Warning: option 'innodb_file_io_threads': signed value 1 adjusted to 4 [00] 2019-02-11 03:50:23 /home/travis/server/bin/mariabackup based on MariaDB server 10.4.3-MariaDB Linux (x86_64) [00] 2019-02-11 03:50:23 incremental backup from 33715608 is enabled. [00] 2019-02-11 03:50:23 cd to /home/travis/logs/vardir/backup_0/ [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq2.ibd.delta to /home/travis/logs/vardir/backup_1//test/seq3.ibd.delta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq2.ibd.meta to /home/travis/logs/vardir/backup_1//test/seq3.ibd.meta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq9.new.meta to /home/travis/logs/vardir/backup_1//test/seq9.ibd.meta [00] 2019-02-11 03:50:23 Removing /home/travis/logs/vardir/backup_1//test/t8.ibd.meta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/t8.new.meta to /home/travis/logs/vardir/backup_1//test/t8.ibd.meta [00] 2019-02-11 03:50:23 Removing /home/travis/logs/vardir/backup_1//test/seq8.ibd.meta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq8.new.meta to /home/travis/logs/vardir/backup_1//test/seq8.ibd.meta [00] 2019-02-11 03:50:23 Removing /home/travis/logs/vardir/backup_1//test/seq8.ibd.delta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq8.new.delta to /home/travis/logs/vardir/backup_1//test/seq8.ibd.delta [00] 2019-02-11 03:50:23 Removing /home/travis/logs/vardir/backup_1//test/t8.ibd.delta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/t8.new.delta to /home/travis/logs/vardir/backup_1//test/t8.ibd.delta [00] 2019-02-11 03:50:23 Renaming /home/travis/logs/vardir/backup_1//test/seq9.new.delta to /home/travis/logs/vardir/backup_1//test/seq9.ibd.delta [00] 2019-02-11 03:50:23 This target seems to be already prepared. [00] 2019-02-11 03:50:23 mariabackup: using the following InnoDB configuration for recovery: [00] 2019-02-11 03:50:23 innodb_data_home_dir = . [00] 2019-02-11 03:50:23 innodb_data_file_path = ibdata1:12M:autoextend [00] 2019-02-11 03:50:23 innodb_log_group_home_dir = /home/travis/logs/vardir/backup_1/ [00] 2019-02-11 03:50:23 InnoDB: Using Linux native AIO [00] 2019-02-11 03:50:23 mariabackup: Generating a list of tablespaces [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//ibdata1.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//ibdata1.delta to ./ibdata1... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//mysql/innodb_table_stats.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//mysql/innodb_table_stats.ibd.delta to ./mysql/innodb_table_stats.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//mysql/transaction_registry.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//mysql/transaction_registry.ibd.delta to ./mysql/transaction_registry.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//mysql/gtid_slave_pos.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//mysql/gtid_slave_pos.ibd.delta to ./mysql/gtid_slave_pos.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//mysql/innodb_index_stats.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//mysql/innodb_index_stats.ibd.delta to ./mysql/innodb_index_stats.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/seq4.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/seq4.ibd.delta to ./test/seq4.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/seq8.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/seq8.ibd.delta to ./test/seq8.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/seq9.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/seq9.ibd.delta to ./test/seq9.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/t3#P#ver_p1.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/t3#P#ver_p1.ibd.delta to ./test/t3#P#ver_p1.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/seq3.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 mariabackup: Renaming test/seq3 to test/xtrabackup_tmp_#286.ibd [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/seq3.ibd.delta to ./test/seq3.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/t7.ibd.delta is 16384 bytes [00] 2019-02-11 03:50:23 Applying /home/travis/logs/vardir/backup_1//test/t7.ibd.delta to ./test/t7.ibd... [00] 2019-02-11 03:50:23 page size for /home/travis/logs/vardir/backup_1//test/t8.ibd.delta is 8192 bytes mariabackup: /home/travis/src/extra/mariabackup/xtrabackup.cc:4784: pfs_os_file_t xb_delta_open_matching_space(const char*, const char*, const xb_delta_info_t&, char*, size_t, bool*): Assertion `fil_space_t::physical_size(flags) == info.page_size' failed. 190211 3:50:23 [ERROR] mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. To report this bug, see https://mariadb.com/kb/en/reporting-bugs We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Server version: 10.4.3-MariaDB-debug key_buffer_size=0 read_buffer_size=131072 max_used_connections=0 max_threads=1 thread_count=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 5854 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x0 thread_stack 0x49000 /home/travis/server/bin/mariabackup(my_print_stacktrace+0x40)[0x555f151c0cff] mysys/stacktrace.c:269(my_print_stacktrace)[0x555f14a89fc6] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7ff3df9d1390] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7ff3dda52428] /lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7ff3dda5402a] /lib/x86_64-linux-gnu/libc.so.6(+0x2dbd7)[0x7ff3dda4abd7] /lib/x86_64-linux-gnu/libc.so.6(+0x2dc82)[0x7ff3dda4ac82] mariabackup/xtrabackup.cc:4786(xb_delta_open_matching_space(char const*, char const*, xb_delta_info_t const&, char*, unsigned long, bool*))[0x555f1455a667] mariabackup/xtrabackup.cc:4883(xtrabackup_apply_delta(char const*, char const*, char const*, void*))[0x555f1455ab13] mariabackup/xtrabackup.cc:5222(xb_process_datadir(char const*, char const*, unsigned long (*)(char const*, char const*, char const*, void*)))[0x555f1455bdf1] mariabackup/xtrabackup.cc:5259(xtrabackup_apply_deltas())[0x555f1455bed6] mariabackup/xtrabackup.cc:5502(xtrabackup_prepare_func(char**))[0x555f1455d559] mariabackup/xtrabackup.cc:6365(main_low(char**))[0x555f1455f917] mariabackup/xtrabackup.cc:6158(main)[0x555f1455f129] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7ff3dda3d830] /home/travis/server/bin/mariabackup(_start+0x29)[0x555f1454ece9] The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. Aborted (core dumped)