From fce2a7782d6bddada9258e5028e6459e72b4381e Mon Sep 17 00:00:00 2001 From: Laura Flores Date: Fri, 27 May 2022 13:28:19 -0500 Subject: [PATCH] PendingReleaseNotes: add note about `bluestore_zero_block_detection` config option Signed-off-by: Laura Flores --- PendingReleaseNotes | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/PendingReleaseNotes b/PendingReleaseNotes index 19833faafcb..69226a01ec0 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -43,3 +43,13 @@ * system * truncated * user_stats_sync + +>=17.2.1 + +* The "BlueStore zero block detection" feature (first introduced to Quincy in +https://github.com/ceph/ceph/pull/43337) has been turned off by default with a +new global configuration called `bluestore_zero_block_detection`. This feature, +intended for large-scale synthetic testing, does not interact well with some RBD +and CephFS features. Any side effects experienced in previous Quincy versions +would no longer occur, provided that the configuration remains set to false. +Relevant tracker: https://tracker.ceph.com/issues/55521 -- 2.39.5