Make it also build with GCC 8 and on Debian Buster

README.md

@@ -291,7 +291,7 @@ Vitastor with single-thread NBD on the same hardware:
   move PGs out of "starting" state if you have at least around ~500 PGs or so. The custom build
   will be unnecessary when etcd merges the fix: https://github.com/etcd-io/etcd/pull/12402.
 - Install node.js 10 or newer.
-- Install gcc and g++ 9.x or later.
+- Install gcc and g++ 8.x or later.
 - Clone https://yourcmc.ru/git/vitalif/vitastor/ with submodules.
 - Install QEMU 2.0+, get its source, begin to build it, stop the build and copy headers:
    - `<qemu>/include` &rarr; `<vitastor>/qemu/include`

cluster_client.cpp

@@ -488,7 +488,7 @@ void cluster_client_t::slice_rw(cluster_op_t *op)
         uint64_t begin = (op->offset < stripe ? stripe : op->offset);
         uint64_t end = (op->offset + op->len) > (stripe + pg_block_size)
             ? (stripe + pg_block_size) : (op->offset + op->len);
-        op->parts[i] = {
+        op->parts[i] = (cluster_op_part_t){
             .parent = op,
             .offset = begin,
             .len = (uint32_t)(end - begin),
@@ -533,7 +533,7 @@ bool cluster_client_t::try_send(cluster_op_t *op, cluster_op_part_t *part)
             part->osd_num = primary_osd;
             part->sent = true;
             op->sent_count++;
-            part->op = {
+            part->op = (osd_op_t){
                 .op_type = OSD_OP_OUT,
                 .peer_fd = peer_fd,
                 .req = { .rw = {
@@ -694,7 +694,7 @@ void cluster_client_t::send_sync(cluster_op_t *op, cluster_op_part_t *part)
     assert(peer_it != msgr.osd_peer_fds.end());
     part->sent = true;
     op->sent_count++;
-    part->op = {
+    part->op = (osd_op_t){
         .op_type = OSD_OP_OUT,
         .peer_fd = peer_it->second,
         .req = {

debian/compat

@@ -0,0 +1 @@
+13

debian/control

@@ -2,7 +2,7 @@ Source: vitastor
 Section: admin
 Priority: optional
 Maintainer: Vitaliy Filippov <vitalif@yourcmc.ru>
-Build-Depends: debhelper-compat (= 13), liburing-dev (>= 0.6), g++ (>= 9), libstdc++6 (>= 9), linux-libc-dev, libgoogle-perftools-dev
+Build-Depends: debhelper, liburing-dev (>= 0.6), g++ (>= 8), libstdc++6 (>= 8), linux-libc-dev, libgoogle-perftools-dev
 Standards-Version: 4.5.0
 Homepage: https://vitastor.io/
 Rules-Requires-Root: no

messenger.cpp

@@ -116,7 +116,7 @@ void osd_messenger_t::try_connect_peer_addr(osd_num_t peer_osd, const char *peer
             return;
         });
     }
-    clients[peer_fd] = new osd_client_t({
+    clients[peer_fd] = new osd_client_t((osd_client_t){
         .peer_addr = addr,
         .peer_port = peer_port,
         .peer_fd = peer_fd,
@@ -233,7 +233,7 @@ void osd_messenger_t::check_peer_config(osd_client_t *cl)
     osd_op_t *op = new osd_op_t();
     op->op_type = OSD_OP_OUT;
     op->peer_fd = cl->peer_fd;
-    op->req = {
+    op->req = (osd_any_op_t){
         .show_conf = {
             .header = {
                 .magic = SECONDARY_OSD_OP_MAGIC,
@@ -402,7 +402,7 @@ void osd_messenger_t::accept_connections(int listen_fd)
         fcntl(peer_fd, F_SETFL, fcntl(peer_fd, F_GETFL, 0) | O_NONBLOCK);
         int one = 1;
         setsockopt(peer_fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
-        clients[peer_fd] = new osd_client_t({
+        clients[peer_fd] = new osd_client_t((osd_client_t){
             .peer_addr = addr,
             .peer_port = ntohs(addr.sin_port),
             .peer_fd = peer_fd,

