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doc/rados/configuration: add more scrub related config

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Signed-off-by: Kefu Chai <kchai@redhat.com>
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Kefu Chai 2015-07-21 19:50:00 +08:00
parent 4577068370
commit 1baeb1c743
1 changed files with 28 additions and 0 deletions
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doc/rados/configuration/osd-config-ref.rst
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@ -219,6 +219,23 @@ scrubbing operations.
:Type: 32-bit Int
:Default: ``1``
``osd scrub begin hour``
:Description: The time of day for the lower bound when a scheduled scrub can be
performed.
:Type: Integer in the range of 0 to 24
:Default: ``0``
``osd scrub end hour``
:Description: The time of day for the upper bound when a scheduled scrub can be
performed. Along with ``osd scrub begin hour``, they define a time
window, in which the scrubs can happen. But a scrub will be performed
no matter the time window allows or not, as long as the placement
group's scrub interval exceeds ``osd scrub max interval``.
:Type: Integer in the range of 0 to 24
:Default: ``24``
``osd scrub thread timeout``
@ -273,6 +290,17 @@ scrubbing operations.
:Default: Once per week. ``60*60*24*7``
``osd scrub interval randomize ratio``
:Description: Add a random delay to ``osd scrub min interval`` when scheduling
the next scrub job for a placement group. The delay is a random
value less than ``osd scrub min interval`` \*
``osd scrub interval randomized ratio``. So the default setting
practically randomly spreads the scrubs out in the allowed time
window of ``[1, 1.5]`` \* ``osd scrub min interval``.
:Type: Float
:Default: ``0.5``
``osd deep scrub stride``
:Description: Read size when doing a deep scrub.