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librbd: explicitly disable readahead for writearound cache #38602

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merged 1 commit into from Dec 18, 2020

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dillaman
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The readahead IOs would be wasted effort since the writearound
cache does not service reads.

Fixes: https://tracker.ceph.com/issues/48486
Signed-off-by: Jason Dillaman dillaman@redhat.com

Checklist

  • References tracker ticket
  • Updates documentation if necessary
  • Includes tests for new functionality or reproducer for bug

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The readahead IOs would be wasted effort since the writearound
cache does not service reads.

Fixes: https://tracker.ceph.com/issues/48486
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
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@trociny trociny left a comment

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LGTM

@trociny trociny merged commit e73c097 into ceph:master Dec 18, 2020
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