authors/changelog update for 2.21.0 release

Change-Id: Iac51a69c71491e5a8db435aae396178a6c592c73

.mailmap

@@ -79,7 +79,7 @@ Minwoo Bae <minwoob@us.ibm.com> Minwoo B
 Jaivish Kothari <jaivish.kothari@nectechnologies.in> <janonymous.codevulture@gmail.com>
 Michael Matur <michael.matur@gmail.com>
 Kazuhiro Miyahara <miyahara.kazuhiro@lab.ntt.co.jp>
-Alexandra Settle <alexandra.settle@rackspace.com>
+Alexandra Settle <asettle@suse.com> <alexandra.settle@rackspace.com>
 Kenichiro Matsuda <matsuda_kenichi@jp.fujitsu.com>
 Atsushi Sakai <sakaia@jp.fujitsu.com>
 Takashi Natsume <natsume.takashi@lab.ntt.co.jp>

AUTHORS

@@ -45,7 +45,7 @@ Alex Holden (alex@alexjonasholden.com)
 Alex Pecoraro (alex.pecoraro@emc.com)
 Alex Szarka (szarka@inf.u-szeged.hu)
 Alex Yang (alex890714@gmail.com)
-Alexandra Settle (alexandra.settle@rackspace.com)
+Alexandra Settle (asettle@suse.com)
 Alexandre Lécuyer (alexandre.lecuyer@corp.ovh.com)
 Alfredo Moralejo (amoralej@redhat.com)
 Alistair Coles (alistairncoles@gmail.com)
@@ -166,6 +166,7 @@ Fujita Tomonori (fujita.tomonori@lab.ntt.co.jp)
 Félix Cantournet (felix.cantournet@cloudwatt.com)
 Gage Hugo (gh159m@att.com)
 Ganesh Maharaj Mahalingam (ganesh.mahalingam@intel.com)
+gaobin (gaobin@inspur.com)
 gaofei (gao.fei@inspur.com)
 Gaurav B. Gangalwar (gaurav@gluster.com)
 gecong1973 (ge.cong@zte.com.cn)
@@ -277,6 +278,7 @@ Mehdi Abaakouk (sileht@redhat.com)
 melissaml (ma.lei@99cloud.net)
 Michael Matur (michael.matur@gmail.com)
 Michael Shuler (mshuler@gmail.com)
+Michele Valsecchi (mvalsecc@redhat.com)
 Mike Fedosin (mfedosin@mirantis.com)
 Mingyu Li (li.mingyu@99cloud.net)
 Minwoo Bae (minwoob@us.ibm.com)

CHANGELOG

@@ -1,3 +1,61 @@
+swift (2.21.0, OpenStack Stein release)
+
+    * Change the behavior of the EC reconstructor to perform a
+      fragment rebuild to a handoff node when a primary peer responds
+      with 507 to the REPLICATE request. This changes EC to match the
+      existing behavior of replication when drives fail. After a
+      rebalance of EC rings (potentially removing unmounted/failed
+      devices), it's most IO efficient to run in handoffs_only mode to
+      avoid unnecessary rebuilds.
+
+    * O_TMPFILE support is now detected by attempting to use it
+      instead of looking at the kernel version. This allows older
+      kernels with backported patches to take advantage of the
+      O_TMPFILE functionality.
+
+    * Add slo_manifest_hook callback to allow other middlewares to
+      impose additional constraints on or make edits to SLO manifests
+      before being written. For example, a middleware could enforce
+      minimum segment size or insert data segments.
+
+    * Fixed an issue with multi-region EC policies that caused the EC
+      reconstructor to constantly attempt cross-region rebuild
+      traffic.
+
+    * Fixed an issue where S3 API v4 signatures would not be validated
+      against the body of the request, allowing a replay attack if
+      request headers were captured by a malicious third party.
+
+    * Display crypto data/metadata details in swift-object-info.
+
+    * formpost can now accept a content-encoding parameter.
+
+    * Fixed an issue where multipart uploads with the S3 API would
+      sometimes report an error despite all segments being upload
+      successfully.
+
+    * Multipart object segments are now actually deleted when the
+      multipart object is deleted via the S3 API.
+
+    * Swift now returns a 503 (instead of a 500) when an account
+      auto-create fails.
+
+    * Fixed a bug where encryption would store the incorrect key
+      metadata if the object name starts with a slash.
+
+    * Fixed an issue where an object server failure during a client
+      download could leave an open socket between the proxy and
+      client.
+
+    * Fixed an issue where deleted EC objects didn't have their
+      on-disk directories cleaned up. This would cause extra resource
+      usage on the object servers.
+
+    * Fixed issue where bulk requests using xml and expect
+      100-continue would return a malformed HTTP response.
+
+    * Various other minor bug fixes and improvements.
+
 swift (2.20.0)
 
     * S3 API compatibility updates

releasenotes/notes/2_21_0_release-d8ae33ef18b7be3a.yaml

@@ -0,0 +1,69 @@
+---
+features:
+  - |
+    Change the behavior of the EC reconstructor to perform a
+    fragment rebuild to a handoff node when a primary peer responds
+    with 507 to the REPLICATE request. This changes EC to match the
+    existing behavior of replication when drives fail. After a
+    rebalance of EC rings (potentially removing unmounted/failed
+    devices), it's most IO efficient to run in handoffs_only mode to
+    avoid unnecessary rebuilds.
+
+  - |
+    O_TMPFILE support is now detected by attempting to use it
+    instead of looking at the kernel version. This allows older
+    kernels with backported patches to take advantage of the
+    O_TMPFILE functionality.
+
+  - |
+    Add slo_manifest_hook callback to allow other middlewares to
+    impose additional constraints on or make edits to SLO manifests
+    before being written. For example, a middleware could enforce
+    minimum segment size or insert data segments.
+
+  - |
+    Fixed an issue with multi-region EC policies that caused the EC
+    reconstructor to constantly attempt cross-region rebuild
+    traffic.
+
+  - |
+    Fixed an issue where S3 API v4 signatures would not be validated
+    against the body of the request, allowing a replay attack if
+    request headers were captured by a malicious third party.
+
+  - Display crypto data/metadata details in swift-object-info.
+
+  - formpost can now accept a content-encoding parameter.
+
+  - |
+    Fixed an issue where multipart uploads with the S3 API would
+    sometimes report an error despite all segments being upload
+    successfully.
+
+  - |
+    Multipart object segments are now actually deleted when the
+    multipart object is deleted via the S3 API.
+
+  - |
+    Swift now returns a 503 (instead of a 500) when an account
+    auto-create fails.
+
+  - |
+    Fixed a bug where encryption would store the incorrect key
+    metadata if the object name starts with a slash.
+
+  - |
+    Fixed an issue where an object server failure during a client
+    download could leave an open socket between the proxy and
+    client.
+
+  - |
+    Fixed an issue where deleted EC objects didn't have their
+    on-disk directories cleaned up. This would cause extra resource
+    usage on the object servers.
+
+  - |
+    Fixed issue where bulk requests using xml and expect
+    100-continue would return a malformed HTTP response.
+
+  - Various other minor bug fixes and improvements.