From: Vikhyat Umrao Date: Fri, 4 Sep 2015 11:25:13 +0000 (+0530) Subject: doc: Add pgcalc tool link in placement-groups document X-Git-Tag: v9.1.0~218^2 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=406b1d0347dcc27f698c7ec361a1e5d6a66277e8;p=ceph.git doc: Add pgcalc tool link in placement-groups document Fixes #12944 Signed-off-by: Vikhyat Umrao --- diff --git a/doc/rados/operations/placement-groups.rst b/doc/rados/operations/placement-groups.rst index b408f9c8bd9..05f07514bbb 100644 --- a/doc/rados/operations/placement-groups.rst +++ b/doc/rados/operations/placement-groups.rst @@ -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/