diff --git a/allocator.cpp b/allocator.cpp
index d41c55824..a467dfa13 100644
--- a/allocator.cpp
+++ b/allocator.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <stdexcept>
 #include "allocator.h"
 
diff --git a/allocator.h b/allocator.h
index 835071fd7..fff057a25 100644
--- a/allocator.h
+++ b/allocator.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include <stdint.h>
diff --git a/base64.cpp b/base64.cpp
index dfe366eb0..3dd5abc3f 100644
--- a/base64.cpp
+++ b/base64.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "base64.h"
 
 std::string base64_encode(const std::string &in)
diff --git a/base64.h b/base64.h
index a6824b8b0..f68d6e1a1 100644
--- a/base64.h
+++ b/base64.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 #include <string>
 
diff --git a/blockstore.cpp b/blockstore.cpp
index adc4e448f..6e11ed179 100644
--- a/blockstore.cpp
+++ b/blockstore.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 blockstore_t::blockstore_t(blockstore_config_t & config, ring_loop_t *ringloop)
diff --git a/blockstore.h b/blockstore.h
index 65fd87ffb..09943c676 100644
--- a/blockstore.h
+++ b/blockstore.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #ifndef _LARGEFILE64_SOURCE
diff --git a/blockstore_flush.cpp b/blockstore_flush.cpp
index f4188dd08..16199c575 100644
--- a/blockstore_flush.cpp
+++ b/blockstore_flush.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 journal_flusher_t::journal_flusher_t(int flusher_count, blockstore_impl_t *bs)
diff --git a/blockstore_flush.h b/blockstore_flush.h
index 1bd451782..f8a1be3cd 100644
--- a/blockstore_flush.h
+++ b/blockstore_flush.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 struct copy_buffer_t
 {
     uint64_t offset, len;
diff --git a/blockstore_impl.cpp b/blockstore_impl.cpp
index fb2b6b47b..1cc8fcf85 100644
--- a/blockstore_impl.cpp
+++ b/blockstore_impl.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 blockstore_impl_t::blockstore_impl_t(blockstore_config_t & config, ring_loop_t *ringloop)
diff --git a/blockstore_impl.h b/blockstore_impl.h
index fa2527755..3a6a5d9b4 100644
--- a/blockstore_impl.h
+++ b/blockstore_impl.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include "blockstore.h"
diff --git a/blockstore_init.cpp b/blockstore_init.cpp
index 0750cdd2c..c42068d7e 100644
--- a/blockstore_init.cpp
+++ b/blockstore_init.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 blockstore_init_meta::blockstore_init_meta(blockstore_impl_t *bs)
diff --git a/blockstore_init.h b/blockstore_init.h
index 07862f69b..b8931cf83 100644
--- a/blockstore_init.h
+++ b/blockstore_init.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 class blockstore_init_meta
diff --git a/blockstore_journal.cpp b/blockstore_journal.cpp
index 525ea7baa..39174e9b9 100644
--- a/blockstore_journal.cpp
+++ b/blockstore_journal.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 blockstore_journal_check_t::blockstore_journal_check_t(blockstore_impl_t *bs)
diff --git a/blockstore_journal.h b/blockstore_journal.h
index a0d2e5ebb..d0c067692 100644
--- a/blockstore_journal.h
+++ b/blockstore_journal.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include "crc32c.h"
diff --git a/blockstore_open.cpp b/blockstore_open.cpp
index 76c2d8151..93060155c 100644
--- a/blockstore_open.cpp
+++ b/blockstore_open.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <sys/file.h>
 #include "blockstore_impl.h"
 
diff --git a/blockstore_read.cpp b/blockstore_read.cpp
index f60fbdd40..dc2bfda86 100644
--- a/blockstore_read.cpp
+++ b/blockstore_read.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 int blockstore_impl_t::fulfill_read_push(blockstore_op_t *op, void *buf, uint64_t offset, uint64_t len,
diff --git a/blockstore_rollback.cpp b/blockstore_rollback.cpp
index b980be867..d3003ebbb 100644
--- a/blockstore_rollback.cpp
+++ b/blockstore_rollback.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 int blockstore_impl_t::dequeue_rollback(blockstore_op_t *op)
diff --git a/blockstore_stable.cpp b/blockstore_stable.cpp
index da1e0b2e2..715da837e 100644
--- a/blockstore_stable.cpp
+++ b/blockstore_stable.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 // Stabilize small write:
diff --git a/blockstore_sync.cpp b/blockstore_sync.cpp
index e95911c0c..304502ce5 100644
--- a/blockstore_sync.cpp
+++ b/blockstore_sync.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 #define SYNC_HAS_SMALL 1
diff --git a/blockstore_write.cpp b/blockstore_write.cpp
index a7ffcd411..33f47b375 100644
--- a/blockstore_write.cpp
+++ b/blockstore_write.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "blockstore_impl.h"
 
