Support chunked resharding in blockstores

2026-01-25 01:56:29 +03:00
parent 233d2b2a09
commit 2b801a7ffa
8 changed files with 262 additions and 77 deletions
@@ -183,8 +183,11 @@ public:
    // Update configuration
    virtual void parse_config(blockstore_config_t & config) = 0;

-    // Reshard database for a pool
-    virtual void reshard(pool_id_t pool, uint32_t pg_count, uint32_t pg_stripe_size) = 0;
+    // Reshard database for a pool in chunks
+    // MUST be called only when nobody makes any modifications to the DB for this pool
+    virtual void* reshard_start(pool_id_t pool, uint32_t pg_count, uint32_t pg_stripe_size, uint64_t chunk_limit) = 0;
+    virtual bool reshard_continue(void *reshard_state, uint64_t chunk_limit) = 0;
+    virtual void reshard_abort(void *reshard_state) = 0;

    // Event loop
    virtual void loop() = 0;