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doc: document osd-agent-{max,low}-ops options

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Signed-off-by: Kefu Chai <kchai@redhat.com>
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Kefu Chai 2017-02-25 11:16:32 +08:00
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doc/rados/configuration/osd-config-ref.rst
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@ -695,7 +695,26 @@ perform well in a degraded state.
:Type: Boolean
:Default: ``true``
Tiering
=======
``osd agent max ops``
:Description: The maximum number of simultaneous flushing ops per tiering agent
in the high speed mode.
:Type: 32-bit Integer
:Default: ``4``
``osd agent max low ops``
:Description: The maximum number of simultaneous flushing ops per tiering agent
in the low speed mode.
:Type: 32-bit Integer
:Default: ``2``
See `cache target dirty high ratio`_ for when the tiering agent flushes dirty
objects within the high speed mode.
Miscellaneous
=============
@ -788,3 +807,4 @@ Miscellaneous
.. _Monitoring OSDs and PGs: ../../operations/monitoring-osd-pg#peering
.. _Pool & PG Config Reference: ../pool-pg-config-ref
.. _Journal Config Reference: ../journal-ref
.. _cache target dirty high ratio: ../../operations/pools#cache-target-dirty-high-ratio