 bool blockstore_impl_t::enqueue_write(blockstore_op_t *op)
diff --git a/cluster_client.cpp b/cluster_client.cpp
index c8c28cf8b..730205520 100644
--- a/cluster_client.cpp
+++ b/cluster_client.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "cluster_client.h"
 
 cluster_client_t::cluster_client_t(ring_loop_t *ringloop, timerfd_manager_t *tfd, json11::Json & config)
diff --git a/cluster_client.h b/cluster_client.h
index 1ed4335a6..7516a723e 100644
--- a/cluster_client.h
+++ b/cluster_client.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include "messenger.h"
diff --git a/dump_journal.cpp b/dump_journal.cpp
index 51e82c638..740e69b6a 100644
--- a/dump_journal.cpp
+++ b/dump_journal.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #define _LARGEFILE64_SOURCE
 #include <sys/types.h>
 #include <sys/ioctl.h>
diff --git a/epoll_manager.cpp b/epoll_manager.cpp
index f2c511242..30afaa11e 100644
--- a/epoll_manager.cpp
+++ b/epoll_manager.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <sys/epoll.h>
 #include <sys/poll.h>
 #include <unistd.h>
diff --git a/epoll_manager.h b/epoll_manager.h
index 12c1c6f54..57153e608 100644
--- a/epoll_manager.h
+++ b/epoll_manager.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <map>
diff --git a/etcd_state_client.cpp b/etcd_state_client.cpp
index 156f5603e..310f54116 100644
--- a/etcd_state_client.cpp
+++ b/etcd_state_client.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "osd_ops.h"
 #include "pg_states.h"
 #include "etcd_state_client.h"
diff --git a/etcd_state_client.h b/etcd_state_client.h
index e3001f6d2..c0f0d37f0 100644
--- a/etcd_state_client.h
+++ b/etcd_state_client.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include "osd_id.h"
diff --git a/fio_cluster.cpp b/fio_cluster.cpp
index 02a5e51ef..533ff9986 100644
--- a/fio_cluster.cpp
+++ b/fio_cluster.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 // FIO engine to test cluster I/O
 //
 // Random write:
diff --git a/fio_engine.cpp b/fio_engine.cpp
index 146da4a33..b19e77607 100644
--- a/fio_engine.cpp
+++ b/fio_engine.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 // FIO engine to test Blockstore
 //
 // Initialize storage for tests:
diff --git a/fio_sec_osd.cpp b/fio_sec_osd.cpp
index 7885370b4..16006341f 100644
--- a/fio_sec_osd.cpp
+++ b/fio_sec_osd.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 // FIO engine to test Blockstore through Secondary OSD interface
 //
 // Prepare storage like in fio_engine.cpp, then start OSD with ./osd, then test it
diff --git a/http_client.cpp b/http_client.cpp
index 61b496bab..2ea62896b 100644
--- a/http_client.cpp
+++ b/http_client.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <netinet/tcp.h>
 #include <sys/epoll.h>
 
diff --git a/http_client.h b/http_client.h
index 2a42e0170..ab16a80f2 100644
--- a/http_client.h
+++ b/http_client.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 #include <string>
 #include <vector>
diff --git a/lambda_size.cpp b/lambda_size.cpp
index 1139d149d..1982e4eb3 100644
--- a/lambda_size.cpp
+++ b/lambda_size.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <iostream>
 #include <functional>
 #include <array>
diff --git a/malloc_or_die.h b/malloc_or_die.h
index cb4cb5433..d08b3b3ee 100644
--- a/malloc_or_die.h
+++ b/malloc_or_die.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <malloc.h>
diff --git a/messenger.cpp b/messenger.cpp
index 1730e72df..21d4ac4a4 100644
--- a/messenger.cpp
+++ b/messenger.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/socket.h>
diff --git a/messenger.h b/messenger.h
index 8da717ce3..a81fd4f6b 100644
--- a/messenger.h
+++ b/messenger.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <sys/types.h>
diff --git a/mon/PGUtil.js b/mon/PGUtil.js
index 3c59b6475..e92b500fc 100644
--- a/mon/PGUtil.js
+++ b/mon/PGUtil.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 module.exports = {
     scale_pg_count,
 };
diff --git a/mon/lp-optimizer.js b/mon/lp-optimizer.js
index 9d8bffec5..b046cd392 100644
--- a/mon/lp-optimizer.js
+++ b/mon/lp-optimizer.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 // Data distribution optimizer using linear programming (lp_solve)
 
 const child_process = require('child_process');
diff --git a/mon/make-units.sh b/mon/make-units.sh
index 9ef3bad77..cbbc0ba80 100644
--- a/mon/make-units.sh
+++ b/mon/make-units.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 # Example startup script generator
 # Of course this isn't a production solution yet, this is just for tests
+# Copyright (c) Vitaliy Filippov, 2019+
+# License: MIT
 
