xtrabackup: recognized server arguments: --datadir=/var/lib/mysql xtrabackup: recognized client arguments: --user=root --password=* --prepare=1 --target-dir=/home/mchawla/dbbackup_12_02_2019/full --incremental-dir=/home/mchawla/dbbackup_12_02_2019/inc /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup version 8.0.4 based on MySQL server 8.0.14 Linux (x86_64) (revision id: 034a159) incremental backup from 18252920 is enabled. xtrabackup: cd to /home/mchawla/dbbackup_12_02_2019/full/ xtrabackup: This target seems to be already prepared with --apply-log-only. Number of pools: 1 xtrabackup: xtrabackup_logfile detected: size=8388608, start_lsn=(18252920) xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:10M:autoextend xtrabackup: innodb_log_group_home_dir = /home/mchawla/dbbackup_12_02_2019/inc/ xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 8388608 xtrabackup: Generating a list of tablespaces Directories to scan '.;.;.' Scanning './' Completed space ID check of 2 files. Allocated tablespace ID 7 for test/sbtest10, old maximum was 0 Using undo tablespace './undo_001'. Using undo tablespace './undo_002'. Opened 2 existing undo tablespaces. xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//undo_002.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//undo_002.delta to ./undo_002... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//ibdata1.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//ibdata1.delta to ./ibdata1... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//sys/sys_config.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//sys/sys_config.ibd.delta to ./sys/sys_config.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest2.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest2.ibd.delta to ./test/sbtest2.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest6.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest6.ibd.delta to ./test/sbtest6.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest4.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest4.ibd.delta to ./test/sbtest4.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest1.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest1.ibd.delta to ./test/sbtest1.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest3.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest3.ibd.delta to ./test/sbtest3.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest7.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest7.ibd.delta to ./test/sbtest7.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest10.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest10.ibd.delta to ./test/sbtest10.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest9.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest9.ibd.delta to ./test/sbtest9.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest8.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest8.ibd.delta to ./test/sbtest8.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest5.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//test/sbtest5.ibd.delta to ./test/sbtest5.ibd... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//undo_001.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//undo_001.delta to ./undo_001... xtrabackup: page size for /home/mchawla/dbbackup_12_02_2019/inc//mysql.ibd.delta is 16384 bytes Applying /home/mchawla/dbbackup_12_02_2019/inc//mysql.ibd.delta to ./mysql.ibd... xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:10M:autoextend xtrabackup: innodb_log_group_home_dir = /home/mchawla/dbbackup_12_02_2019/inc/ xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 8388608 xtrabackup: Starting InnoDB instance for recovery. xtrabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) PUNCH HOLE support available !!!!!!!! UNIV_DEBUG switched on !!!!!!!!! Mutexes and rw_locks use GCC atomic builtins Uses event mutexes GCC builtin __atomic_thread_fence() is used for memory barrier Compressed tables use zlib 1.2.7 Number of pools: 1 Using CPU crc32 instructions Directories to scan '.;.;.' Scanning './' Completed space ID check of 14 files. Initializing buffer pool, total size = 128.000000M, instances = 1, chunk size =128.000000M Completed initialization of buffer pool If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). Are you sure you are using the right ib_logfiles to start up the database? Log sequence number in the ib_logfiles is 18252920, less than the log sequence number in the first system tablespace file header, 22020932. The log sequence number 22020932 in the system tablespace does not match the log sequence number 18252920 in the ib_logfiles! Database was not shutdown normally! Starting crash recovery. Starting to parse redo log at lsn = 18252920, whereas checkpoint_lsn = 18252920 Doing recovery: scanned up to log sequence number 20878867 Log background threads are being started... Applying a batch of 281 redo log records ... Extending tablespace : 10 space name: test/sbtest1 to new size: 25 pages during recovery. Extending tablespace : 10 space name: test/sbtest1 to new size: 28 pages during recovery. Extending tablespace : 10 space name: test/sbtest1 to new size: 30 pages during recovery. Extending tablespace : 7 space name: test/sbtest10 to new size: 24 pages during recovery. Extending tablespace : 7 space name: test/sbtest10 to new size: 27 pages during recovery. Extending tablespace : 7 space name: test/sbtest10 to new size: 28 pages during recovery. Extending tablespace : 7 space name: test/sbtest10 to new size: 29 pages during recovery. 10% 20% 30% Extending tablespace : 7 space name: test/sbtest10 to new size: 30 pages during recovery. InnoDB: Assertion failure: log0recv.cc:2118:!page || page_type == FIL_PAGE_UNDO_LOG InnoDB: thread 140506281453312InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to https://jira.percona.com/projects/PXB. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. 12:14:39 UTC - 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. Attempting to collect some information that could help diagnose the problem. As this is a crash and something is definitely wrong, the information collection process might fail. key_buffer_size=0 read_buffer_size=131072 max_used_connections=0 max_threads=0 thread_count=0 connection_count=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 0 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 = 0 thread_stack 0x46000 /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(my_print_stacktrace(unsigned char*, unsigned long)+0x43) [0x4312127] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(handle_fatal_signal+0x3e3) [0x2ec1f9a] /usr/lib64/libpthread.so.0(+0xf5d0) [0x7fca32bca5d0] /usr/lib64/libc.so.6(gsignal+0x37) [0x7fca30845207] /usr/lib64/libc.so.6(abort+0x148) [0x7fca308468f8] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup() [0x34c1664] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup() [0x32e65b1] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(recv_recover_page_func(bool, buf_block_t*)+0x62c) [0x32e77cd] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(buf_page_io_complete(buf_page_t*, bool)+0x64f) [0x3053353] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(fil_aio_wait(unsigned long)+0x1ac) [0x31398db] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup() [0x3439583] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(void std::__invoke_impl(std::__invoke_other, void (*&)(unsigned long), unsigned long&)+0x34) [0x285b636] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(std::__invoke_result::type std::__invoke(void (*&)(unsigned long), unsigned long&)+0x3f) [0x285b1e3] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(void std::_Bind::__call(std::tuple<>&&, std::_Index_tuple<0ul>)+0x48) [0x285ad90] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(void std::_Bind::operator()<, void>()+0x2a) [0x285a6ca] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(void Runnable::operator()(void (*&&)(unsigned long), unsigned long&&)+0x5d) [0x2859685] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(void std::__invoke_impl(std::__invoke_other, Runnable&&, void (*&&)(unsigned long), unsigned long&&)+0x4f) [0x28577ab] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(std::__invoke_result::type std::__invoke(Runnable&&, void (*&&)(unsigned long), unsigned long&&)+0x57) [0x2855193] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(decltype (__invoke((_S_declval<0ul>)(), (_S_declval<1ul>)(), (_S_declval<2ul>)())) std::thread::_Invoker >::_M_invoke<0ul, 1ul, 2ul>(std::_Index_tuple<0ul, 1ul, 2ul>)+0x5f) [0x285c03d] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(std::thread::_Invoker >::operator()()+0x1d) [0x285be97] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup(std::thread::_State_impl > >::_M_run()+0x1c) [0x285bbb0] /home/mchawla/pxb_8_0_5_debug/bin/xtrabackup() [0x464242f] /usr/lib64/libpthread.so.0(+0x7dd5) [0x7fca32bc2dd5] /usr/lib64/libc.so.6(clone+0x6d) [0x7fca3090cead] Please report a bug at https://jira.percona.com/projects/PXB