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diff --git a/src/ceph/doc/man/8/osdmaptool.rst b/src/ceph/doc/man/8/osdmaptool.rst deleted file mode 100644 index f58d29c..0000000 --- a/src/ceph/doc/man/8/osdmaptool.rst +++ /dev/null @@ -1,157 +0,0 @@ -:orphan: - -====================================================== - osdmaptool -- ceph osd cluster map manipulation tool -====================================================== - -.. program:: osdmaptool - -Synopsis -======== - -| **osdmaptool** *mapfilename* [--print] [--createsimple *numosd* - [--pgbits *bitsperosd* ] ] [--clobber] - - -Description -=========== - -**osdmaptool** is a utility that lets you create, view, and manipulate -OSD cluster maps from the Ceph distributed storage system. Notably, it -lets you extract the embedded CRUSH map or import a new CRUSH map. - - -Options -======= - -.. option:: --print - - will simply make the tool print a plaintext dump of the map, after - any modifications are made. - -.. option:: --clobber - - will allow osdmaptool to overwrite mapfilename if changes are made. - -.. option:: --import-crush mapfile - - will load the CRUSH map from mapfile and embed it in the OSD map. - -.. option:: --export-crush mapfile - - will extract the CRUSH map from the OSD map and write it to - mapfile. - -.. option:: --createsimple numosd [--pgbits bitsperosd] - - will create a relatively generic OSD map with the numosd devices. - If --pgbits is specified, the initial placement group counts will - be set with bitsperosd bits per OSD. That is, the pg_num map - attribute will be set to numosd shifted by bitsperosd. - -.. option:: --test-map-pgs [--pool poolid] - - will print out the mappings from placement groups to OSDs. - -.. option:: --test-map-pgs-dump [--pool poolid] - - will print out the summary of all placement groups and the mappings - from them to the mapped OSDs. - - -Example -======= - -To create a simple map with 16 devices:: - - osdmaptool --createsimple 16 osdmap --clobber - -To view the result:: - - osdmaptool --print osdmap - -To view the mappings of placement groups for pool 0:: - - osdmaptool --test-map-pgs-dump rbd --pool 0 - - pool 0 pg_num 8 - 0.0 [0,2,1] 0 - 0.1 [2,0,1] 2 - 0.2 [0,1,2] 0 - 0.3 [2,0,1] 2 - 0.4 [0,2,1] 0 - 0.5 [0,2,1] 0 - 0.6 [0,1,2] 0 - 0.7 [1,0,2] 1 - #osd count first primary c wt wt - osd.0 8 5 5 1 1 - osd.1 8 1 1 1 1 - osd.2 8 2 2 1 1 - in 3 - avg 8 stddev 0 (0x) (expected 2.3094 0.288675x)) - min osd.0 8 - max osd.0 8 - size 0 0 - size 1 0 - size 2 0 - size 3 8 - -In which, - #. pool 0 has 8 placement groups. And two tables follow: - #. A table for placement groups. Each row presents a placement group. With columns of: - - * placement group id, - * acting set, and - * primary OSD. - #. A table for all OSDs. Each row presents an OSD. With columns of: - - * count of placement groups being mapped to this OSD, - * count of placement groups where this OSD is the first one in their acting sets, - * count of placement groups where this OSD is the primary of them, - * the CRUSH weight of this OSD, and - * the weight of this OSD. - #. Looking at the number of placement groups held by 3 OSDs. We have - - * avarge, stddev, stddev/average, expected stddev, expected stddev / average - * min and max - #. The number of placement groups mapping to n OSDs. In this case, all 8 placement - groups are mapping to 3 different OSDs. - -In a less-balanced cluster, we could have following output for the statistics of -placement group distribution, whose standard deviation is 1.41421:: - - #osd count first primary c wt wt - osd.0 8 5 5 1 1 - osd.1 8 1 1 1 1 - osd.2 8 2 2 1 1 - - #osd count first primary c wt wt - osd.0 33 9 9 0.0145874 1 - osd.1 34 14 14 0.0145874 1 - osd.2 31 7 7 0.0145874 1 - osd.3 31 13 13 0.0145874 1 - osd.4 30 14 14 0.0145874 1 - osd.5 33 7 7 0.0145874 1 - in 6 - avg 32 stddev 1.41421 (0.0441942x) (expected 5.16398 0.161374x)) - min osd.4 30 - max osd.1 34 - size 00 - size 10 - size 20 - size 364 - - -Availability -============ - -**osdmaptool** is part of Ceph, a massively scalable, open-source, distributed storage system. Please -refer to the Ceph documentation at http://ceph.com/docs for more -information. - - -See also -======== - -:doc:`ceph <ceph>`\(8), -:doc:`crushtool <crushtool>`\(8), |