 IP=`ip -json a s | jq -r '.[].addr_info[] | select(.broadcast == "10.115.0.255") | .local'`
 
diff --git a/mon/mon-main.js b/mon/mon-main.js
index 8d238231e..929de0953 100644
--- a/mon/mon-main.js
+++ b/mon/mon-main.js
@@ -1,5 +1,8 @@
 #!/usr/bin/node
 
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 const Mon = require('./mon.js');
 
 const options = {};
diff --git a/mon/mon.js b/mon/mon.js
index 0ebbc824d..2b96af0af 100644
--- a/mon/mon.js
+++ b/mon/mon.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 const http = require('http');
 const crypto = require('crypto');
 const os = require('os');
diff --git a/mon/simple-offsets.js b/mon/simple-offsets.js
index c2648696b..0a8ac93ee 100644
--- a/mon/simple-offsets.js
+++ b/mon/simple-offsets.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: MIT
+
 // Simple tool to calculate journal and metadata offsets for a single device
 // Will be replaced by smarter tools in the future
 
diff --git a/mon/stable-stringify.js b/mon/stable-stringify.js
index c1f1b3024..ea91fcdd4 100644
--- a/mon/stable-stringify.js
+++ b/mon/stable-stringify.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: MIT
+
 function stableStringify(obj, opts)
 {
     if (!opts)
diff --git a/mon/test-nonuniform.js b/mon/test-nonuniform.js
index 1a47af353..4bec0fe53 100644
--- a/mon/test-nonuniform.js
+++ b/mon/test-nonuniform.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 // Interesting real-world example coming from Ceph with EC and compression enabled.
 // EC parity chunks can't be compressed as efficiently as data chunks,
 // thus they occupy more space (2.26x more space) in OSD object stores.
diff --git a/mon/test-optimize-undersized.js b/mon/test-optimize-undersized.js
index b9031d13d..9890f9a19 100644
--- a/mon/test-optimize-undersized.js
+++ b/mon/test-optimize-undersized.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 const LPOptimizer = require('./lp-optimizer.js');
 
 const crush_tree = [
diff --git a/mon/test-optimize.js b/mon/test-optimize.js
index 91cda9c46..75aca0bbe 100644
--- a/mon/test-optimize.js
+++ b/mon/test-optimize.js
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 const LPOptimizer = require('./lp-optimizer.js');
 
 const osd_tree = {
diff --git a/msgr_receive.cpp b/msgr_receive.cpp
index dd2d578aa..8cf68b6cd 100644
--- a/msgr_receive.cpp
+++ b/msgr_receive.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "messenger.h"
 
 void osd_messenger_t::read_requests()
diff --git a/msgr_send.cpp b/msgr_send.cpp
index a80c97a7a..54376f6fc 100644
--- a/msgr_send.cpp
+++ b/msgr_send.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "messenger.h"
 
 void osd_messenger_t::outbox_push(osd_op_t *cur_op)
diff --git a/object_id.h b/object_id.h
index 5846ba6a2..c6e972319 100644
--- a/object_id.h
+++ b/object_id.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <stdint.h>
diff --git a/osd.cpp b/osd.cpp
index 3855b11af..a72ca3548 100644
--- a/osd.cpp
+++ b/osd.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <sys/socket.h>
 #include <sys/poll.h>
 #include <netinet/in.h>
diff --git a/osd.h b/osd.h
index b06e8ddfb..3bb95cb88 100644
--- a/osd.h
+++ b/osd.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include <sys/types.h>
diff --git a/osd_cluster.cpp b/osd_cluster.cpp
index 5790206fe..8b5bf4415 100644
--- a/osd_cluster.cpp
+++ b/osd_cluster.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd.h"
 #include "base64.h"
 #include "etcd_state_client.h"
diff --git a/osd_flush.cpp b/osd_flush.cpp
index c12936cfc..b8f252bea 100644
--- a/osd_flush.cpp
+++ b/osd_flush.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd.h"
 
