Ceph

Feature #10891

Updated by Alfredo Deza about 9 years ago

To get a specific value for a setting in a pool a user is required to run something like: 

 <pre> 
 sudo ceph osd pool get $poolname $key 
 </pre> 

 Where `$key` is one of: 

 <pre> 
 crash_replay_interval|pg_num|pgp_num| 
  crush_ruleset|hit_set_type|hit_set_ 
  period|hit_set_count|hit_set_fpp|auid| 
  target_max_objects|target_max_bytes| 
  cache_target_dirty_ratio|cache_target_ 
  full_ratio|cache_min_flush_age|cache_ 
  min_evict_age|erasure_code_profile|min_ 
  read_recency_for_promote 
 </pre> 

 But there is no way to get all of the values for a given pool from that subcommand. Instead, a user is required to run an `osd dump`  
 that will contain a fairly verbose output of a lot of values that may not be interesting when only looking for the given pool: 

 In this case, I needed to get values for the 'data' pool: 

 <pre> 
 $ sudo ceph osd dump 
 epoch 13435 
 fsid dd2d2a23-ba22-38d5-22ec-869b5443dddd 
 created 2014-10-22 19:40:33.622313 
 modified 2015-02-11 13:50:16.334207 
 flags 
 pool 0 'rbd' replicated size 3 min_size 2 crush_ruleset 0 object_hash rjenkins pg_num 256 pgp_num 256 last_change 87 flags hashpspool stripe_width 0 
 pool 1 'data' replicated size 2 min_size 1 crush_ruleset 0 object_hash rjenkins pg_num 512 pgp_num 512 last_change 5785 flags hashpspool crash_replay_interval 45 stripe_width 0 
 pool 3 'metadata' replicated size 3 min_size 2 crush_ruleset 0 object_hash rjenkins pg_num 512 pgp_num 512 last_change 106 flags hashpspool stripe_width 0 
 max_osd 53 
 osd.0 up     in    weight 1 up_from 6508 up_thru 13433 down_at 6506 last_clean_interval [6051,6507) 10.8.128.128:6800/19881 10.8.128.128:6805/1019881 10.8.128.128:6816/1019881 10.8.128.128:6817/1019881 exists,up 8ee99dddff-css81-4s03-abssd-103a2ssss9a1ba5 
 osd.1 up     in    weight 1 up_from 2535 up_thru 13433 down_at 2527 last_clean_interval [646,2526) 10.8.128.128:6806/29162 10.8.128.128:6807/29162 10.8.128.128:6808/29162 10.8.128.128:6809/29162 exists,up ad8d42c1-dss4-4ssa-9ss93-f0sf2d4asss49c 
 ... 
 </pre> 

 It would be ideal to be able to do something like: 

 <pre> 
 $ sudo ceph osd pool get all $poolname 
 </pre> 

 or maybe  

 <pre> 
 $ sudo ceph osd pool get $poolname all 
 $ sudo ceph osd pool get $poolname * 
 </pre> 

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