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pvfs2tab(5)

PVFS2
SEPTEMBER 2003

orangefs

Parallel network file system client

NAME

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 ()
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