Add basic AES-XTS client-side encryption support

tests/run_tests.sh

@@ -159,3 +159,6 @@ TEST_NAME=old_csum_4k      OLD=1 OSD_ARGS="--data_csum_type crc32c" OFFSET_ARGS=
 
 ./test_nfs.sh
 ./test_nfs_unaligned_append.sh
+
+./test_write_encrypted.sh
+SCHEME=ec ./test_write_encrypted.sh

tests/test_write_encrypted.sh

@@ -0,0 +1,19 @@
+#!/bin/bash -ex
+
+. `dirname $0`/run_3osds.sh
+
+# Basic AES-XTS encryption test
+
+$ETCDCTL put /vitastor/config/inode/1/1 '{"name":"testimg","size":'$((128*1024*1024))',"enc_key":"'$(openssl rand -hex 64)'"}'
+
+$VITASTOR_FIO -bs=1M -direct=1 -iodepth=4 -mirror_file=./testdata/bin/mirror.bin -end_fsync=1 -rw=write -image=testimg
+
+$VITASTOR_FIO -bs=4k -direct=1 -iodepth=16 -serialize_overlap=1 -mirror_file=./testdata/bin/mirror.bin -verify=md5 -end_fsync=1 -rw=randwrite -image=testimg -runtime=10
+
+$VITASTOR_CLI dd iimg=testimg of=./testdata/bin/read.bin
+diff ./testdata/bin/read.bin ./testdata/bin/mirror.bin
+
+$VITASTOR_CLI dd iimg=testimg of=./testdata/bin/read.bin bs=4k iodepth=32
+diff ./testdata/bin/read.bin ./testdata/bin/mirror.bin
+
+format_green OK