Problem with NFS Post: 302485723

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Operating Systems AIX Problem with NFS Post 302485723 by johnf on Thursday 6th of January 2011 03:57:57 AM

01-06-2011

Registered User

Quote:

Originally Posted by lo-lp-kl

Hello everyone

I need to share a file system with two Aix boxes, the version is 5.3 tl9.

I create the nfs and I can see the files from both servers, but the problem with one of them is that I can write on the file or If I create a new one I can�t.

On the server that I create the directory I have the 777 permissions. In this one is where I have the problem.

On the server that I have the filesystem I dont have problem, I can create new files and write on them.

Thanks for your comments.

Lets clear up a few things here concerning NFS:

The directory to be remote mounted is exported from the NFS server. This is then remote mounted on the NFS client and can be mounted as RW or RO. The important thing is the syntax! The export is from the NFS server and the remote mount is on the NFS client!

If files are going to be written into the remote directory from the NFS client it must be exported as RW and the necessary permissions must be set! Generally a default 0755 will not be sufficient as this will have group and world set to read only (RO). Therefore in general the exported directory will be set to 0777. Changing the permissions on the client side will NOT affect the actual permissions on the directory!

johnf

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showmount

showmount(8)						      System Manager's Manual						      showmount(8)

NAME

       showmount - Shows remote NFS compatible mounts on a host

SYNOPSIS

       showmount [-adeT] [-t nnn] [host]

FLAGS

       Lists  all mount points in the form: hostname:dirpath. In this form, hostname is the name of a client that has remotely mounted a directory
       from an NFS server, and dirpath is the directory that has been mounted.	Lists only directories that have been remotely mounted by clients.
       Shows  host's  exports  list.  Specifies an infinite timeout.  The default timeout value is 25 seconds.	Specifies a timeout value, in sec-
       onds.  The default timeout value is 25 seconds.

       The default value for host is the current hostname.

DESCRIPTION

       The showmount command shows status information about the NFS server on host. By default, it prints the names of all  hosts  that  have  NFS
       file  systems  mounted  from  the  server  host.   See  NFS: Network File System Protocol Specification, RFC1094, Appendix A for a detailed
       description of the protocol.

NOTES

       The mountd daemon running on the server only has an idea of the actual mounts, since the NFS server is stateless. showmount will only  dis-
       play the information as accurately as the mount daemon reports it.

       The default timeout value of 25 seconds can be too brief to read and verify an export list.  If you receive timeout messages when using the
       showmount -e command, use either the -T or the -t options to increase the timeout value.

FILES

       Specifies the command path Contains a table of local file systems mounted by remote NFS clients

RELATED INFORMATION

       Commands: mount(8)

       Daemons: mountd(8)

       Files: mountdtab(4) delim off

																      showmount(8)