osd_flush.cpp

@@ -166,7 +166,7 @@ void osd_t::submit_flush_op(pool_id_t pool_id, pg_num_t pg_num, pg_flush_batch_t
     {
         // local
         clock_gettime(CLOCK_REALTIME, &op->tv_begin);
-        op->bs_op = new blockstore_op_t({
+        op->bs_op = new blockstore_op_t((blockstore_op_t){
             .opcode = (uint64_t)(rollback ? BS_OP_ROLLBACK : BS_OP_STABLE),
             .callback = [this, op, pool_id, pg_num, fb](blockstore_op_t *bs_op)
             {
@@ -188,7 +188,7 @@ void osd_t::submit_flush_op(pool_id_t pool_id, pg_num_t pg_num, pg_flush_batch_t
         op->op_type = OSD_OP_OUT;
         op->iov.push_back(op->buf, count * sizeof(obj_ver_id));
         op->peer_fd = peer_fd;
-        op->req = {
+        op->req = (osd_any_op_t){
             .sec_stab = {
                 .header = {
                     .magic = SECONDARY_OSD_OP_MAGIC,
@@ -246,7 +246,7 @@ void osd_t::submit_recovery_op(osd_recovery_op_t *op)
 {
     op->osd_op = new osd_op_t();
     op->osd_op->op_type = OSD_OP_OUT;
-    op->osd_op->req = {
+    op->osd_op->req = (osd_any_op_t){
         .rw = {
             .header = {
                 .magic = SECONDARY_OSD_OP_MAGIC,

osd_peering.cpp

@@ -307,7 +307,7 @@ void osd_t::submit_sync_and_list_subop(osd_num_t role_osd, pg_peering_state_t *p
         osd_op_t *op = new osd_op_t();
         op->op_type = OSD_OP_OUT;
         op->peer_fd = cl->peer_fd;
-        op->req = {
+        op->req = (osd_any_op_t){
             .sec_sync = {
                 .header = {
                     .magic = SECONDARY_OSD_OP_MAGIC,
@@ -382,7 +382,7 @@ void osd_t::submit_list_subop(osd_num_t role_osd, pg_peering_state_t *ps)
         osd_op_t *op = new osd_op_t();
         op->op_type = OSD_OP_OUT;
         op->peer_fd = c_cli.osd_peer_fds[role_osd];
-        op->req = {
+        op->req = (osd_any_op_t){
             .sec_list = {
                 .header = {
                     .magic = SECONDARY_OSD_OP_MAGIC,

osd_primary_subops.cpp

@@ -11,7 +11,7 @@ void osd_t::autosync()
     {
         autosync_op = new osd_op_t();
         autosync_op->op_type = OSD_OP_IN;
-        autosync_op->req = {
+        autosync_op->req = (osd_any_op_t){
             .sync = {
                 .header = {
                     .magic = SECONDARY_OSD_OP_MAGIC,
@@ -510,7 +510,7 @@ void osd_t::submit_primary_stab_subops(osd_op_t *cur_op)
         {
             clock_gettime(CLOCK_REALTIME, &subops[i].tv_begin);
             subops[i].op_type = (uint64_t)cur_op;
-            subops[i].bs_op = new blockstore_op_t({
+            subops[i].bs_op = new blockstore_op_t((blockstore_op_t){
                 .opcode = BS_OP_STABLE,
                 .callback = [subop = &subops[i], this](blockstore_op_t *bs_subop)
                 {

rm_inode.cpp

@@ -170,7 +170,7 @@ public:
         osd_op_t *op = new osd_op_t();
         op->op_type = OSD_OP_OUT;
         op->peer_fd = cli->msgr.osd_peer_fds[cur_list->osd_num];
-        op->req = {
+        op->req = (osd_any_op_t){
             .sec_list = {
                 .header = {
                     .magic = SECONDARY_OSD_OP_MAGIC,
@@ -233,7 +233,7 @@ public:
             osd_op_t *op = new osd_op_t();
             op->op_type = OSD_OP_OUT;
             op->peer_fd = cli->msgr.osd_peer_fds[cur_list->osd_num];
-            op->req = {
+            op->req = (osd_any_op_t){
                 .rw = {
                     .header = {
                         .magic = SECONDARY_OSD_OP_MAGIC,