2 .\" Copyright 2011, Jim Rees.
4 .\" You may distribute under the terms of the GNU General Public
5 .\" License as specified in the file COPYING that comes with the
6 .\" nfs-utils distribution.
8 .TH blkmapd 8 "11 August 2011"
10 blkmapd \- pNFS block layout mapping daemon
12 .B "blkmapd [-d] [-f]"
16 daemon performs device discovery and mapping for the parallel NFS (pNFS) block layout
19 The pNFS block layout protocol builds a complex storage hierarchy from a set
22 These simple volumes are addressed by content, using a signature on the
23 volume to uniquely name each one.
24 The daemon locates a volume by examining each block device in the system for
27 The topology typically consists of a hierarchy of volumes built by striping,
28 slicing, and concatenating the simple volumes.
31 daemon uses the device-mapper driver to construct logical devices that
32 reflect the server topology, and passes these devices to the kernel for use
33 by the pNFS block layout client.
37 Performs device discovery only then exits.
42 in the foreground and sends output to stderr (as opposed to syslogd)
47 RFC 5661 for the NFS version 4.1 specification.
49 RFC 5663 for the pNFS block layout specification.
52 Haiying Tang <Tang_Haiying@emc.com>
54 Jim Rees <rees@umich.edu>