 #define FLUSH_BATCH 512
diff --git a/osd_id.h b/osd_id.h
index fd0c62547..ed3596010 100644
--- a/osd_id.h
+++ b/osd_id.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #define POOL_SCHEME_REPLICATED 1
diff --git a/osd_main.cpp b/osd_main.cpp
index 9f8734ab5..1abd14169 100644
--- a/osd_main.cpp
+++ b/osd_main.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd.h"
 
 #include <signal.h>
diff --git a/osd_ops.cpp b/osd_ops.cpp
index bf983077d..b453bd2d2 100644
--- a/osd_ops.cpp
+++ b/osd_ops.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "osd_ops.h"
 
 const char* osd_op_names[] = {
diff --git a/osd_ops.h b/osd_ops.h
index 7ba5668f2..3a47c1388 100644
--- a/osd_ops.h
+++ b/osd_ops.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include "object_id.h"
diff --git a/osd_peering.cpp b/osd_peering.cpp
index 6a5f50217..b063074da 100644
--- a/osd_peering.cpp
+++ b/osd_peering.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <netinet/tcp.h>
 #include <sys/epoll.h>
 
diff --git a/osd_peering_pg.cpp b/osd_peering_pg.cpp
index 33339c5d7..d844dd58d 100644
--- a/osd_peering_pg.cpp
+++ b/osd_peering_pg.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd_peering_pg.h"
 
 struct obj_ver_role
diff --git a/osd_peering_pg.h b/osd_peering_pg.h
index 701f8e885..f4d07ffee 100644
--- a/osd_peering_pg.h
+++ b/osd_peering_pg.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <map>
 #include <unordered_map>
 #include <vector>
diff --git a/osd_peering_pg_test.cpp b/osd_peering_pg_test.cpp
index 3c8f5461e..27c865965 100644
--- a/osd_peering_pg_test.cpp
+++ b/osd_peering_pg_test.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #define _LARGEFILE64_SOURCE
 
 #include "osd_peering_pg.h"
diff --git a/osd_primary.cpp b/osd_primary.cpp
index 92a56c945..84e853491 100644
--- a/osd_primary.cpp
+++ b/osd_primary.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd_primary.h"
 
 // read: read directly or read paired stripe(s), reconstruct, return
diff --git a/osd_primary.h b/osd_primary.h
index e4faf6c28..38e3a0391 100644
--- a/osd_primary.h
+++ b/osd_primary.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include "osd.h"
diff --git a/osd_primary_subops.cpp b/osd_primary_subops.cpp
index 34756f36d..afdfd48f6 100644
--- a/osd_primary_subops.cpp
+++ b/osd_primary_subops.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd_primary.h"
 
 void osd_t::autosync()
diff --git a/osd_rmw.cpp b/osd_rmw.cpp
index cf644985e..bbf66604e 100644
--- a/osd_rmw.cpp
+++ b/osd_rmw.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <string.h>
 #include <assert.h>
 #include "xor.h"
diff --git a/osd_rmw.h b/osd_rmw.h
index 88207b738..b0b1a97c7 100644
--- a/osd_rmw.h
+++ b/osd_rmw.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include <stdint.h>
diff --git a/osd_rmw_test.cpp b/osd_rmw_test.cpp
index 961146eae..b5c0f8943 100644
--- a/osd_rmw_test.cpp
+++ b/osd_rmw_test.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <string.h>
 #include "osd_rmw.cpp"
 #include "test_pattern.h"
diff --git a/osd_secondary.cpp b/osd_secondary.cpp
index 239d0d5f7..eedd4f4fc 100644
--- a/osd_secondary.cpp
+++ b/osd_secondary.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include "osd.h"
 
 #include "json11/json11.hpp"
diff --git a/osd_test.cpp b/osd_test.cpp
index 437d04b39..227f37eb2 100644
--- a/osd_test.cpp
+++ b/osd_test.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
diff --git a/pg_states.cpp b/pg_states.cpp
index 01a91bd05..9ab1156dd 100644
--- a/pg_states.cpp
+++ b/pg_states.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "pg_states.h"
 
 const int pg_state_bit_count = 14;
diff --git a/pg_states.h b/pg_states.h
index 9f6d8dfa2..dc1d28a78 100644
--- a/pg_states.h
+++ b/pg_states.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 // Placement group states
diff --git a/qemu_driver.c b/qemu_driver.c
index 8a2252ac3..8ff7655e5 100644
--- a/qemu_driver.c
+++ b/qemu_driver.c
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 // QEMU block driver
 
