ceph（luminous）-Bluestore，ceph-objectstoe-tool工具

前言

本文主要介绍了一些ceph-objectstrore-tool的常用操作，主要从pg操作层面，osdmap操作层面和对象操作层面介绍的.
下面是help说明.

Allowed options:
  --help                      produce help message
  --type arg                  Arg is one of [bluestore, filestore (default),
                              memstore]
  --data-path arg             path to object store, mandatory
  --journal-path arg          path to journal, use if tool can't find it
  --pgid arg                  PG id, mandatory for info, log, remove, export,
                              export-remove, rm-past-intervals, mark-complete,
                              trim-pg-log, and mandatory for
                              apply-layout-settings if --pool is not specified
  --pool arg                  Pool name, mandatory for apply-layout-settings if
                              --pgid is not specified
  --op arg                    Arg is one of [info, log, remove, mkfs, fsck,
                              repair, fuse, dup, export, export-remove, import,
                              list, fix-lost, list-pgs, rm-past-intervals,
                              dump-journal, dump-super, meta-list, get-osdmap,
                              set-osdmap, get-inc-osdmap, set-inc-osdmap,
                              mark-complete, apply-layout-settings,
                              update-mon-db, dump-import, trim-pg-log]
  --epoch arg                 epoch# for get-osdmap and get-inc-osdmap, the
                              current epoch in use if not specified
  --file arg                  path of file to export, export-remove, import,
                              get-osdmap, set-osdmap, get-inc-osdmap or
                              set-inc-osdmap
  --mon-store-path arg        path of monstore to update-mon-db
  --fsid arg                  fsid for new store created by mkfs
  --target-data-path arg      path of target object store (for --op dup)
  --mountpoint arg            fuse mountpoint
  --format arg (=json-pretty) Output format which may be json, json-pretty,
                              xml, xml-pretty
  --debug                     Enable diagnostic output to stderr
    --force                     Ignore some types of errors and proceed with
                              operation - USE WITH CAUTION: CORRUPTION POSSIBLE
                              NOW OR IN THE FUTURE
  --skip-journal-replay       Disable journal replay
  --skip-mount-omap           Disable mounting of omap
  --head                      Find head/snapdir when searching for objects by
                              name
  --dry-run                   Don't modify the objectstore
  --namespace arg             Specify namespace when searching for objects


Positional syntax:

ceph-objectstore-tool ...