From: Greg Farnum <gfarnum@redhat.com>
Date: Mon, 17 Apr 2017 21:32:38 +0000 (-0700)
Subject: PendingReleaseNotes: discuss snap trim improvements
X-Git-Tag: v11.2.1~21^2~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=33c211bf9868156e41d7196cbac5dc6bff418248;p=ceph.git

PendingReleaseNotes: discuss snap trim improvements

Signed-off-by: Greg Farnum <gfarnum@redhat.com>
---

diff --git a/PendingReleaseNotes b/PendingReleaseNotes
index 01367280b48..33f960e9be9 100644
--- a/PendingReleaseNotes
+++ b/PendingReleaseNotes
@@ -21,3 +21,10 @@
   before::
 
      ceph osd rm osd.123
+
+* This release greatly improves control and throttling of the snap trimmer. It
+  introduces the "osd max trimming pgs" option (defaulting to 2), which limits
+  how many PGs on an OSD can be trimming snapshots at a time. And it restores
+  the safe use of the "osd snap trim sleep" option, wihch defaults to 0 but
+  otherwise adds the given number of seconds in delay between every dispatch
+  of trim operations to the underlying system.