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Task #7239

closed
NS LN

Explain to Nico how a data block is distributed / saved in ceph and relate it to our missing space problem

Task #7239: Explain to Nico how a data block is distributed / saved in ceph and relate it to our missing space problem

Added by Nico Schottelius over 6 years ago. Updated over 5 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
ll nu
Target version:
-
Start date:
10/20/2019
Due date:
10/22/2019
% Done:

0%

Estimated time:
PM Check date:

Description

Given a 4MB block, how does ceph distribute it?

  • Reliance on number of servers
  • Order of algorithm
  • Find out why a new host was used intensively

-> 95% sure everything is in the crushmap

Expected outcome

  • Explanation of how ceph saves and why we are missing around 30TB (90TB raw) storage

NS Updated by Nico Schottelius over 6 years ago Actions
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 #1

  • Description updated (diff)

LN Updated by ll nu over 6 years ago Actions
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 #2

  • Status changed from New to Seen

NS Updated by Nico Schottelius over 5 years ago Actions
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 #3

  • Status changed from Seen to Rejected
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