What is ETC exports D?

What is ETC exports D?

Extra Export Tables After reading /etc/exports exportfs reads files in the /etc/exports.d directory as extra export tables. Only files ending in .exports are considered. Files beginning with a dot are ignored. The format for extra export tables is the same as /etc/exports.

How do I export a directory in NFS Linux?

Exporting an NFS file system

  1. Verify that NFS is already running by typing the command lssrc -g nfs .
  2. At a command line, type the following and press Enter:
  3. Specify appropriate values in the PATHNAME of directory to export, MODE to export directory, and EXPORT directory now, system restart or both fields.

What is etc exports file in Linux?

The /etc/exports file controls which file systems are exported to remote hosts and specifies options. Blank lines are ignored, comments can be made by starting a line with the hash mark (#), and long lines can be wrapped with a backslash (\).

What is Fsid in NFS?

For NFSv4, there is a distinguished filesystem which is the root of all exported filesystem. This is specified with fsid=root or fsid=0 both of which mean exactly the same thing. Other filesystems can be identified with a small integer, or a UUID which should contain 32 hex digits and arbitrary punctuation.

What ports are needed for NFS?

Network File System (NFS) is used by UNIX clients for file access. NFS uses port 2049. NFSv3 and NFSv2 use the portmapper service on TCP or UDP port 111.

What is All_squash in NFS?

On the Linux NFS server (not Data ONTAP), the all_squash option makes the server disregard the incoming NFS User Identifier/ Group Identifier (UID/ GID) and allows the server to be set in the exports instead.

How do I view NFS exports?

NFS clients can use the showmount -e command to see a list of exports available from an ONTAP NFS server. This can help users identify the file system they want to mount. Beginning with ONTAP 9.4, ONTAP allows NFS clients to view the export list by default.

What is the difference between NFS and SMB?

NFS is used for server to server file sharing and is mostly a server-client file-sharing protocol. SMB is used for the transfer of files from the places the user needs and is mostly a user client file-sharing protocol. NFS requires AppleDouble files to share Apple extended documents.

How do I change etc exports?

To change an exported NFS file system by using a text editor:

  1. To unexport the file system, type: exportfs -u /dirname.
  2. Open the /etc/exports file with your favorite text editor.
  3. Make whatever changes you want.
  4. Save and close the /etc/exports file.
  5. Reexport the file system by entering: exportfs /dirname.

What is Fsid in Linux?

i think this comments shows us such an info : “fsid” corresponds to a permanent “Major + Minor”, which are usually used for identifying a block-device. but once failover, the Major/Minor of the device may be changed. so “fsid” was put forward.

How do I check NFS exports?

Run the showmount command with the server name to check which NFS exports are available. In this example, localhost is the server name. The output shows the available exports and the IP which they are available from.


All versions of NFS can use Transmission Control Protocol (TCP) running over an IP network, with NFSv4 requiring it. NFSv2 and NFSv3 can use the User Datagram Protocol (UDP) running over an IP network to provide a stateless network connection between the client and server.

What is NFS and SMB?

NFS (Network File System) and CIFS (Common Internet File System) are protocols designed to allow a client system to view and access files stored on a remote computing device, such as a server or a PC. CIFS is a dialect of the Server Message Block (SMB) protocol that is used by most current storage systems.

What are NFS exports?

NFS is the most common protocol for sharing files between Unix systems over a network. NFS servers export directories from their local hard disks to NFS clients, which mount them so that they can be accessed like any other directory.

What is an NFS export?

How do I view NFS share on Linux?

Important commands for NFS

  1. showmount -e : Shows the available shares on your local machine.
  2. showmount -e <server-ip or hostname>: Lists the available shares at the remote server.
  3. showmount -d : Lists all the sub directories.
  4. exportfs -v : Displays a list of shares files and options on a server.

Should I use NFS or Samba?

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.

Does Linux use SMB or NFS?

The Common Internet File System (CIFS) protocol is a dialect of SMB which in turn is a collection of message packages that defines a specific version of SMB. The Network File System (NFS) protocol is used by Linux systems to share files and folders.

How do I edit etc exports in Linux?

What are different options used in etc exports file?

There are many different NFS sharing options, including these:

  • rw: Share as read-write.
  • ro: Share as read-only.
  • sync: File data changes are made to disk immediately, which has an impact on performance, but is less likely to result in data loss.
  • async: The opposite of sync; file data changes are made initially to memory.

Where are NFS exports defined?

The primary configuration for the NFS server is the /etc/exports file. This is the file that you use to specify what directories you want to share with the NFS clients.

What is NFS export?

Do I need port 111 for NFS?

Portmapper service is required to run NFS both on the client and the server-side. It runs on Port 111 for both TCP and UDP protocols.

What OSI layer is NFS?

NFS Procedures and Operations: The actual functionality of NFS is implemented in the form of procedures and operations that conceptually function at layer seven of the OSI model.

Should I use SMB or NFS?

In random read, NFS and SMB fare equally with plain text. However, NFS is better with encryption. In the case of random writing, NFS is better than SMB in both plain text and encryption. If you use rsync for file transfer, NFS is a better choice in plain text and encryption.

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