pvfs2tab man page

pvfs2tab — information about pvfs2 volumes

Description

Any program that uses PVFS2 will consult a pvfs2tab file for information about how to convert a path name into information like which servers to contact and what files to request.

Programs will look for a pvfs2tab file in several places

/etc/pvfs2tab

The default location of the file

pvfs2tab

If there is no /etc/pvfs2tab file, then a program will look in the current directory for a file called pvfs2tab

PVFS2TAB_FILE environment variable

This environment variable overrides any system-wide or local files.  Programs will look for a file located at the value of the environment variable.

Format

The file format is similar but not identical to fstab (5), and looks like "<bmi_address>/<fs_name> <mountpoint> pvfs2 <options> 0 0"  .

bmi address

Takes the form <protocol>://<hostspec> <protocol> is the name of the communications protocol used by bmi ("gm", "tcp", "ib"). <hostspec> is the name of any metadata server.  This format is method-dependent.  For example, a <hostspec> for the "tcp" method would look like "foo.bar.com:2344". Other methods may express hosts in different ways.

<fs_name>

is the name of a PVFS file system on that server.

<mountpoint>

is the virtual mountpoint used by pvfs2 clients.

<options>

will generally be "default" for a standard set of options.  Two other options are currently available.  The option "flowproto=<flow_method>" can be used to specify an alternate flow protocol method.  The option "encoding=<encoding>" can be used to select a per-file system wire encoding mechanism, one of "direct", "le_bfield", or "xdr".

Bugs

Please report all bugs to the pvfs2 bugzilla (http://bugzilla.mcs.anl.gov/pvfs/)

Author

The PVFS2 development team (pvfs2-developers@beowulf-underground.org)

See Also

pvfs2-server(1), pvfs2-statfs(1) pvfs2-ping(1) pvfs2-cp(1) pvfs2-genconfig(1)

Referenced By

pvfs2(1), pvfs2-ping(1).

SEPTEMBER 2003 PVFS2 Manuals