 #define _GNU_SOURCE
diff --git a/qemu_proxy.cpp b/qemu_proxy.cpp
index 9d71865ff..844124fde 100644
--- a/qemu_proxy.cpp
+++ b/qemu_proxy.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 // C-C++ proxy for the QEMU driver
 // (QEMU headers don't compile with g++)
 
diff --git a/qemu_proxy.h b/qemu_proxy.h
index be2fe9108..ea835966f 100644
--- a/qemu_proxy.h
+++ b/qemu_proxy.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #ifndef VITASTOR_QEMU_PROXY_H
 #define VITASTOR_QEMU_PROXY_H
 
diff --git a/ringloop.cpp b/ringloop.cpp
index 19754a728..b18384bb7 100644
--- a/ringloop.cpp
+++ b/ringloop.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include "ringloop.h"
 
 ring_loop_t::ring_loop_t(int qd)
diff --git a/ringloop.h b/ringloop.h
index ed1b915be..21cad183a 100644
--- a/ringloop.h
+++ b/ringloop.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #ifndef _LARGEFILE64_SOURCE
diff --git a/rw_blocking.cpp b/rw_blocking.cpp
index 00a89ac81..0b0e2d237 100644
--- a/rw_blocking.cpp
+++ b/rw_blocking.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <errno.h>
 #include <stdlib.h>
 #include <stdio.h>
diff --git a/rw_blocking.h b/rw_blocking.h
index 1fca26bc3..f7bd78188 100644
--- a/rw_blocking.h
+++ b/rw_blocking.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <unistd.h>
diff --git a/stub_bench.cpp b/stub_bench.cpp
index 668d257d0..c9fd71367 100644
--- a/stub_bench.cpp
+++ b/stub_bench.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 /**
  * Stub benchmarker
  */
diff --git a/stub_osd.cpp b/stub_osd.cpp
index 3b3f230d5..12a201811 100644
--- a/stub_osd.cpp
+++ b/stub_osd.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 /**
  * Stub "OSD" to test & compare network performance with sync read/write and io_uring
  *
diff --git a/stub_uring_osd.cpp b/stub_uring_osd.cpp
index 717be754c..2d8052a04 100644
--- a/stub_uring_osd.cpp
+++ b/stub_uring_osd.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 /**
  * Stub "OSD" implemented on top of osd_messenger to test & compare
  * network performance with sync read/write and io_uring
diff --git a/test.cpp b/test.cpp
index ab651abfd..376b68e19 100644
--- a/test.cpp
+++ b/test.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #define _LARGEFILE64_SOURCE
 #include <sys/types.h>
 #include <sys/ioctl.h>
diff --git a/test_allocator.cpp b/test_allocator.cpp
index 8b1011925..f2bbf01be 100644
--- a/test_allocator.cpp
+++ b/test_allocator.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <stdio.h>
 #include "allocator.h"
 
diff --git a/test_blockstore.cpp b/test_blockstore.cpp
index 4bee1552e..ef46bbbdd 100644
--- a/test_blockstore.cpp
+++ b/test_blockstore.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #include <malloc.h>
 #include "timerfd_interval.h"
 #include "blockstore.h"
diff --git a/test_pattern.h b/test_pattern.h
index 6d74bd186..537602b96 100644
--- a/test_pattern.h
+++ b/test_pattern.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 (see README.md for details)
+
 #pragma once
 
 #include <assert.h>
diff --git a/timerfd_interval.cpp b/timerfd_interval.cpp
index f84a40231..c433afc16 100644
--- a/timerfd_interval.cpp
+++ b/timerfd_interval.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <sys/timerfd.h>
 #include <sys/poll.h>
 #include <unistd.h>
diff --git a/timerfd_interval.h b/timerfd_interval.h
index 96e60ec7d..51fc43d81 100644
--- a/timerfd_interval.h
+++ b/timerfd_interval.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include "ringloop.h"
diff --git a/timerfd_manager.cpp b/timerfd_manager.cpp
index fdd20edd5..0977114b6 100644
--- a/timerfd_manager.cpp
+++ b/timerfd_manager.cpp
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #include <sys/timerfd.h>
 #include <sys/poll.h>
 #include <sys/epoll.h>
diff --git a/timerfd_manager.h b/timerfd_manager.h
index 9615a2ff0..e36689ae1 100644
--- a/timerfd_manager.h
+++ b/timerfd_manager.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <time.h>
diff --git a/xor.h b/xor.h
index c9d7ec721..2b8a32fab 100644
--- a/xor.h
+++ b/xor.h
@@ -1,3 +1,6 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.0 or GNU GPL-2.0+ (see README.md for details)
+
 #pragma once
 
 #include <stdint.h>