meta: don't error out on migrated DB with old version

Fixes

    error        shard/control.go:17        metabase failure, switching mode        {"shard_id": "XxhmeQZZRSQfDGfiCYo9mB", "stage": "init", "mode": "READ_ONLY", "error": "migrating from 2 to 3 version failed, consider database resync: graveyard value with unexpected 72 length"}

Signed-off-by: Roman Khimov <[email protected]>

CHANGELOG.md

@@ -6,6 +6,7 @@ Changelog for NeoFS Node
 ### Added
 
 ### Fixed
+- Incomplete metabase migration to version 3 leading to node start failure (#3048)
 
 ### Changed
 

pkg/local_object_storage/metabase/version.go

@@ -95,7 +95,11 @@ func migrateFrom2Version(db *DB, tx *bbolt.Tx) error {
 	c := bkt.Cursor()
 
 	for k, v := c.First(); k != nil; k, v = c.Next() {
-		if l := len(v); l != addressKeySize {
+		l := len(v)
+		if l == addressKeySize+8 { // Because of a 0.44.0 bug we can have a migrated DB with version 2.
+			continue
+		}
+		if l != addressKeySize {
 			return fmt.Errorf("graveyard value with unexpected %d length", l)
 		}