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doc: Add pgcalc tool link in placement-groups document

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Fixes #12944

Signed-off-by: Vikhyat Umrao <vumrao@redhat.com>
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Vikhyat Umrao 2015-09-04 16:55:13 +05:30
parent 1369fc3740
commit 406b1d0347
1 changed files with 3 additions and 0 deletions
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doc/rados/operations/placement-groups.rst
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@ -23,6 +23,8 @@ calculated automatically. Here are a few values commonly used:
- If you have more than 50 OSDs, you need to understand the tradeoffs
and how to calculate the ``pg_num`` value by yourself
- For calculating ``pg_num`` value by yourself please take help of `pgcalc`_ tool
As the number of OSDs increases, chosing the right value for pg_num
becomes more important because it has a significant influence on the
behavior of the cluster as well as the durability of the data when
@ -431,3 +433,4 @@ entirely. To mark the "unfound" objects as "lost", execute the following::
.. _Create a Pool: ../pools#createpool
.. _Mapping PGs to OSDs: ../../../architecture#mapping-pgs-to-osds
.. _pgcalc: http://ceph.com/pgcalc/