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Feature #363

closed

Support writeback cache

Added by Wido den Hollander over 13 years ago. Updated almost 12 years ago.

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

0%

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Description

When trying to use the cache=writeback i found out that this doesn't change anything.

Sage suggested that something might has to be implemented in the rbd driver.

Searching trough the qcow2 code confirms that:

rbd uses bdrv_file_open which does not support Writeback caching, where qcow2 uses bdrv_open, which does support wb.

Although using writeback could lead to data loss in case of a crash or power failure, it might be usefull in certain situations.

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 #1

Updated by Wido den Hollander over 13 years ago

Seems that it is supported right now, but it doesn't make a difference when using it.

This issue can be closed

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 #2

Updated by Sage Weil over 13 years ago

  • Status changed from New to Closed
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 #3

Updated by Sage Weil over 13 years ago

  • Project changed from 3 to 6
  • Category deleted (9)
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 #4

Updated by Sage Weil almost 12 years ago

  • Project changed from 6 to rbd
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