MDEV-34221 Errors about checksum mismatch on crash recovery are confusing

- InnoDB should avoid printing the error message before
restoring the first page from doublewrite buffer.

mysql-test/suite/innodb/r/undo_space_dblwr.result

@@ -12,7 +12,7 @@ set global innodb_fil_make_page_dirty_debug = 1;
 SET GLOBAL innodb_buf_flush_list_now = 1;
 # Kill the server
 # restart: --debug_dbug=+d,ib_log_checkpoint_avoid_hard --innodb_flush_sync=0
-FOUND 1 /Checksum mismatch in the first page of file/ in mysqld.1.err
+FOUND 1 /Restoring page \[page id: space=1, page number=0\] of datafile '.*undo001' from the doublewrite buffer./ in mysqld.1.err
 check table t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK

mysql-test/suite/innodb/t/undo_space_dblwr.test

@@ -39,7 +39,7 @@ EOF
 
 --source include/start_mysqld.inc
 let SEARCH_FILE= $MYSQLTEST_VARDIR/log/mysqld.1.err;
-let SEARCH_PATTERN= Checksum mismatch in the first page of file;
+let SEARCH_PATTERN= Restoring page \[page id: space=1, page number=0\] of datafile '.*undo001' from the doublewrite buffer.;
 --source include/search_pattern_in_file.inc
 
 check table t1;

storage/innobase/srv/srv0start.cc

@@ -554,7 +554,6 @@ static ulint srv_undo_tablespace_open(bool create, const char* name, ulint i)
     fsp_flags= mach_read_from_4(FSP_HEADER_OFFSET + FSP_SPACE_FLAGS + page);
     if (buf_page_is_corrupted(false, page, fsp_flags))
     {
-      ib::error() << "Checksum mismatch in the first page of file " << name;
       if (recv_sys.dblwr.restore_first_page(space_id, name, fh))
         goto err_exit;
     }