Wednesday, May 6, 2009

AIX - NFS - Remove Imported File System

AIX - NFS - Remove Imported File System

Using smitty rmnfsmnt command we can remove the mounted file system from client end.
#smitty rmnfsmnt

Then one smitty screen will appear. Specify the mounted file system name or press Esc+4 keys, for system analyze and show the mount file system, then you mention from the list also. After this command execution, which mounted file system will be removed from the client PC. Now you put mount command, that removed file system is not listed.

Like this we can export and import the network file system.

AIX - NFS - List Imported Files System

AIX - NFS - List Imported Files System

Using mount command we can check the imported file system status.

#mount

Above command is used to display the mounted file system information along with file system type, if nfs mounted file system available then it will show file system type name nfs so easily we can identify which nfs mounted file system.

AIX - NFS - Import File Systems

AIX - NFS - Import File Systems

Using smitty mknfsmnt command we can import the file system.

#smitty mknfsmnt

One smitty configuration screen will appear then you have to specify the following things.

a. specify the path name of mount point (client end mount point by default /mnt will be available or we have to create directory and we can specify that directory name to mount the file system /mnt)

b. Specify the path name of remote directory (This is server file system name i.e. /usr, which file system was exported by server)

c. Host where remote directory resides (This is exporting source server name i.e. ServerA)

d. Mount type name (Specify the file system type jfs2)

e. Then press enter button to execute the above configuration, finally it will exported.

AIX - NFS - Changing Exported File System Permissions

AIX - NFS - Changing Exported File System Permissions

Using chnfsexp command we can change the permission for exported file systems

#smitty chnfsexp

One smitty screen will appear, and then you specify the permission and configure the file system.

Tuesday, May 5, 2009

AIX - NFS - Remove Exported File System

AIX - NFS - Remove Exported File System

Using smitty rmnfsexp command we can remove the exported file system

#smitty rmnfsexp

One smitty screen will appear, and then you press Esc+4, it will check and shows what are the file systems are exported. Then you can remove the exported file system.

After this command execution, list the exported file system using command lsnfsexp, now removed file systems is not listed.

NOTE: while removing the file system, the file system entry removed from /etc/exports and /etc/xtab

AIX - NFS - List Exported File System

AIX - NFS - List Exported File System

Using lsnfsexp command we can list the exported file system

#lsnfsexp

/usr – rw

AIX - NFS - Export file system

AIX - NFS - Export file system

Using smitty mknfsexp command we can export the file system

#smitty mknfsexp

One window will appear then you have to put the configuration

a. File system name (what file system you want to export i.e. /usr)

b. Specify the target host name (destination host name i.e. serverB)
If this box is empty, then this exporting file system is allowed to all the clients.

c. Specify the access permissions (Read only, Read write)

d. Host allowed root access (Source Server name, ServerA)

e. Then press enter button to execute the above configuration finally result will be OK, if you got OK output then your configurations are exported properly. If you got FAILED error message then you have to check the configuration.

NOTE: After exporting the file system, that exported file system will be added in /etc/exports, and /etc/xtab because while boot process, server is checking exported file systems from above files, if entry found in the above file then file system are exporting on boot process.

AIX - NFS - Client End

AIX - NFS - Client End

Then we should import the file system to client end.

5. Import
6. List the imported file systems
7. Remove the imported file systems

AIX - NFS - Server End Activities

AIX - NFS - Server End Activities

Server End

First we should export the file system from server end.

1. Export
2. List the exported file systems
3. Remove the exported file systems
4. Change the exported file system permissions

AIX - NFS (Network File System)

AIX - NFS (Network File System)

In this NFS we can share the file systems from server to clients, across the network, using some nfs related commands we can configure the NFS in server end and client end. So clients can access the server mounted files systems through network, with specified permissions, such as read only, read write.

NOTE:
Before configuring the NFS, U should check the /etc/hosts file entry, and NFS daemons and all the nfs daemon subsystems.

--- nfsd, rpc.mountd subsystems is running on server end.

--- rpc.statd, rpc.lockd, rpc.mountd subsystems running on client end.