Projects / ClusterNFS


ClusterNFS is a set of patches for the "Universal NFS Daemon" (UNFSD) to allow multiple clients to nfs mount the same root filesystem by providing "tagged" filenames. When a client requests the file "/path/filename", the ClusterNFS server checks for the existence of files of the form "/path/filename$$TAG=value$$". If such a file exists and the client has a matching value for KEY, this file is returned. If the client does not have a matching value or no such file exists, the file request proceeds as normal. Currently supported keys include HOST (hostname), IP (IP number), CLIENT (matches any nfs client) and CREATE (for "tagged" creation of files).

Operating Systems

Recent releases

  •  26 Nov 2001 15:23

    Release Notes: A HOST tag was added. Some bugs in matching IP=a.b.c.d_nn tags were fixed. Startup scripts for SuSE and RedHat distributions were added. readdir() was rewritten to use the same filename matching function as other syscalls.

    •  19 Nov 2001 14:08

      Release Notes: Redesigned and rewritten filename matching, support for $$CREATE=..$$ tag, support for $$IP=a.b.c.d/nn$$ subnet matching tag, and a patch for ReiserFS.

      •  28 Sep 2001 21:42

        Release Notes: Filename translation support for mount commands in addition to file and directory operations, and compile support for gcc > 2.95.2.

        •  16 Feb 2001 11:44

          Release Notes: This release includes extended filename matching on all file operations, hiding of inaccessible/shadowed files so clients can only see files they can access, and a fix for a memory leak.

          •  13 May 2000 10:46

            Release Notes: Initial Announcement.


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