демон отображения макета блока pNFS (pNFS block layout mapping daemon)
Имя (Name)
blkmapd - pNFS block layout mapping daemon
Синопсис (Synopsis)
blkmapd [-h] [-d] [-f]
Описание (Description)
The blkmapd daemon performs device discovery and mapping for the
parallel NFS (pNFS) block layout client [RFC5663].
The pNFS block layout protocol builds a complex storage hierarchy
from a set of simple volumes. 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. The
blkmapd 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.
Параметры (Options)
-h Display usage message.
-d Performs device discovery only then exits.
-f Runs blkmapd in the foreground and sends output to stderr
(as opposed to syslogd)
Конфигурационный файл (Config file)
The blkmapd daemon recognizes the following value from the
[general] section of the /etc/nfs.conf configuration file:
pipefs-directory
Tells blkmapd where to look for the rpc_pipefs filesystem.
The default value is /var/lib/nfs/rpc_pipefs.
Смотри также (See also)
nfs(5), dmsetup(8), nfs.conf(5)
RFC 5661 for the NFS version 4.1 specification.
RFC 5663 for the pNFS block layout specification.
