MDEV-30069 fixup: Do not truncate files on recovery

recv_sys_t::recover_deferred(): If the file has been determined
to be large enough, skip the call to os_file_set_size(), which
would use the current value of FSP_SIZE, which during a multi-batch
recovery can be smaller than the actual file size.

os_file_io(): Also display the file offset in the warning message about
partial I/O.

storage/innobase/log/log0recv.cc

@@ -998,6 +998,7 @@ bool recv_sys_t::recover_deferred(recv_sys_t::map::iterator &p,
         {
           space->size= node->size= n_pages;
           space->set_committed_size();
+          goto size_set;
         }
       }
       if (!os_file_set_size(node->name, node->handle,
@@ -1007,6 +1008,7 @@ bool recv_sys_t::recover_deferred(recv_sys_t::map::iterator &p,
         space->release();
         goto release_and_fail;
       }
+    size_set:
       node->deferred= false;
       space->release();
       it->second.space= space;

storage/innobase/os/os0file.cc

@@ -2770,10 +2770,11 @@ os_file_io(
 
 		if (type.type != IORequest::READ_MAYBE_PARTIAL) {
 			sql_print_warning("InnoDB: %zu bytes should have been"
-					  " %s from %s, but got only %zd."
+					  " %s at %llu from %s,"
+					  " but got only %zd."
 					  " Retrying.",
 					  n, type.is_read()
-					  ? "read" : "written",
+					  ? "read" : "written", offset,
 					  type.node
 					  ? type.node->name
 					  : "(unknown file)", bytes_returned);