From: Neha Ojha Date: Tue, 12 Apr 2022 18:33:02 +0000 (+0000) Subject: doc/releases/quincy.rst: condense pg_autoscaler notes X-Git-Tag: v17.2.1~43^2~9 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=e90a14be89dae5392dd7681e34b24e331fa2eb94;p=ceph.git doc/releases/quincy.rst: condense pg_autoscaler notes remove scale-down mode and talk about the bulk flag Signed-off-by: Neha Ojha --- diff --git a/doc/releases/quincy.rst b/doc/releases/quincy.rst index 48bfbe10e30f..ab529524507c 100644 --- a/doc/releases/quincy.rst +++ b/doc/releases/quincy.rst @@ -119,25 +119,14 @@ RADOS is fixed, users are advised to avoid using the 'custom' profile or use the workaround mentioned in the tracker. -* MGR: The pg_autoscaler has a new 'scale-down' profile, which provides more - performance from the start for new pools. However, the module still uses - the old behavior by default, which is now called the 'scale-up' profile. - For more detail, see: - - https://docs.ceph.com/en/quincy/rados/operations/placement-groups/ - * MGR: The pg_autoscaler can now be turned `on` and `off` globally - with the `noautoscale` flag. By default this flag is unset and - the default pg_autoscale mode remains the same. - For more detail, see: - - https://docs.ceph.com/en/quincy/rados/operations/placement-groups/ - -* MON/MGR: Pools can now be created with the `--bulk` flag. Any pools created - with `bulk` will use a profile of the `pg_autoscaler` that provides more - performance from the start. However, pools that were created without the - `--bulk` flag use the old behavior by default. For more detail, see: + with the `noautoscale` flag. By default, it is set to `on`, but this flag + can come in handy to prevent rebalancing triggered by autoscaling, during + cluster upgrade and maintenance. Pools can now be created with the `--bulk` + flag, which allows the autoscaler to allocate more PGs to such pools. This + can be useful to get better out of the box performance for data-heavy pools. + For more details about autoscaling, see: https://docs.ceph.com/en/quincy/rados/operations/placement-groups/