mariabackup does not preserve "holes punched" for tables with page_compressed=1

[openxs@fc23 maria10.1]$ bin/mysql --socket=/tmp/mariadb.sock -uroot test

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 3

Server version: 10.1.24-MariaDB Source distribution

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [test]> show variables like 'innodb_use%';

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

| Variable_name                             | Value |

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

| innodb_use_atomic_writes                  | OFF   |

| innodb_use_fallocate                      | ON    |

| innodb_use_global_flush_log_at_trx_commit | ON    |

| innodb_use_mtflush                        | OFF   |

| innodb_use_native_aio                     | ON    |

| innodb_use_stacktrace                     | OFF   |

| innodb_use_sys_malloc                     | ON    |

| innodb_use_trim                           | ON    |

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

8 rows in set (0.00 sec)

MariaDB [test]> show variables like 'innodb_file%';

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

| Variable_name            | Value     |

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

| innodb_file_format       | Barracuda |

| innodb_file_format_check | ON        |

| innodb_file_format_max   | Barracuda |

| innodb_file_per_table    | ON        |

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

4 rows in set (0.00 sec)

MariaDB [test]> create table t1(id int auto_increment primary key, c1 varchar(200)) engine=InnoDB page_compressed=1;

Query OK, 0 rows affected (0.20 sec)

MariaDB [test]> insert into t1(c1) values (repeat('a', 200));

Query OK, 1 row affected (0.04 sec)

MariaDB [test]> insert into t1(c1) values (repeat('b', 200));                   

Query OK, 1 row affected (0.04 sec)

MariaDB [test]> insert into t1(c1) select c1 from t1;                           

Query OK, 2 rows affected (0.04 sec)

Records: 2  Duplicates: 0  Warnings: 0

MariaDB [test]> insert into t1(c1) select c1 from t1;

Query OK, 4 rows affected (0.03 sec)

Records: 4  Duplicates: 0  Warnings: 0

...

MariaDB [test]> insert into t1(c1) select c1 from t1;

Query OK, 1048576 rows affected (40.24 sec)

Records: 1048576  Duplicates: 0  Warnings: 0

MariaDB [test]> show table status like 't1'\G

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

           Name: t1

         Engine: InnoDB

        Version: 10

     Row_format: Dynamic

           Rows: 2014585

 Avg_row_length: 249

    Data_length: 502218752

Max_data_length: 0

   Index_length: 0

      Data_free: 5242880

 Auto_increment: 2490316

    Create_time: 2017-06-07 10:37:19

    Update_time: NULL

     Check_time: NULL

      Collation: latin1_swedish_ci

       Checksum: NULL

 Create_options: `page_compressed`=1

        Comment:

1 row in set (0.00 sec)

MariaDB [test]> show create table t1\G

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

       Table: t1

Create Table: CREATE TABLE `t1` (

  `id` int(11) NOT NULL AUTO_INCREMENT,

  `c1` varchar(200) DEFAULT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=2490316 DEFAULT CHARSET=latin1 `page_compressed`=1

1 row in set (0.00 sec)

MariaDB [test]> show variables like 'innodb_comp%';                             +------------------------------------------+-------+

| Variable_name                            | Value |

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

| innodb_compression_algorithm             | zlib  |

| innodb_compression_failure_threshold_pct | 5     |

| innodb_compression_level                 | 6     |

| innodb_compression_pad_pct_max           | 50    |

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

4 rows in set (0.01 sec)

MariaDB [test]> show status like 'innodb_page%';

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

| Variable_name                          | Value     |

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

| Innodb_page_size                       | 16384     |

| Innodb_pages_created                   | 32929     |

| Innodb_pages_read                      | 19731     |

| Innodb_pages0_read                     | 4         |

| Innodb_pages_written                   | 33225     |

| Innodb_page_compression_saved          | 385253376 |

| Innodb_page_compression_trim_sect512   | 0         |

| Innodb_page_compression_trim_sect1024  | 0         |

| Innodb_page_compression_trim_sect2048  | 0         |

| Innodb_page_compression_trim_sect4096  | 94056     |

| Innodb_page_compression_trim_sect8192  | 0         |

| Innodb_page_compression_trim_sect16384 | 0         |

| Innodb_page_compression_trim_sect32768 | 0         |

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

13 rows in set (0.00 sec)

MariaDB [test]> \! ls -ls data/test

total 125992

     4 -rw-rw----. 1 openxs openxs        65 Jun  7 10:14 db.opt

     4 -rw-rw----. 1 openxs openxs      1168 Jun  7 10:37 t1.frm

125984 -rw-rw----. 1 openxs openxs 528482304 Jun  7 10:41 t1.ibd

[openxs@fc23 maria10.1]$ bin/mariabackup --no-defaults --port=3306 --socket=/tmp/mariadb.sock --innodb_use_fallocate=ON --innodb_use_trim=ON --innodb_file_format=Barracuda --user=root --backup --target-dir=/home/openxs/backup

...

xtrabackup: Transaction log of lsn (828462583) to (828462583) was copied.

170607 11:08:02 completed OK!

[openxs@fc23 maria10.1]$ ls -ls /home/openxs/backup/test/

total 516108

     4 -rw-rw----. 1 openxs openxs        65 Jun  7 11:07 db.opt

     4 -rw-rw----. 1 openxs openxs      1168 Jun  7 11:07 t1.frm

516100 -rw-rw----. 1 openxs openxs 528482304 Jun  7 11:07 t1.ibd

[openxs@fc23 maria10.1]$ du -hc  /home/openxs/backup/test/*.ibd

505M    /home/openxs/backup/test/t1.ibd

505M    total

[openxs@fc23 maria10.1]$ du -hc data/test/*.ibd

124M    data/test/t1.ibd

124M    total