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Feature #16780

closed

rbd-mirror: use sparse read during image sync

Added by Jason Dillaman almost 8 years ago. Updated about 7 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Reviewed:
Affected Versions:
Pull request ID:

Description

If 1 byte is used in a primary image backing object, the image sync process will read and write a full object size chunk. Optimize this behavior by using sparse read / write.

Related issues 1 (0 open — 1 closed)

Copied to rbd - Backport #17879: jewel: rbd-mirror: use sparse read during image syncClosedAbhishek VarshneyActions
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 #1

Updated by Anonymous over 7 years ago

should we make it configurable or always do sparse read?

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 #2

Updated by Jason Dillaman over 7 years ago

@Tianqing Li: essentially no harm to keep it enabled always -- librbd already utilizes sparse reads for every read request.

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 #3

Updated by Anonymous over 7 years ago

all right.

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 #4

Updated by Jason Dillaman over 7 years ago

  • Status changed from New to Fix Under Review
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 #5

Updated by Mykola Golub over 7 years ago

  • Status changed from Fix Under Review to Pending Backport
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 #6

Updated by Nathan Cutler over 7 years ago

  • Copied to Backport #17879: jewel: rbd-mirror: use sparse read during image sync added
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 #7

Updated by Jason Dillaman about 7 years ago

  • Status changed from Pending Backport to Resolved
  • Backport deleted (jewel)
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