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doc: upmap docs; various missing links for release notes #16637

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merged 2 commits into from Aug 1, 2017

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liewegas commented Jul 27, 2017

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@liewegas liewegas requested a review from tchaikov Jul 27, 2017

@liewegas liewegas added this to the luminous milestone Jul 27, 2017

==================
Starting in Luminous v12.2.z there is a new *pg-upmap* exception table
in the OSDMap that allows the cluster to explicit map specific PGs to

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tchaikov Jul 28, 2017

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s/explicit/explicitly/

does less work). If it cannot find any additional changes to make
it will stop early (i.e., when the pool distribution is perfect).
The ``max-deviation`` value defaults to `.01` (i.e., 1%). If a OSD

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tchaikov Jul 28, 2017

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s/a OSD/an OSD/

It is highly recommended that optimization be done for each pool
individually, or for sets of similarly-utilized pools. You can
specify the ``--upmap-pool`` option multiple times. Similar pools

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tchaikov Jul 28, 2017

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s/means/mean/ ?

The key caveat to this new mechanism is that it requires that all
clients understand the new *pg-upmap* structure in the OSDMap. It is
also not yet very use friendly.

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tchaikov Jul 28, 2017

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s/use/user/

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tchaikov approved these changes Jul 28, 2017 edited

lgtm modulo s/use/user/

liewegas added some commits Jul 27, 2017

doc/rados/operations/upmap: document new upmap feature
Signed-off-by: Sage Weil <sage@redhat.com>
doc/release-notes: add various links to docs
Signed-off-by: Sage Weil <sage@redhat.com>

@liewegas liewegas merged commit 4839485 into master Aug 1, 2017

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@liewegas liewegas deleted the wip-doc-links branch Aug 1, 2017

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