doc/glossary: add "primary affinity" to glossary

Add "Primary Affinity" to the glossary and link to the information in
the RADOS documentation that (more or less) explains it.

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit f3a3f10e9ce0bf96d5eba25a786cdd254340878b)

diff --git a/doc/glossary.rst b/doc/glossary.rst
index 0ccbd37af266e904ec599f04d495c6f827d930b5..3158ab631ef9b4645504f4b704e019cb3855a2a3 100644 (file)
--- a/doc/glossary.rst
+++ b/doc/glossary.rst
@@ -330,6 +330,13 @@
        Pools
                 See :term:`pool`.
 
+       :ref:`Primary Affinity <rados_ops_primary_affinity>`
+                The characteristic of an OSD that governs the likelihood that
+                a given OSD will be selected as the primary OSD (or "lead
+                OSD") in an acting set. Primary affinity was introduced in
+                Firefly (v. 0.80). See :ref:`Primary Affinity
+                <rados_ops_primary_affinity>`.
+
        RADOS
                 **R**\eliable **A**\utonomic **D**\istributed **O**\bject
                 **S**\tore. RADOS is the object store that provides a scalable

diff --git a/doc/rados/operations/crush-map.rst b/doc/rados/operations/crush-map.rst
index 1a6b1216f1d7b48a37ac7838afef24637df48e65..7a2a8ab393f53e0872a80c0d0f39f70fc25bae68 100644 (file)
--- a/doc/rados/operations/crush-map.rst
+++ b/doc/rados/operations/crush-map.rst
@@ -1043,6 +1043,8 @@ operations are served from the primary OSD of each PG. For erasure-coded pools,
 however, the speed of read operations can be increased by enabling **fast
 read** (see :ref:`pool-settings`).
 
+.. _rados_ops_primary_affinity:
+
 Primary Affinity
 ----------------