From: David Zafman Date: Thu, 5 Dec 2019 17:52:04 +0000 (-0800) Subject: release note: Add pending release notes for already merged code X-Git-Tag: v15.1.0~570^2 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=65d03bae8b4f50cc3cbaa50640eaeab4cabd711f;p=ceph.git 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 --- 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.