow even for its time? Is there a higher analog of "category with all same side inverses is a groupoid"? Connect and share knowledge within a single location that is structured and easy to search. rm: cannot remove directory `/nfs/server2': Device or resource busy. The relevant thread is this one, which is waiting in Ceph while holding the content_lock: Thread 197 (Thread 0x7f694dbfa700 (LWP 81856)): #0 0x00007f696b3cc995 in pthread_cond_wait@@GLIBC_2.3.2 from /usr/lib64/libpthread.so. Arbitrary shape cut into triangles and packed into rectangle of the same area, Examples of frauds discovered because someone tried to mimic a random sequence. Decent storage and works fine with iSCSI and CIFS, with LACP with two interfaces. If my image servers had been as unreliable I suspect I might well have settled for. [Unit] Description=Mount Share at boot [Mount] What=myserver:/media Where=/mnt/NFSDrive Options=noauto Type=nfs TimeoutSec=30 ForceUnmount=true [Install] WantedBy=multi-user.target (Although it might be possible to SSH into such a frozen machine in some cases.). If the images host goes down and we use, @DougMcLean having also been in a similar situation (busy web farm, image servers, NFS) I would say it's a somewhat specialised case. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? We recommend that you use the largest size possible . Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. (PS: I also tried mounting with autofs, but saw similar behaviour). Name of poem: dangers of nuclear war/energy, referencing music of philharmonic orchestra/trio/cricket, Received a 'behavior reminder' from manager. NFS mount getting hanged on client machine after some time and I have found the following message on my NFS server. NFS mount commands hangs on client indefinitely after server reboot. Where does the idea of selling dragon parts come from? But the problem is, when especially the NFS Server is totally dead or stopped, even the, ls command, into that directory, at Client-side is hanged or died. I have three NFS clients working (2x Linux Mint 17.1 and 1x Crunchbang) I have one NFS client that just hangs when I run mount.nfs4. NFS client is hanging and a reboot on the client is required to restore the NFS mount A network event (such as a SVMDR cutover to new DNS servers) occurred, leaving stale NFS mounts. The best answers are voted up and rise to the top, Not the answer you're looking for? It is not possible to KILL a process because the entire system freezes. It may not display this or other websites correctly. I try to rm -r /nfs/server2 but I get. Hardware recommendations (read this first). How to make voltage plus/minus signs bolder? To learn more, see our tips on writing great answers. NFS mount commands hangs on client indefinitely after server reboot. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This value applies when reading data from a file on an EFS file system. A side effect of hard-mounting NFS file systems is that processes block (or "hang") in a high-priority disk wait state until their NFS RPC calls complete. I have very little experience with NFS shares, so I am looking for guidance as to the best options to use on my mount statement in /etc/fstab . Shared folders were mounted on the client server. If my memory is correct, this system freeze problem was also present in NFS v3. - Specify nodevs if device files mounted from a server will not work correctly for reading and writing to devices . This issue can occur if your NFS client does not have permission to mount the file system. On the server, pNFS block volume support is automatically if the file system support it. Check the MTU settings on the NFS Client, the NFS Server, and throughout the path from the NFS Client to NFS Server. Or perhaps the client can't resolve the server name. The best answers are voted up and rise to the top, Not the answer you're looking for? Man says it's ignored in recent kernel versions. This technical paper talks about different strategies available on systems prior to 11.23. The "fake" file server will come up and start rejecting NFS requests from affected hosts, releasing the stuck processes. It is useful for maintaining a standard, centralized set of device files, if all your systems are configured similarly. NFS seems to be an extremely fragile filesystem and if either your network or the server itself are not 100% stable, you have a problem. Preventing broken NFS connection from freezing the client system. Where I have facts I will (try to remember to) link to them. Add -v to your mount command. However I'm trying to get NFS working with its own mount, everything looks fine on the server, but when I connect the mount command hangs and will time out. We recommend the following default values for mount options on Linux: rsize=1048576 - Sets the maximum number of bytes of data that the NFS client can receive for each network READ request. Access Denied by Server. Means, the script above is no more usable. NFS: UDP works, TCP times out, CentOS 6.9 fresh install, When trying to nfs4 mount a share with sec=krb5 I get "not exported" error message on nfs server. How were sailing warships maneuvered in battle -- who coordinated the actions of all the sailors? Do you get the same behaviour without the, @UpTheCreek, I don't understand why that would be. I have already configured a NFS server and client to demonstrate about NFS mount options and NFS exports options as this is a pre-requisite to this article.. NFS Exports Options. This allows you to use the "umount -f" command to forcibly remove a hung NFS mount point from the client without having to reboot the client. Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! I've been banging my head against a wall on this one and just can not for the life of me figure out why this isn't working. If you don't see the NFS ports and it's not a firewall problem, you could have a routing problem. Commands like df, ls and umount directed for the NFS mount are hung Linux hosts experience NFS stale mounts randomly At this point the command line freezes, and I can't interupt it. NetApp wins prestigious ECKM award for Knowledge Management. As far as I can tell, I have everything set-up correctly. Are the S&P 500 and Dow Jones Industrial Average securities? Or you have the server in the client's /etc/hosts with a typo in the address. We have had some issues recently where network outages would freeze the client systems. Hard vs Soft NFS mounts. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? I need to mount this NFS share in the same exact place on server1 (at /nfs/server2/share) because other software on server1 depend on this. Next I tried to remove /nfs/server2 so I could just recreate it. They have exactly same environment with exactly same iptable rules. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, @roaima - Thanks. Look for evidence of packet loss outside the system by running netstat -s on RHEL. I am running this command : mount -t nfs -v 10.17.25.27:/DATA/projects/assets-db/log-apache test My NFS server is : 10.17.25.27, the client IP is 10.17.25.152 I have enabled syslog debug for nfs and I see these errors : Thanks for contributing an answer to Server Fault! NetApp wins prestigious ECKM award for Knowledge Management. ls -la /usr) does NOT hang. If he had met some scary fish, he would immediately return to the surface. issues has been resolved, I did two things first the file i mount with small letter it should be capital, miss-type (:, another thing is nfs-common service was dead/mask and has symbolic link to null: /dev/null so i tried to remove symbolic link and reload daemon to recreate again and it works fine Thank you for your appreciated time in support Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use. NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. On the ECS side, configure the NFS share. Can some help understanding whats causing this? Thanks, but I'm not able to switch to NFS3, and even if I were, as you say, "I wouldn't recommend soft under any circumstances" - really? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You should then destroy the aliased interface so you no longer route traffic to the old NFS server to yourself with: ifconfig eth0:fakenfs down I was unable to find the discussion about why the option was removed. Irreducible representations of a product of two groups. A network event (such as a SVMDR cutover to new DNS servers) occurred, leaving stale NFS mounts. NetApp wins prestigious ECKM award for Knowledge Management. Some of them can not mount NFS share and I have no logs about that. At the bottom of the file, add a line for each of your shares. So now I'm at a loss. Learn more about our award-winning Support. Asking for help, clarification, or responding to other answers. UNIX is a registered trademark of The Open Group. These mount options define how the NFS client should handle NFS server crash or failure. Here are the some sample errors that may appear in the /var/adm/messages file when the "ls -la /" hangs: Step 7 Mounting the Remote NFS Directories at Boot. I have enabled syslog debug for nfs and I see these errors : When I run rpcinfo -p 10.17.25.27 on the client, I see : Note that mounting with version 3 of NFS works but I need features from the version 4, so I cannot downgrade to this older version of the protocol. A client can experience this issue in various forms : Sign in to view the entire content of this KB article. An NFS server is a host that owns one or more filesystems and makes them available on the network; NFS clients mount filesystems from one or more servers. rw,soft,bg,retrans=6,timeo=150, (I've increased the retrans to offset some of the soft risk). NFS mount points unreachable and df hangs - DbAppWeb.com NFS mount points unreachable and df hangs March 8, 2018 DbAppWeb Admin Problem I had an NFS server from which some folders were shared with the client-server. check the option "Services for NFS", then click OK. Situation A Linux system has mounted a remote file system via NFS. We are running NFS server on CentOS 5 box, the server running 2.6.18-92.el5 kernel x86_64, my client systems also running same kernel. Dynamic failover of read-only file systems provide a high level of availability for read-only resources that are already replicated, such as man pages, other documentation, and shared binaries. I don't have a debian system here but it's explicitly mentioned as available. On average, every 24-48 hours, the mount on the client will stop responding - anything that attempts to read/write from it will just hang. Not sure if it was just me or something she sent to the whole team. Support Account Managers & Cloud Technical Account Managers, NetApp's Response to the Ukraine Situation. Installing GlusterFS. Yeah, I tried it, and it didn't seem to have any effect. Also I tried sudo service portmap restart and i got portmap: unrecognized service. