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Feature #22478

multifs: support snapshots for shared data pool

Added by Patrick Donnelly almost 3 years ago. Updated about 1 year ago.

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

0%

Source:
Development
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
MDS
Labels (FS):
multifs, snapshots, task(easy)
Pull request ID:

Description

If two file systems use the same data pool with different RADOS namespaces, it is necessary for them to cooperate on snapid increments.

I think this could be done with a shared RADOS object storing a counter?


Related issues

Blocks CephFS - Feature #22477: multifs: remove multifs experimental warnings New 12/19/2017

History

#1 Updated by Patrick Donnelly almost 3 years ago

  • Blocks Feature #22477: multifs: remove multifs experimental warnings added

#2 Updated by Patrick Donnelly over 2 years ago

  • Assignee set to Zheng Yan
  • Target version changed from v13.0.0 to v14.0.0
  • Source set to Development
  • Tags set to snaps,multifs

#3 Updated by Patrick Donnelly over 2 years ago

  • Priority changed from Normal to Urgent
  • Tags deleted (snaps,multifs)
  • Labels (FS) multifs, snapshots added

#4 Updated by Patrick Donnelly over 1 year ago

  • Target version changed from v14.0.0 to v15.0.0

#5 Updated by Patrick Donnelly over 1 year ago

  • Assignee changed from Zheng Yan to Rishabh Dave
  • Priority changed from Urgent to High
  • Start date deleted (12/19/2017)
  • Labels (FS) task(easy) added

#6 Updated by Patrick Donnelly about 1 year ago

  • Status changed from New to Rejected

Now that pg_autoscaler exists with pg merging, this feature is not compelling. Using separate pools for multifs has always been more attractive from an accounting perspective. Now pools are cheap to make and use so let's just do that.

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