Fix vitastor-disk prepare and param validation

src/blockstore/blockstore_heap.cpp

@@ -162,6 +162,8 @@ blockstore_heap_t::blockstore_heap_t(blockstore_disk_t *dsk, uint8_t *buffer_are
 {
     assert(target_block_free_space < dsk->meta_block_size);
     assert(dsk->meta_block_size < 32768);
+    assert(dsk->meta_area_size > 0);
+    assert(dsk->journal_len > 0);
     assert(sizeof(heap_object_t) < sizeof(heap_write_t));
     meta_alloc = new multilist_index_t(meta_block_count, 1 + dsk->meta_block_size/MIN_ALLOC, 0);
     block_info.resize(meta_block_count);

src/blockstore/blockstore_impl.cpp

@@ -30,6 +30,10 @@ blockstore_impl_t::blockstore_impl_t(blockstore_config_t & config, ring_loop_i *
     }
     meta_superblock = (uint8_t*)memalign_or_die(MEM_ALIGNMENT, dsk.meta_block_size);
     memset(meta_superblock, 0, dsk.meta_block_size);
+}
+
+void blockstore_impl_t::init()
+{
     flusher = new journal_flusher_t(this);
     if (dsk.inmemory_journal)
     {
@@ -40,11 +44,12 @@ blockstore_impl_t::blockstore_impl_t(blockstore_config_t & config, ring_loop_i *
 
 blockstore_impl_t::~blockstore_impl_t()
 {
+    if (flusher)
+        delete flusher;
     if (heap)
         delete heap;
     if (buffer_area)
         free(buffer_area);
-    delete flusher;
     if (meta_superblock)
         free(meta_superblock);
     if (zero_object)

src/blockstore/blockstore_impl.h

@@ -146,6 +146,7 @@ public:
     int metadata_buf_size;
     blockstore_init_meta* metadata_init_reader;
 
+    void init();
     void check_wait(blockstore_op_t *op);
     void init_op(blockstore_op_t *op);
 

src/blockstore/blockstore_init.cpp

@@ -147,7 +147,6 @@ resume_1:
             );
             exit(1);
         }
-        bs->heap->set_compacted_lsn(hdr->compacted_lsn);
         if (bs->dsk.meta_format != hdr->version)
         {
             bs->dsk.meta_format = hdr->version;
@@ -155,6 +154,8 @@ resume_1:
         }
         bs->dsk.check_lengths();
     }
+    bs->init();
+    bs->heap->set_compacted_lsn(((blockstore_meta_header_v3_t *)bs->meta_superblock)->compacted_lsn);
     if (bs->dsk.inmemory_journal)
     {
         // Read buffer area

src/disk_tool/disk_tool_prepare.cpp

@@ -118,15 +118,18 @@ int disk_tool_t::prepare_one(std::map<std::string, std::string> options, int is_
     try
     {
         dsk.parse_config(options);
-        // Set all offsets to 4096 to calculate metadata size with excess
+        // Calculate metadata sizes (with excess)
         dsk.journal_offset = 4096;
-        dsk.meta_offset = 4096;
+        dsk.meta_offset = 4096 + (dsk.meta_device == dsk.journal_device ? dsk.cfg_journal_size : 0);
-        dsk.data_offset = 4096;
+        dsk.data_offset = 4096 + (dsk.data_device == dsk.meta_device && new_meta_len ? new_meta_len : 0) +
+            (dsk.data_device == dsk.journal_device ? dsk.cfg_journal_size : 0);
         dsk.data_io = dsk.meta_io = dsk.journal_io = (options["io"] == "cached" ? "cached" : "direct");
         dsk.open_data();
         dsk.open_meta();
         dsk.open_journal();
         dsk.calc_lengths();
+        dsk.data_offset += (new_meta_len ? 0 : (dsk.meta_format == BLOCKSTORE_META_FORMAT_HEAP ? dsk.min_meta_len*2 : dsk.min_meta_len));
+        dsk.meta_area_size = (dsk.data_device == dsk.meta_device ? dsk.data_offset : dsk.meta_device_size) - dsk.meta_offset;
         sb = json11::Json::object {
             { "meta_format", options["meta_format"] },
             { "data_device", options["data_device"] },
@@ -141,7 +144,7 @@ int disk_tool_t::prepare_one(std::map<std::string, std::string> options, int is_
             { "disable_device_lock", dsk.disable_flock },
             { "journal_offset", 4096 },
             { "meta_offset", dsk.meta_offset },
-            { "data_offset", dsk.data_offset + (new_meta_len ? 0 : (dsk.meta_format == BLOCKSTORE_META_FORMAT_HEAP ? dsk.min_meta_len*2 : dsk.min_meta_len)) },
+            { "data_offset", dsk.data_offset },
             { "journal_no_same_sector_overwrites", !is_hdd || is_hybrid },
             { "journal_sector_buffer_count", 1024 },
             { "disable_data_fsync", json_is_true(options["disable_data_fsync"]) },