[root@holland default]# grep backups-to-keep /etc/holland/backupsets/default.conf
backups-to-keep = 1

[root@holland default]# du -sch *
48M	20100623_044729
48M	20100623_044759
95M	total

[root@holland default]# tail -n50 /var/log/holland/holland.log | grep -B4 "Ending backup run"
2010-06-23 04:47:42,140 [INFO] Executing: /usr/bin/mysqldump --defaults-file=/var/spool/holland/default/20100623_044729/my.cnf --max-allowed-packet=256M --lock-tables world
2010-06-23 04:47:42,189 [INFO] Final on-disk backup size 46.84MB 22.96% of estimated size 204.06MB
2010-06-23 04:47:42,191 [INFO] Backup completed in 12.83 seconds
2010-06-23 04:47:42,193 [INFO] Released lock /etc/holland/backupsets/default.conf
2010-06-23 04:47:42,193 [INFO] ---> Ending backup run <---
--
2010-06-23 04:48:12,530 [INFO] Executing: /usr/bin/mysqldump --defaults-file=/var/spool/holland/default/20100623_044759/my.cnf --max-allowed-packet=256M --lock-tables world
2010-06-23 04:48:12,607 [INFO] Final on-disk backup size 46.84MB 22.96% of estimated size 204.06MB
2010-06-23 04:48:12,609 [INFO] Backup completed in 12.94 seconds
2010-06-23 04:48:12,611 [INFO] Released lock /etc/holland/backupsets/default.conf
2010-06-23 04:48:12,612 [INFO] ---> Ending backup run <---