**Reported in Launchpad by robzor last update 11-05-2017 07:26:06

MariaDB 10.1.22

1. xtrabackup --version
   xtrabackup version 2.4.6 based on MySQL server 5.7.13 Linux (x86_64) (revision id: 8ec05b7)

The table is not corrupt as far as I can see. Queries work as usual. But xtrabackup crasher every time on this table.

xtrabackup --user=xxx --password=xxx --backup --target-dir=/xxx
....
170405 19:14:42 [01] Copying ./xxx/crawler_shop_settings.ibd to /xxx/xxx/crawler_shop_settings.ibd
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
170405 19:14:43 >> log scanned up to (7413012351299)
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Database page corruption detected at page 1, retrying...
[01] xtrabackup: Error: failed to read page after 10 retries. File ./xxx/crawler_shop_settings.ibd seems to be corrupted.
[01] xtrabackup: Error: xtrabackup_copy_datafile() failed.
[01] xtrabackup: Error: failed to copy datafile.

SHOW CREATE TABLE crawler_shop_settings:

CREATE TABLE `crawler_shop_settings` (
`merchant_id` int(11) NOT NULL DEFAULT '0',
`status` enum('new','active','inactive','testing') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'new',
`shop_system` enum('unknown','igetweb','readyplanet','tarad','weloveshopping','weloveshopping2','weloveshopping3','lnwshop','shopup','ran4u') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'unknown',
`shop_system_default` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`use_shop_system_default` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`shop_speed` enum('fast','slow') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'slow',
`update_crawl` enum('off','daily','weekly') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'off',
`deep_crawl` enum('off','daily','weekly') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'off',
`last_update` datetime DEFAULT NULL,
`comment` text COLLATE utf8_unicode_ci,
`encoding` enum('utf8','tis') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'tis',
`force_encoding_to` enum('none','tis_to_utf8') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'none',
`accept_cookies` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`extended_crawl_timeout` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`prices_include_vat` enum('yes','no') COLLATE utf8_unicode_ci DEFAULT 'yes',
`base_urls` text COLLATE utf8_unicode_ci,
`add_base_url_as_it_is` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`cut_endless_urls` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'yes',
`deep_crawl_type` enum('website','sitemap_google') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'website',
`start_urls` text COLLATE utf8_unicode_ci,
`test_product_urls` text COLLATE utf8_unicode_ci,
`strip_urls_after_last_slash` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`pattern_error_urls` text COLLATE utf8_unicode_ci,
`pattern_next_urls` text COLLATE utf8_unicode_ci,
`pattern_next_urls_ignore` text COLLATE utf8_unicode_ci,
`pattern_next_urls_follow` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`start_urls_running_number` int(11) DEFAULT NULL,
`start_urls_running_number_steps` int(11) NOT NULL DEFAULT '1',
`pattern_product_url` text COLLATE utf8_unicode_ci,
`pattern_product_url_ignore` text COLLATE utf8_unicode_ci,
`pattern_product_url_by_dom` text COLLATE utf8_unicode_ci,
`pattern_product_url_by_dom_source` enum('href','onclick') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'href',
`pattern_product_url_follow` enum('yes','no') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no',
`pattern_product_id` text COLLATE utf8_unicode_ci,
`pattern_name` text COLLATE utf8_unicode_ci,
`pattern_description` text COLLATE utf8_unicode_ci,
`pattern_url` text COLLATE utf8_unicode_ci,
`pattern_price` text COLLATE utf8_unicode_ci,
`pattern_old_price` text COLLATE utf8_unicode_ci,
`pattern_category_path` text COLLATE utf8_unicode_ci,
`pattern_shipping` text COLLATE utf8_unicode_ci,
`pattern_availability` text COLLATE utf8_unicode_ci,
`pattern_brand` text COLLATE utf8_unicode_ci,
`pattern_img` text COLLATE utf8_unicode_ci,
`pattern_img2` text COLLATE utf8_unicode_ci,
`pattern_img3` text COLLATE utf8_unicode_ci,
`pattern_img4` text COLLATE utf8_unicode_ci,
`pattern_img5` text COLLATE utf8_unicode_ci,
`pattern_img6` text COLLATE utf8_unicode_ci,
`pattern_img7` text COLLATE utf8_unicode_ci,
`pattern_img8` text COLLATE utf8_unicode_ci,
`pattern_img9` text COLLATE utf8_unicode_ci,
`timestamp_deep_crawl` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`timestamp_update_crawl` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`merchant_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci `page_compressed`=1

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME like '%crawler_shop%'

TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE
3930 xxx/crawler_shop_settings 1697 57 3916 Barracuda Dynamic 0
2398 xxx_old/crawler_shop_settings 1697 57 2384 Barracuda Dynamic 0

Note: I have this same table in two databases. xxx and xxx_old.
Strangely the problem started happening when i created the table in xxx. Backing up was fine when the table was only in xxx_old.
The table in xxx_old has page_compression=1 and barracuda as well. Literally copy pasted the same show create table statement... Strange.