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. NFS mounts getting unmounted, possibly by the kernel, systemd: failed to mount NFS share: mount.nfs: Network is unreachable until later in boot process, NFS client resetting another NFS client file pointer. Failover can occur any time after the file system is mounted. We did not find as to why our NFS suddenly went down and after restart, clients were not able to mount any exported filesystem. JavaScript is disabled. NFS client ls command may fail to detect any new files created due to client caching, NFS client received "permission denied" accessing NTFS security style volume with error "Administrative limit exceeded". If you are attempting to mount the file system using IAM, make sure you are using the -o iam option in your mount command. Manual mounts can now list multiple replicas, much like the automounter in previous releases. The client is mounting a folder on the server via NFS (v3). Network packet captures show that the NFS client is sending out packets destined to the NFS Server's port 2049, but no responses are seen. # device mountpoint fs-type options **** fsckord your.share:/home /backup nfs rw,hard,intr 0 0. you can't kill the process (kind of) if you don't specify intr. Please could someone tell me where I'm going wrong with these settings? Packets discard on the port. Don't think of it as a downgrade. NFS Server Side (NFS Exports Options); NFS Client side (NFS Mount Options); Let us jump into the details of each type of permissions. In my case, I have a busy web server that mounts an images directory. Error Message The NFS client application issuing the NFS file lock request hangs. On a Linux NFS client, an strace of the program issuing the file lock request will show the following: nfs_client$ strace -fFr /usr/bin/flock fileA -c /bin/true My work as a freelance was used in a scientific paper, should I be included as an author? That opinion seems to be very prevalent on the web :) Trouble is the current situation we have with, I think that the thing that differs from the 'standard' answers is that you're changing current working directory to the mount point. Why is the federal judiciary of the United States divided into circuits? It only takes a minute to sign up. Learn more! Try 'nmap -sT svm04.domain' from the client. (The user is usually not aware that any packet loss or recovery attempt . Why does the USA not have a constitutional court? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company. Pre-requisites Setup NFS exports Server Configuring NFS Server is not covered as part of this article so I will assume you already a NFS server up and running. - Install GlusterFS client package using one of the following commands: # yum install -y glusterfs-client # Centos / RHEL # sudo apt-get install -y glusterfs-client # Ubuntu. Add an attachment (proposed patch, testcase, etc.) 2.) linux bash shell nfs nfsclient Share Improve this question Follow asked Jul 12, 2013 at 9:44 How can I use POSIX ACLs on an NFSv4 mount in Linux? - Create a directory on the client machine where you would want to mount the GlusterFS volume. With over 10 pre-installed distros to choose from, the worry-free installation life is here! NFS mount can be done in either as a soft mount or hard mount. Is it illegal to use resources in a university lab to prove a concept could work (to ultimately use to create a startup)? Connect and share knowledge within a single location that is structured and easy to search. however the client just hangs and acts like nothing is happening and eventually times out. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document. On the server is the following exports: The only time I've seen this is if there is a firewall between the client and server. Sign in to view the entire content of this KB article. This is the standard answer, but looking at a current man page I see this: So it doesn't appear to me to be a NFS3/NFS4 issue, but a decision about how intr works. 3 I have an NFS server running Ubuntu Server 14.04.1 with KRB5. Help us identify new roles for community members, Debian NFS wait too long when the other Debian is turned off, KDE/Qt file dialogs locking up on network drive problem -- how to disable network drive queries, NFS Share Locking Workstations in Closed Network. Description Deepak J 2019-01-22 01:17:44 UTC Hi, I am using RHVH 4.2 as the host which also acts as an nfs client. So most operations default to simply blocking until the operation completes. Using NFS protocol, the NFS client can mount the filesystem existing on a NFS server, just like a local filesystem. NFS exports options are the permissions we apply on NFS Server when we create a NFS . Install the NFS Client (Services for NFS) what can be enabled from Windows Control Panel: Open Control Panel and search for "Turn Windows features on or off". An NFS mount point is a directory on a local filesystem to which an NFS server can export a remote filesystem. "intr This will allow NFS4 operations (on hard mounts) to be interrupted while waiting for a response from the server.". This share had some problem and had to be unmounted and remounted. We tried to restart all the servers, to open all the ports between the machines but nothing did the trick. Support Account Managers & Cloud Technical Account Managers, NetApp's Response to the Ukraine Situation, NFS client is hanging and a reboot on the client is required to restore the NFS mount. kernel: nfsd: unexporting all filesystems. And I tried again for showmount but then again the terminal give me this. This occurs when the NFS client system is noticing packet loss and attempts to recover by closing the NFS connection and opening another. We have an NFS 4 share, sharing a volume between a number of servers (NFS server, and clients all Debian 8). Once those two steps are complete, the network service on Admin needs to be restarted with /etc/init.d/network restart . Do bracers of armor stack with magic armor enhancements and special abilities? So you should be able to KILL the process, but that may not give you much utility. