namely, restart_mysqld_with_option.inc and kill_and_restart_mysqld.inc -
use restart_mysqld.inc instead.
Also remove innodb_wl6501_crash_stripped.inc that wasn't used anywhere.
As noted in MDEV-8841, any test that kills the server must issue
FLUSH TABLES, so that tables of crash-unsafe storage engines will
not be corrupted. Consistently issue this statement after any
call mtr.add_suppression() calls.
Also, do not invoke shutdown_server directly, but use helpers instead.
Most notably, this includes MDEV-11623, which includes a fix and
an upgrade procedure for the InnoDB file format incompatibility
that is present in MariaDB Server 10.1.0 through 10.1.20.
In other words, this merge should address
MDEV-11202 InnoDB 10.1 -> 10.2 migration does not work
contains a bad and a good copy
Clean up the InnoDB doublewrite buffer code.
buf_dblwr_init_or_load_pages(): Do not add empty pages to the buffer.
buf_dblwr_process(): Do consider changes to pages that are all zero.
Do not abort when finding a corrupted copy of a page in the doublewrite
buffer, because there could be multiple copies in the doublewrite buffer,
and only one of them needs to be good.
if XA PREPARE transactions hold explicit locks.
innobase_shutdown_for_mysql(): Call trx_sys_close() before lock_sys_close()
(and dict_close()) so that trx_free_prepared() will see all locks intact.
RB: 8561
Reviewed-by: Vasil Dimov <vasil.dimov@oracle.com>
