NFS Mount Configuration File (Vers 2)

Hello,

This is an updated version of the mount configuration patches I sent out a few months ago... The main difference in these patches is this functionality is only enabled by a configuration flag (see patch 4/8 for details).

I have been convinced that its probably best to leave it up to the individual users or distros to decide if they want a system-wide mount configuration file and where the file should live.

The following patch set introduces a configuration file where mount options can be define. The options in the file can be applied globally or per server or per mount point.

The patch set reuses the configuration parsing code that idmapd uses. I did added a couple enhancements like ignoring blanks in certain definitions as well as at the beginning of assignment statements.

There are man pages include in the patch set but in a nut shell, the configuration file has three basic types of sections. A global section, server section and mount point section. There can only be one global section and multiple server and mount point sections.

The mount command prioritize these sections in the following way:
* Options on the command line are always used.

* Options defined in the mount point section are used as long a the options are not in the command line options.

* Options defined in the server section are used as long as they are not defined on the command line or in the mount point section.

* Options defined in the global section are used as long as the options are not on the command line or in the mount point section or in the server section.

This is the first step toward moving the default NFS version from 3 to 4 on the client. Having a configuration file which allows users to define the maximum and minimum NFS versions that should be negotiated is the right thing to do... IMHO.. Even though this patch does not does not do that, it does lay the ground work for that type of functionality.

The entire patch set is available at:
http://people.redhat.com/steved/mount-conf/ver02/

and on the 'mount_conf-ver02' branch on my experimental git tree:
git://linux-nfs.org/~steved/nfs-utils-exp.git

Comments?

steved.
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