os/bluestore: optional debug mode to identify aio stalls #11818
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Signed-off-by: Sage Weil <sage@redhat.com>
Signed-off-by: Sage Weil <sage@redhat.com>
This is additional bookkeeping to track the oldest aio in flight, so we make it optional, and disabled by default. It is useful for identifying buggy kernel aio or bad devices. Signed-off-by: Sage Weil <sage@redhat.com>
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