From 65d03bae8b4f50cc3cbaa50640eaeab4cabd711f Mon Sep 17 00:00:00 2001 From: David Zafman Date: Thu, 5 Dec 2019 09:52:04 -0800 Subject: [PATCH] release note: Add pending release notes for already merged code Follow on to https://github.com/ceph/ceph/pull/31774 Signed-off-by: David Zafman --- PendingReleaseNotes | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/PendingReleaseNotes b/PendingReleaseNotes index 140bedd078f..b07086d84d6 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -325,3 +325,13 @@ named 'Records'. Note that this does not affect pulling bucket notification from a subscription in a 'pubsub' zone, as these are already wrapped inside that array. + +* The configuration value ``osd_calc_pg_upmaps_max_stddev`` used for upmap + balancing has been removed. Instead use the mgr balancer config + ``upmap_max_deviation`` which now is an integer number of PGs of deviation + from the target PGs per OSD. This can be set with a command like + ``ceph config set mgr mgr/balancer/upmap_max_deviation 2``. The default + ``upmap_max_deviation`` is 1. There are situations where crush rules + would not allow a pool to ever have completely balanced PGs. For example, if + crush requires 1 replica on each of 3 racks, but there are fewer OSDs in 1 of + the racks. In those cases, the configuration value can be increased. -- 2.39.5