doc: add release notes for Octopus 15.2.7

Signed-off-by: Nathan Cutler <ncutler@suse.com>

diff --git a/doc/releases/octopus.rst b/doc/releases/octopus.rst
index 3b65b118da83ed2025a25f2e54682528415682ed..b470fabdc7a996db93e8ab8c83953625979feced 100644 (file)
--- a/doc/releases/octopus.rst
+++ b/doc/releases/octopus.rst
@@ -1,3 +1,20 @@
+v15.2.7 Octopus
+===============
+
+This is the 7th backport release in the Octopus series. This release fixes
+a serious bug in RGW that has been shown to cause data loss when a read of
+a large RGW object (i.e., one with at least one tail segment) takes longer than
+one half the time specified in the configuration option ``rgw_gc_obj_min_wait``.
+The bug causes the tail segments of that read object to be added to the RGW
+garbage collection queue, which will in turn cause them to be deleted after
+a period of time.
+
+Changelog
+---------
+
+* rgw: during GC defer, prevent new GC enqueue (`issue#47866 <https://tracker.ceph.com/issues/47866>`_, `pr#38249 <https://github.com/ceph/ceph/pull/38249>`_, Eric Ivancich, Casey Bodley)
+
+
 v15.2.6 Octopus
 ===============