What is NFS stale Error in Linux?

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. …

How do I fix stale NFS file handle error?

Try restarting NFS first on the server and then on the clients. This may clear the file handles. Rebooting NFS servers with files opened from other servers is not recommended. This is especially problematic if the open file has been deleted on the server.

How fix NFS problem Linux?

Make sure that you have told NFS to register any changes you made to /etc/exports since starting nfsd by running the exportfs command. Be sure to type exportfs -ra to be extra certain that the exports are being re-read. Check the file /proc/fs/nfs/exports and make sure the volume and client are listed correctly.

How do I know if my mount is NFS stale?

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 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?

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. …

What is an NFS file handle?

These are the file system in which the file resides and its identifier (FID) within that file system. … The FID values, which are generated by PFSs that own the data, are unique within a file system, persistent, and never reused.

How do I debug NFS problems?

Enable debugging – Examples

  1. Enable all NFS (client-side) debugging. To enable NFS debugging on the client : # rpcdebug -m nfs -s all.
  2. Enable NFSD (server-side) lockd debugging. To enable server side nfsd lockd debugging: # rpcdebug -m nfsd -s lockd.
  3. Enable RPC Call debugging.

Which is better SMB or NFS?

NFS offers better performance and is unbeatable if the files are medium-sized or small. For larger files, the timings of both methods are almost the same. In the case of sequential read, the performance of NFS and SMB are almost the same when using plain text. However, with encryption, NFS is better than SMB.

How do I troubleshoot NFS mount issue?

Troubleshooting NFS Mount Issues in Linux

  1. Install the required nfs packages if not already installed on the server # rpm -qa | grep nfs-utils. # yum install nfs-util.
  2. Use the mount command to mount exported file systems. …
  3. Update /etc/fstab to mount NFS shares at boot time.
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What is stale file Linux?

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.

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 mount NFS share Linux?

Use the following procedure to automatically mount an NFS share on Linux systems:

  1. Set up a mount point for the remote NFS share: sudo mkdir /var/backups.
  2. Open the /etc/fstab file with your text editor : sudo nano /etc/fstab. …
  3. Run the mount command in one of the following forms to mount the NFS share:

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 do I start NFS client on 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:
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How do I know if NFS is working Linux?

Verifying that NFS is running (Linux and UNIX)

  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.