MariaDB [tt]> show create table t1\G

*************************** 1. row ***************************

       Table: t1

Create Table: CREATE TABLE `t1` (

  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,

  `msg` varchar(100) DEFAULT NULL,

  UNIQUE KEY `id` (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=34209256 DEFAULT CHARSET=latin1 `PAGE_COMPRESSED`='ON'

1 row in set (0.005 sec)

+--------------+------------+------------+

| TABLE_SCHEMA | TABLE_NAME | ROW_FORMAT |

+--------------+------------+------------+

| tt           | t1         | Dynamic    |

+--------------+------------+------------+

MariaDB [tt]> show global variables like '%compression%';

+------------------------------------------+------------------+

| Variable_name                            | Value            |

+------------------------------------------+------------------+

| column_compression_threshold             | 100              |

| column_compression_zlib_level            | 6                |

| column_compression_zlib_strategy         | DEFAULT_STRATEGY |

| column_compression_zlib_wrap             | OFF              |

| innodb_compression_algorithm             | zlib             |

| innodb_compression_default               | ON               |

| innodb_compression_failure_threshold_pct | 5                |

| innodb_compression_level                 | 1                |

| innodb_compression_pad_pct_max           | 50               |

+------------------------------------------+------------------+

9 rows in set (0.001 sec)

$ ls -lrth /var/lib/mysql/tt/t1.ibd

2.1G /var/lib/mysql/tt/t1.ibd

$ du -hs --block-size=1 /var/lib/mysql/tt/t1.ibd

1098792960	/var/lib/mysql/tt/t1.ibd

$ du -hs /var/lib/mysql/tt/t1.ibd

1.1G	/var/lib/mysql/tt/t1.ibd

mariabackup --backup --target-dir=/home/vagrant/backup/ -u root -p'xxxx'

.

[00] 2021-05-19 20:08:13 completed OK!

$ ls -la /home/vagrant/backup/tt/t1.ibd

-rw-r-----. 1 root root 2231369728 May 19 20:08 /home/vagrant/backup/tt/t1.ibd

$ du -hs --block-size=1 /home/vagrant/backup/tt/t1.ibd

2214154240	/home/vagrant/backup/tt/t1.ibd

$ du -hs /home/vagrant/backup/tt/t1.ibd

2.1G	/home/vagrant/backup/tt/t1.ibd