What is stale NFS file handle in Linux?

The stale NFS handle indicates that the client has a file open, but the server no longer recognizes the file handle. In some cases, NFS will cleanup its data structures after a timeout. In other cases, you will need to clean the NFS data structures yourself and restart NFS afterwards.

What is NFS stale Error in Linux?

Error: ” mount.nfs: Stale file handle ” This NFS Stale File Handle error occurs due to following reasons: A file handle becomes stale when the file or directory referenced by the handle is removed by another host/server, while our client still holds an active reference to the object file/directory.

Where is stale NFS file handle?

Stale files are usually found using ls -ltR /<mounted directory path> | grep “?” , but this usually takes some time (since it goes over all files in a given path). To further clarify, the issue seen in specific files such as Java library file(s) rather than the whole mount.

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How do you fix a stale handle?

Stale file handles are refreshed when the process reopens the file. Doing so updates the file description with the file’s new inode number if it exists. In most cases, the process must do this internally. Otherwise, we may have to restart it.

How do I reset my NFS mount?

1 Answer

  1. You need to use the options soft , bg , and probably timeo like so: sudo mount -t nfs -o soft,bg,timeo=30 IP:/share /mountpoint. Please see man nfs for information and usage.
  2. When the connection to the NFS share is interrupted, refresh the mount-point with umount -f like so: sudo umount -f /mountpoint.

What is NFS stale file handle?

The stale NFS handle indicates that the client has a file open, but the server no longer recognizes the file handle. In some cases, NFS will cleanup its data structures after a timeout. In other cases, you will need to clean the NFS data structures yourself and restart NFS afterwards.

What causes NFS stale file handle?

A filehandle becomes stale whenever the file or directory referenced by the handle is removed by another host, while your client still holds an active reference to the object. … So this can occur if the directory is modified on the NFS server, but the directories modification time is not updated.

What is Fsid in NFS?

fsid=num|root|uuid. NFS needs to be able to identify each filesystem that it exports. Normally it will use a UUID for the filesystem (if the filesystem has such a thing) or the device number of the device holding the filesystem (if the filesystem is stored on the device).

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What is Exportfs in Linux?

Description. The exportfs command makes local directories available for Network File System (NFS) clients to mount. This command is normally invoked during system startup by the /etc/rc. nfsfile and uses information in the /etc/exports file to export one or more directories, which must be specified with full path names …

How do you check if NFS mount is working?

To verify that NFS is running on each computer:

  1. AIX® operating systems: Type the following command on each computer: lssrc -g nfs The Status field for NFS processes should indicate active . …
  2. Linux® operating systems: Type the following command on each computer: showmount -e hostname.

What is a file handle in Linux?

A file descriptor (Unix, Linux) or a file handle (Windows) is the connection id (generally to a file) from the Operating system in order to perform IO operations (Input/Ouput of Bytes). … You can also see a file descriptor as an object that a process uses to: read or write to an open file. open network sockets.

What is NFS protocol in networking?

NFS is an Internet Standard, client/server protocol developed in 1984 by Sun Microsystems to support shared, originally stateless, (file) data access to LAN-attached network storage. As such, NFS enables a client to view, store, and update files on a remote computer as if they were locally stored.

How check NFS mount Linux?

Show NFS shares on NFS Server

  1. Use showmount to show NFS shares. …
  2. Use exportfs to show NFS shares. …
  3. Use master export file /var/lib/nfs/etab to show NFS shares. …
  4. Use mount to list NFS mount points. …
  5. Use nfsstat to list NFS mount points. …
  6. Use /proc/mounts to list NFS mount points.
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How restart NFS service in Linux?

Redhat / RHEL / CentOS Linux: Start / Stop / Restart NFS Service…

  1. Start / Stop / Restart portmap Service under RHEL. Type the following commands: …
  2. Start / Stop / Restart NFS Service under RHEL / CentOS Linux. Type the following commands: …
  3. Automatically Start the NFS Server.

How restart Rpcbind service in Linux?

Just complete a warm start by following these steps.

  1. Become superuser or assume an equivalent role. Roles contain authorizations and privileged commands. …
  2. Determine the PID for rpcbind . Run ps to get the PID, which is the value in the second column. …
  3. Send a SIGTERM signal to the rpcbind process. …
  4. Restart rpcbind .

How do I start NFS Client Services in Linux?

Configuring NFS server

  1. Install the required nfs packages if not already installed on the server : # rpm -qa | grep nfs-utils. …
  2. Enable the services at boot time: …
  3. Start the NFS services: …
  4. Check the status of NFS service: …
  5. Create a shared directory: …
  6. Export the directory. …
  7. Exporting the share : …
  8. Restart the NFS service: