You asked: What is the difference between hard Mount & soft mount in NFS?

4 Answers. A hard mount is generally used for block resources like a local disk or SAN. A soft mount is usually used for network file protocols like NFS or CIFS. The advantage of a soft mount is that if your NFS server is unavailable, the kernel will time out the I/O operation after a pre-configured period of time.

What is soft mount NFS?

Soft Mount:



When NFS file system is mounted using soft option, the NFS client daemons tries to retrieve data from the NFS Server and in case do not get any response due to crash/failure of NFS Server, it will straight away throw an error to the client machine.

What are the mount options for NFS?

Common NFS mount options in Linux

  • rw (read/write) / ro (read-only) – Use rw for data that users need to modify. …
  • suid / nosuid. …
  • hard / soft. …
  • intr / nointr. …
  • fg (foreground) / bg (background) …
  • devs / nodevs. …
  • timeo=n. …
  • retrans=n.

What is soft and hard mount?

A hard mount is generally used for block resources like a local disk or SAN. A soft mount is usually used for network file protocols like NFS or CIFS. The advantage of a soft mount is that if your NFS server is unavailable, the kernel will time out the I/O operation after a pre-configured period of time.

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What is Nolock in NFS?

The nolock option prevents the exchange of file lock information between the NFS server and this NFS client. … Using the nolock option is required if the NFS server has its NFS file lock functionality in a broken or unimplemented state, but it works between any versions of NFS.

What does it mean to mount a horse?

(tr) to provide with a horse for riding, or to place on a horse. (of male animals) to climb onto (a female animal) for copulation.

How do I mount an NFS file system?

How to Mount an NFS File System ( mount Command)

  1. Become superuser or assume an equivalent role.
  2. Create a mount point for the file system to be mounted, if necessary. # mkdir /mount-point. …
  3. Make sure the resource (file or directory) is available from a server. …
  4. Mount the NFS file system.

How does NFS Authentication work?

Secure NFS System



When using UNIX authentication, an NFS server authenticates a file request by authenticating the computer making the request, but not the user. Therefore, a client user can run su and impersonate the owner of a file.

How can I improve my NFS performance?

Start plenty of NFS daemon threads.

  1. If read dominates, add RAM on the clients to cache more of the file systems and reduce read operations.
  2. If write dominates, make sure the clients are using noatime,nodiratime to avoid updating access times. …
  3. If getattr dominates, tune the attribute caches.
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