erasure-code: workunit to check for encoding regression

Clone the archive of encoded objects and decode all archived objects, up
to and including the current ceph version.

http://tracker.ceph.com/issues/9420 Refs: #9420

Signed-off-by: Loic Dachary <loic-201408@dachary.org>

.gitmodules

@@ -19,3 +19,7 @@
 	path = src/rocksdb
 	url = git://github.com/ceph/rocksdb
 	ignore = dirty
+[submodule "ceph-erasure-code-corpus"]
+	path = ceph-erasure-code-corpus
+	url = https://github.com/ceph/ceph-erasure-code-corpus.git
+

ceph-erasure-code-corpus

@@ -0,0 +1 @@
+Subproject commit f1f95a1de9dea91b0f8830a01e8b8673e3f241e1

qa/workunits/erasure-code/encode-decode-non-regression.sh

@@ -0,0 +1,38 @@
+#!/bin/bash -ex
+#
+# Copyright (C) 2014 Red Hat <contact@redhat.com>
+#
+# Author: Loic Dachary <loic@dachary.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Library Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Library Public License for more details.
+#
+: ${CORPUS:=https://github.com/dachary/ceph-erasure-code-corpus.git}
+: ${DIRECTORY:=../ceph-erasure-code-corpus}
+
+# when running from sources, the current directory must have precedence
+export PATH=:$PATH
+
+if ! test -d $DIRECTORY ; then
+    git clone $CORPUS $DIRECTORY
+fi
+
+my_version=v$(ceph --version | cut -f3 -d ' ')
+
+all_versions=$((ls -d $DIRECTORY/v* ; echo $DIRECTORY/$my_version ) | sort)
+
+for version in $all_versions ; do
+    if test -d $version ; then
+        $version/non-regression.sh
+    fi
+    if test $version = $DIRECTORY/$my_version ; then
+        break
+    fi
+done