InnoDB: Corrupted page of datafile './ibdata1' could not be found in the doublewrite buffer.

./mtr encryption.tempfiles,cbc,innodb,none  encryption.innodb-checksum-algorithm  --mysqld=--innodb-thread-concurrency=32

encryption.tempfiles 'cbc,innodb,none'   [ pass ]    986

MTR's internal check of the test case 'encryption.tempfiles' failed.

This means that the test case does not preserve the state that existed

before the test case was executed.  Most likely the test case did not

do a proper clean-up. It could also be caused by the previous test run

by this thread, if the server wasn't restarted.

This is the diff of the states of the servers before and after the

test case was executed:

mysqltest: Logging to '/d1/git/10.4/mysql-test/var/tmp/check-mysqld_1.log'.

mysqltest: Results saved in '/d1/git/10.4/mysql-test/var/tmp/check-mysqld_1.result'.

mysqltest: Connecting to server localhost:16000 (socket /d1/git/10.4/mysql-test/var/tmp/mysqld.1.sock) as 'root', connection 'default', attempt 0 ...

mysqltest: ... Connected.

mysqltest: Start processing test commands from './include/check-testcase.test' ...

mysqltest: ... Done processing test commands.

--- /d1/git/10.4/mysql-test/var/tmp/check-mysqld_1.result	2020-11-27 15:38:06.776000000 +0000

+++ /d1/git/10.4/mysql-test/var/tmp/check-mysqld_1.reject	2020-11-27 15:38:08.060000000 +0000

@@ -362,7 +362,7 @@

 INNODB_TABLE_LOCKS	ON

 INNODB_TEMP_DATA_FILE_PATH	ibtmp1:12M:autoextend

 INNODB_THREAD_CONCURRENCY	32

-INNODB_THREAD_SLEEP_DELAY	10000

+INNODB_THREAD_SLEEP_DELAY	4

 INNODB_TMPDIR	

 INNODB_TRX_PURGE_VIEW_UPDATE_ONLY_DEBUG	OFF

 INNODB_TRX_RSEG_N_SLOTS_DEBUG	0

mysqltest: Result length mismatch

not ok

encryption.innodb-checksum-algorithm '32k,cbc,innodb' [ fail ]

        Test ended at 2020-11-27 15:38:13

CURRENT_TEST: encryption.innodb-checksum-algorithm

mysqltest: At line 4: query 'SET @saved_file_per_table = @@global.innodb_file_per_table' failed: 1193: Unknown system variable 'innodb_file_per_table'

The result from queries just before the failure was:

SET @saved_file_per_table = @@global.innodb_file_per_table;

2020-11-27 15:38:11 0 [ERROR] InnoDB: Corrupted page [page id: space=0, page number=0] of datafile './ibdata1' could not be found in the doublewrite buffer.

2020-11-27 15:38:11 0 [ERROR] InnoDB: Plugin initialization aborted at srv0start.cc[1605] with error Data structure corruption

2020-11-27 15:38:12 0 [Note] InnoDB: Starting shutdown...

2020-11-27 15:38:12 0 [ERROR] Plugin 'InnoDB' init function returned error.

2020-11-27 15:38:12 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.