Section: Maintenance Commands (8)
Updated: 11 August 2011
blkmapd - pNFS block layout mapping daemon
blkmapd [-h] [-d] [-f]
daemon performs device discovery and mapping for the parallel NFS (pNFS) block layout
The pNFS block layout protocol builds a complex storage hierarchy from a set
These simple volumes are addressed by content, using a signature on the
volume to uniquely name each one.
The daemon locates a volume by examining each block device in the system for
the given signature.
The topology typically consists of a hierarchy of volumes built by striping,
slicing, and concatenating the simple volumes.
daemon uses the device-mapper driver to construct logical devices that
reflect the server topology, and passes these devices to the kernel for use
by the pNFS block layout client.
Display usage message.
Performs device discovery only then exits.
in the foreground and sends output to stderr (as opposed to syslogd)
daemon recognizes the following value from the
section of the
where to look for the rpc_pipefs filesystem. The default value is
RFC 5661 for the NFS version 4.1 specification.
RFC 5663 for the pNFS block layout specification.
Haiying Tang <Tang_Haiying@emc.com
Jim Rees <email@example.com