{"id":3336,"date":"2022-12-20T17:02:22","date_gmt":"2022-12-20T20:02:22","guid":{"rendered":"http:\/\/lode.uno\/linux-man\/index.php\/2022\/12\/20\/blkmapd-man8\/"},"modified":"2022-12-20T17:02:22","modified_gmt":"2022-12-20T20:02:22","slug":"blkmapd-man8","status":"publish","type":"post","link":"https:\/\/lode.uno\/linux-man\/2022\/12\/20\/blkmapd-man8\/","title":{"rendered":"blkmapd (man8)"},"content":{"rendered":"

blkmapd<\/h1>\n

NAME<\/a>
SYNOPSIS<\/a>
DESCRIPTION<\/a>
OPTIONS<\/a>
CONFIGURATION FILE<\/a>
SEE ALSO<\/a>
AUTHORS<\/a> <\/p>\n

\n

NAME <\/a> <\/h2>\n

blkmapd \u2212 pNFS block layout mapping daemon<\/p>\n

SYNOPSIS <\/a> <\/h2>\n

blkmapd [-h] [-d] [-f]<\/b><\/p>\n

DESCRIPTION <\/a> <\/h2>\n

The blkmapd<\/b> daemon performs device discovery and mapping for the parallel NFS (pNFS) block layout client [RFC5663].<\/p>\n

The pNFS block layout protocol builds a complex storage hierarchy from a set of simple volumes.<\/i> 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.<\/p>\n

The topology typically consists of a hierarchy of volumes built by striping, slicing, and concatenating the simple volumes. The blkmapd<\/b> 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.<\/p>\n

OPTIONS <\/a> <\/h2>\n\n\n\n\n
<\/td>\n\n

-h<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Display usage message.<\/p>\n<\/td>\n<\/tr>\n

<\/td>\n\n

-d<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Performs device discovery only then exits.<\/p>\n<\/td>\n<\/tr>\n

<\/td>\n\n

-f<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Runs blkmapd<\/b> in the foreground and sends output to stderr (as opposed to syslogd)<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

CONFIGURATION FILE <\/a> <\/h2>\n

The blkmapd<\/b> daemon recognizes the following value from the [general]<\/b> section of the \/etc\/nfs.conf<\/i> configuration file:
pipefs-directory<\/b><\/p>\n

Tells blkmapd<\/b> where to look for the rpc_pipefs filesystem. The default value is \/var\/lib\/nfs\/rpc_pipefs<\/i>.<\/p>\n

SEE ALSO <\/a> <\/h2>\n

nfs<\/b>(5), dmsetup<\/b>(8), nfs.conf<\/b>(5)<\/p>\n

RFC 5661 for the NFS version 4.1 specification.
RFC 5663 for the pNFS block layout specification.<\/p>\n

AUTHORS <\/a> <\/h2>\n

Haiying Tang
Jim Rees <\/p>\n

\n","protected":false},"excerpt":{"rendered":"

blkmapd \u2212 pNFS block layout mapping daemon <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[5,52,464,4],"class_list":["post-3336","post","type-post","status-publish","format-standard","hentry","category-8-administracion-del-sistema","tag-5","tag-administracion","tag-blkmapd","tag-man8"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=3336"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3336\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=3336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=3336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=3336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}