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Feature #1126

closed

crush: extend rule definition

Added by Sage Weil almost 13 years ago. Updated over 5 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Tags:
Backport:
Reviewed:
Affected Versions:
Component(RADOS):
Pull request ID:

Description

The current rule command structure does not allow you to do something like:

- pick 2 racks
- pick 2 devices under the first rack
- pick 1 (or N-2) device(s) under the second rack

which is something we should probably support. This is what hdfs does, and makes some sense as data placement policy.

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 #1

Updated by Sage Weil almost 13 years ago

  • Target version changed from v0.31 to 12
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 #2

Updated by Sage Weil over 12 years ago

  • Target version changed from 12 to v0.36
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 #3

Updated by Sage Weil over 12 years ago

  • Translation missing: en.field_position set to 1
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 #4

Updated by Sage Weil over 12 years ago

  • Translation missing: en.field_position deleted (16)
  • Translation missing: en.field_position set to 1
  • Translation missing: en.field_position changed from 1 to 867
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 #5

Updated by Sage Weil over 12 years ago

  • Target version deleted (v0.36)
  • Translation missing: en.field_position deleted (888)
  • Translation missing: en.field_position set to 45
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 #6

Updated by Greg Farnum almost 7 years ago

  • Project changed from Ceph to RADOS
  • Category deleted (10)
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 #7

Updated by Sage Weil over 5 years ago

  • Status changed from New to Rejected

actually, you can do the above, just set size=3 and you'll get 2 in first rack and 1 in second rack.

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