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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 06:03:02 +0000 |
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| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 06:03:02 +0000 |
| commit | 4897093455a2bf08f3db3a1132cc2f6f5484d77c (patch) | |
| tree | 9e6373544263f003139431fb4b08f9766e1ed530 /utils/blkmapd/blkmapd.man | |
| parent | Initial commit. (diff) | |
| download | nfs-utils-upstream.tar.xz nfs-utils-upstream.zip | |
Adding upstream version 1:2.6.4.upstream/1%2.6.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'utils/blkmapd/blkmapd.man')
| -rw-r--r-- | utils/blkmapd/blkmapd.man | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/utils/blkmapd/blkmapd.man b/utils/blkmapd/blkmapd.man new file mode 100644 index 0000000..4b3d3f0 --- /dev/null +++ b/utils/blkmapd/blkmapd.man @@ -0,0 +1,72 @@ +.\" +.\" Copyright 2011, Jim Rees. +.\" +.\" You may distribute under the terms of the GNU General Public +.\" License as specified in the file COPYING that comes with the +.\" nfs-utils distribution. +.\" +.TH blkmapd 8 "11 August 2011" +.SH NAME +blkmapd \- pNFS block layout mapping daemon +.SH SYNOPSIS +.B "blkmapd [-h] [-d] [-f]" +.SH DESCRIPTION +The +.B blkmapd +daemon performs device discovery and mapping for the parallel NFS (pNFS) block layout +client [RFC5663]. +.PP +The pNFS block layout protocol builds a complex storage hierarchy from a set +of +.I 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. +.PP +The topology typically consists of a hierarchy of volumes built by striping, +slicing, and concatenating the simple volumes. +The +.B 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. +.SH OPTIONS +.TP +.B -h +Display usage message. +.TP +.B -d +Performs device discovery only then exits. +.TP +.B -f +Runs +.B blkmapd +in the foreground and sends output to stderr (as opposed to syslogd) +.SH CONFIGURATION FILE +The +.B blkmapd +daemon recognizes the following value from the +.B [general] +section of the +.I /etc/nfs.conf +configuration file: +.TP +.B pipefs-directory +Tells +.B blkmapd +where to look for the rpc_pipefs filesystem. The default value is +.IR /var/lib/nfs/rpc_pipefs . +.SH SEE ALSO +.BR nfs (5), +.BR dmsetup (8), +.BR nfs.conf (5) +.sp +RFC 5661 for the NFS version 4.1 specification. +.br +RFC 5663 for the pNFS block layout specification. +.SH AUTHORS +.br +Haiying Tang <Tang_Haiying@emc.com> +.br +Jim Rees <rees@umich.edu> |