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Appreciate you inputs. You can mount the remote NFS shares automatically at boot by adding them to /etc/fstab file on the client. Step 3./. The client uses the nfstimeout option value to determine how long to wait for an NFS system call to respond before timing out; this setting applies to hard and soft mounts. you can handle in two ways soft (the magic recipe for corrupted data) and hard (the way to holiness) try this. This document (000020830) is provided subject to the disclaimer at the end of this document. NetApp wins prestigious ECKM award for Knowledge Management. I have verified that FreeNAS can ping the client. What we see is guest vms running hangs as the nfs client mount point on the hangs when nfs server fails over. You are using an out of date browser. No commands can be issued in my experience. New NFS mount attempts, pointing to the same server, may also hang. And the system logs ( i.e. The syntax of the command is as follows: nfsstat [ -cmnrsz ] -c Displays client-side information -m Displays statistics for each NFS-mounted file system -n Specifies that NFS information is to be displayed on both the client side and the server side -r Have you tried it? I've got FreeNAS installed on a dedicated box. Examples of frauds discovered because someone tried to mimic a random sequence. My suggestion to you would be to consider moving from NFS 4 to NFS 3 and see if that helps your particular use case. The NFS Automounter ( autofs) works well for my use cases with NFS versions 2 and 3, and manages to help protect my client systems from server failure by mounting the NFS filesystems only while they are required. You can use this command to gather statistical information about NFS and RPC connections. Refer to the ECS Administration Guide for what can be downloaded from https://support . As you say, expectations are the problem here. Add a new light switch in line with another switch? mount: list filesystems mounted by a NFS client Useful Commands verbose mount mount -v showmount rpcinfo exportfs Failures mount hangs I've seen cases when trying to mount a filesystem from other machinehangs if nfs is not started on that machine(service nfs start). Hangs on df -h or when cd to the /server mount point. /var/log/messages on the redhat client report: Aug 27 17:37:12 localhost kernel: nfs_statfs: statfs error = 512 Aug 27 17:37:27 localhost kernel: RPC: error 512 connecting to server machine_name there is also this error: Code: Aug 27 17:37:28 localhost kdesktop_lock: Code: Why does Cauchy's equation for refractive index contain only even power terms? The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. Recommended NFS mount options. Help us identify new roles for community members, "mount: RPC: Timed out" when attempting to mount NFS filesystem. Most of clients can connect and mount an exported NFS share directory normally, without any problem. After a SLES 11 NFS client mount has been in use for some time, or under heavy load, the mounted area may stop responding (i.e. Server Fault is a question and answer site for system and network administrators. I have 2 shares defined in freenas, a RO share and a RW share. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Register for the iXsystems Community to get an ad-free experience. Step 2./. Mounting GlusterFS Volume. Making statements based on opinion; back them up with references or personal experience. Answer For example, if the NFS client is configured with multiple ip addresses such as aliases or the client is multihomed the mount request may use an ip address that the NFS server is unable to resolve. Disable lacp you probably set it up wrong. z/OS NFS client users can also experience a hang when trying to update a data set concurrently on an NFS mount point that was mounted with the text processing attribute and the attrcaching (y) parameter while the same data set is also being updated by users and applications via mechanisms outside of the NFS protocol. Below is my systemd enabled mnt-NFSDrive.mount file to mount my nfs drive. Open this file with root privileges in your text editor: sudo nano /etc/fstab. Can you kill -KILL your process? The default is 0 seconds. After some time the message 'nfs: server [servername] not responding, timed out`, which seems to repeat once a minute (indefinately). Stop broken NFS mounts from locking a directory? "hang"). Browse other questions tagged. Exports: df command hangs on NFS client after mounting NFS Solution Verified - Updated November 26 2019 at 9:50 AM - English Issue When trying to run df -hT command, it hangs Environment Red Hat Enterprise Linux 6.x Subscriber exclusive content A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more. /var/adm/messages) shows NFS related errors, even though this is NOT a true NFS client. Linux hosts experience NFS stale mounts randomly. Central limit theorem replacing radical n with n, What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. Do you have a firewall between the two devices? Running "ls -la /" hangs, yet running "ls -la" to other root directories (i.e. Learn more! Some of my answer is opinion, based on experience. Disconnect vertical tab connector from PCB. Why do quantum objects slow down when volume increases? It only takes a minute to sign up. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I am on CentOS 7.2 with kernel 3.10.0-514.26.2.el7.x86_64. The following are the steps in my configurations for the nfs: NFS server: sudo apt-get install nfs-kernel-server sudo mkdir /var/nfs/general sudo nano /etc/exports /var/nfs/general * (rw,sync,no_root_squash,no_subtree_check) sudo exportfs -a sudo service nfs-kernel-server start NFS client: For a better experience, please enable JavaScript in your browser before proceeding. Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? Asking for help, clarification, or responding to other answers. But I see no logs or feedback on either the server or client to figure out why the timeout is happening. Does a 120cc engine burn 120cc of fuel a minute? 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