initial data set size:
412	/home/galera/var/datadir/aria_log.00000001
4	/home/galera/var/datadir/aria_log_control
56	/home/galera/var/datadir/ddl_recovery.log
8	/home/galera/var/datadir/g5.err
12288	/home/galera/var/datadir/ibdata1
20971524	/home/galera/var/datadir/ib_logfile0
12288	/home/galera/var/datadir/ibtmp1
0	/home/galera/var/datadir/multi-master.info
3876	/home/galera/var/datadir/mysql
4	/home/galera/var/datadir/mysql_upgrade_info
8	/home/galera/var/datadir/performance_schema
12262800	/home/galera/var/datadir/sbt
600	/home/galera/var/datadir/sys
8	/home/galera/var/datadir/test
10240	/home/galera/var/datadir/undo001
10240	/home/galera/var/datadir/undo002
10240	/home/galera/var/datadir/undo003

after running tpcc.lua at 48 threads:
412	/home/galera/var/datadir/aria_log.00000001
4	/home/galera/var/datadir/aria_log_control
56	/home/galera/var/datadir/ddl_recovery.log
8	/home/galera/var/datadir/g5.err
12288	/home/galera/var/datadir/ibdata1
20971524	/home/galera/var/datadir/ib_logfile0
12288	/home/galera/var/datadir/ibtmp1
0	/home/galera/var/datadir/multi-master.info
3876	/home/galera/var/datadir/mysql
4	/home/galera/var/datadir/mysql_upgrade_info
8	/home/galera/var/datadir/performance_schema
17294020	/home/galera/var/datadir/sbt
600	/home/galera/var/datadir/sys
8	/home/galera/var/datadir/test
10244	/home/galera/var/datadir/undo001
10244	/home/galera/var/datadir/undo002
10244	/home/galera/var/datadir/undo003

