Add decommission compression+encryption enabled tests (#15322)

update compression environment variables to follow
the expected sub-system style, however support fallback
mode.

docs/distributed/README.md

@@ -28,7 +28,6 @@ MinIO follows strict **read-after-write** and **list-after-write** consistency m
 
 **If MinIO distributed setup is using NFS volumes underneath it is not guaranteed MinIO will provide these consistency guarantees since NFS is not strictly consistent (If you must use NFS we recommend that you atleast use NFSv4 instead of NFSv3 for relatively better outcomes).**
 
-
 ## Get started
 
 If you're aware of stand-alone MinIO set up, the process remains largely the same. MinIO server automatically switches to stand-alone or distributed mode, depending on the command line parameters.

docs/distributed/decom-compressed-sse-s3.sh

@@ -0,0 +1,143 @@
+#!/bin/bash
+
+if [ -n "$TEST_DEBUG" ]; then
+    set -x
+fi
+
+pkill minio
+rm -rf /tmp/xl
+
+if [ ! -f ./mc ]; then
+    wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc && \
+	chmod +x mc
+fi
+
+export CI=true
+export MINIO_COMPRESSION_ENABLE="on"
+export MINIO_COMPRESSION_EXTENSIONS=".go"
+export MINIO_COMPRESSION_MIME_TYPES="application/*"
+export MINIO_COMPRESSION_ALLOW_ENCRYPTION="on"
+export MINIO_KMS_AUTO_ENCRYPTION=on
+export MINIO_KMS_SECRET_KEY=my-minio-key:OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw=
+export MC_HOST_myminio="http://minioadmin:minioadmin@localhost:9000/"
+
+(minio server /tmp/xl/{1...10}/disk{0...1} 2>&1 >/dev/null)&
+pid=$!
+
+sleep 2
+
+./mc admin user add myminio/ minio123 minio123
+./mc admin user add myminio/ minio12345 minio12345
+
+./mc admin policy add myminio/ rw ./docs/distributed/rw.json
+./mc admin policy add myminio/ lake ./docs/distributed/rw.json
+
+./mc admin policy set myminio/ rw user=minio123
+./mc admin policy set myminio/ lake,rw user=minio12345
+
+./mc mb -l myminio/versioned
+
+./mc mirror internal myminio/versioned/ --quiet >/dev/null
+
+## Soft delete (creates delete markers)
+./mc rm -r --force myminio/versioned >/dev/null
+
+## mirror again to create another set of version on top
+./mc mirror internal myminio/versioned/ --quiet >/dev/null
+
+expected_checksum=$(./mc cat internal/dsync/drwmutex.go | md5sum)
+
+user_count=$(./mc admin user list myminio/ | wc -l)
+policy_count=$(./mc admin policy list myminio/ | wc -l)
+
+kill $pid
+
+(minio server /tmp/xl/{1...10}/disk{0...1} /tmp/xl/{11...30}/disk{0...3} 2>&1 >/tmp/expanded.log) &
+pid=$!
+
+sleep 2
+
+expanded_user_count=$(./mc admin user list myminio/ | wc -l)
+expanded_policy_count=$(./mc admin policy list myminio/ | wc -l)
+
+if [ $user_count -ne $expanded_user_count ]; then
+    echo "BUG: original user count differs from expanded setup"
+    exit 1
+fi
+
+if [ $policy_count -ne $expanded_policy_count ]; then
+    echo "BUG: original policy count  differs from expanded setup"
+    exit 1
+fi
+
+./mc version info myminio/versioned | grep -q "versioning is enabled"
+ret=$?
+if [ $ret -ne 0 ]; then
+    echo "expected versioning enabled after expansion"
+    exit 1
+fi
+
+./mc mirror cmd myminio/versioned/ --quiet >/dev/null
+
+./mc ls -r myminio/versioned/ > expanded_ns.txt
+./mc ls -r --versions myminio/versioned/ > expanded_ns_versions.txt
+
+./mc admin decom start myminio/ /tmp/xl/{1...10}/disk{0...1}
+
+until $(./mc admin decom status myminio/ | grep -q Complete)
+do
+    echo "waiting for decom to finish..."
+    sleep 1
+done
+
+kill $pid
+
+(minio server /tmp/xl/{11...30}/disk{0...3} 2>&1 >/tmp/removed.log)&
+pid=$!
+
+sleep 2
+
+decom_user_count=$(./mc admin user list myminio/ | wc -l)
+decom_policy_count=$(./mc admin policy list myminio/ | wc -l)
+
+if [ $user_count -ne $decom_user_count ]; then
+    echo "BUG: original user count differs after decommission"
+    exit 1
+fi
+
+if [ $policy_count -ne $decom_policy_count ]; then
+    echo "BUG: original policy count differs after decommission"
+    exit 1
+fi
+
+./mc version info myminio/versioned | grep -q "versioning is enabled"
+ret=$?
+if [ $ret -ne 0 ]; then
+    echo "BUG: expected versioning enabled after decommission"
+    exit 1
+fi
+
+got_checksum=$(./mc cat myminio/versioned/dsync/drwmutex.go | md5sum)
+if [ "${expected_checksum}" != "${got_checksum}" ]; then
+    echo "BUG: decommission failed on encrypted objects: expected ${expected_checksum} got ${got_checksum}"
+    exit 1
+fi
+
+./mc ls -r myminio/versioned > decommissioned_ns.txt
+./mc ls -r --versions myminio/versioned > decommissioned_ns_versions.txt
+
+out=$(diff -qpruN expanded_ns.txt decommissioned_ns.txt)
+ret=$?
+if [ $ret -ne 0 ]; then
+    echo "BUG: expected no missing entries after decommission: $out"
+    exit 1
+fi
+
+out=$(diff -qpruN expanded_ns_versions.txt decommissioned_ns_versions.txt)
+ret=$?
+if [ $ret -ne 0 ]; then
+    echo "BUG: expected no missing entries after decommission: $out"
+    exit 1
+fi
+
+# kill $pid