1CEPH-KVSTORE-TOOL(8)                 Ceph                 CEPH-KVSTORE-TOOL(8)
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NAME

6       ceph-kvstore-tool - ceph kvstore manipulation tool
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SYNOPSIS

9       ceph-kvstore-tool <leveldb|rocksdb|bluestore-kv> <store path> command [args...]
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DESCRIPTION

13       ceph-kvstore-tool  is  a  kvstore manipulation tool. It allows users to
14       manipulate leveldb/rocksdb's data (like OSD's omap) offline.
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COMMANDS

17       ceph-kvstore-tool utility uses  many  commands  for  debugging  purpose
18       which are as follows:
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20       list [prefix]
21              Print key of all KV pairs stored with the URL encoded prefix.
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23       list-crc [prefix]
24              Print CRC of all KV pairs stored with the URL encoded prefix.
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26       dump [prefix]
27              Print  key and value of all KV pairs stored with the URL encoded
28              prefix.
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30       exists <prefix> [key]
31              Check if there is any KV pair stored with the URL  encoded  pre‐
32              fix. If key is also specified, check for the key with the prefix
33              instead.
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35       get <prefix> <key> [out <file>]
36              Get the value of the KV pair stored with the URL encoded  prefix
37              and  key.   If  file  is  also specified, write the value to the
38              file.
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40       crc <prefix> <key>
41              Get the CRC of the KV pair stored with the  URL  encoded  prefix
42              and key.
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44       get-size [<prefix> <key>]
45              Get  estimated  store  size or size of value specified by prefix
46              and key.
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48       set <prefix> <key> [ver <N>|in <file>]
49              Set the value of the KV pair stored with the URL encoded  prefix
50              and key.  The value could be version_t or text.
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52       rm <prefix> <key>
53              Remove the KV pair stored with the URL encoded prefix and key.
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55       rm-prefix <prefix>
56              Remove all KV pairs stored with the URL encoded prefix.
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58       store-copy <path> [num-keys-per-tx]
59              Copy  all  KV  pairs  to  another  directory  specified by path.
60              [num-keys-per-tx] is the number of KV pairs copied for a  trans‐
61              action.
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63       store-crc <path>
64              Store CRC of all KV pairs to a file specified by path.
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66       compact
67              Subcommand  compact  is  used to compact all data of kvstore. It
68              will open the database, and  trigger  a  database's  compaction.
69              After compaction, some disk space may be released.
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71       compact-prefix <prefix>
72              Compact all entries specified by the URL encoded prefix.
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74       compact-range <prefix> <start> <end>
75              Compact  some  entries  specified  by the URL encoded prefix and
76              range.
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78       destructive-repair
79              Make a (potentially destructive) effort to recover  a  corrupted
80              database.   Note that in the case of rocksdb this may corrupt an
81              otherwise uncorrupted database--use this only as a last resort!
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AVAILABILITY

84       ceph-kvstore-tool is part of Ceph, a massively  scalable,  open-source,
85       distributed  storage  system. Please refer to the Ceph documentation at
86       http://ceph.com/docs for more information.
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SEE ALSO

89       ceph(8)
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92       2010-2014, Inktank Storage, Inc. and contributors. Licensed under  Cre‐
93       ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
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98dev                              Apr 29, 2019             CEPH-KVSTORE-TOOL(8)
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