Details
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Bug
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Status: Open (View Workflow)
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Minor
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Resolution: Unresolved
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10.3.21, 10.6.14
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None
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Centos 7
Description
Hey there,
there is a reproduceable crash of MariaDB 10.3.x when running mariabackup on it. Reporting as advised in the resulting Error Log:
[00] 2020-03-30 12:39:07 Connecting to MySQL server host: localhost, user: root, password: set, port: 3306, socket: /var/lib/mysql/mysql.sock
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[00] 2020-03-30 12:39:07 Using server version 10.3.21-MariaDB
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mariabackup based on MariaDB server 10.3.21-MariaDB Linux (x86_64)
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[00] 2020-03-30 12:39:07 uses posix_fadvise().
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[00] 2020-03-30 12:39:07 cd to /var/lib/mysql/
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[00] 2020-03-30 12:39:07 open files limit requested 0, set to 1024
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[00] 2020-03-30 12:39:07 mariabackup: using the following InnoDB configuration:
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[00] 2020-03-30 12:39:07 innodb_data_home_dir =
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[00] 2020-03-30 12:39:07 innodb_data_file_path = ibdata1:12M:autoextend
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[00] 2020-03-30 12:39:07 innodb_log_group_home_dir = ./
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[00] 2020-03-30 12:39:07 InnoDB: Using Linux native AIO
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2020-03-30 12:39:07 0 [Note] InnoDB: Number of pools: 1
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[00] 2020-03-30 12:39:07 mariabackup: Generating a list of tablespaces
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2020-03-30 12:39:07 0 [Warning] InnoDB: Allocated tablespace ID 2325 for sf_XXXXXX_relaunch/ezinfocollection_attribute, old maximum was 0
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2020-03-30 12:39:07 0 [ERROR] InnoDB: Operating system error number 24 in a file operation.
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2020-03-30 12:39:07 0 [ERROR] InnoDB: Error number 24 means 'Too many open files'
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2020-03-30 12:39:07 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
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2020-03-30 12:39:07 0 [ERROR] InnoDB: File ./XXXXXX_magento2/salesrule.ibd: 'open' returned OS error 224.
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2020-03-30 12:39:07 0x7ff942b7d8c0 InnoDB: Assertion failure in file /root/rpmbuild/BUILD/mariadb-10.3.21/storage/innobase/fil/fil0fil.cc line 677
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InnoDB: Failing assertion: success
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InnoDB: We intentionally generate a memory trap.
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InnoDB: Submit a detailed bug report to https://jira.mariadb.org/
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InnoDB: If you get repeated assertion failures or crashes, even
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InnoDB: immediately after the mysqld startup, there may be
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InnoDB: corruption in the InnoDB tablespace. Please refer to
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InnoDB: https://mariadb.com/kb/en/library/innodb-recovery-modes/
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InnoDB: about forcing recovery.
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200330 12:39:07 [ERROR] mysqld got signal 6 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see https://mariadb.com/kb/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.3.21-MariaDB
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key_buffer_size=0
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read_buffer_size=131072
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max_used_connections=0
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max_threads=1
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thread_count=0
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 5600 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x0
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x0 thread_stack 0x49000
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mariabackup(my_print_stacktrace+0x3d)[0x5570572ef63d]
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mariabackup(handle_fatal_signal+0x327)[0x557056e2ce17]
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/lib64/libpthread.so.0(+0xf5f0)[0x7ff9427685f0]
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/lib64/libc.so.6(gsignal+0x37)[0x7ff940824337]
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/lib64/libc.so.6(abort+0x148)[0x7ff940825a28]
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mariabackup(+0x4e4616)[0x557056aec616]
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mariabackup(+0xaa5b99)[0x5570570adb99]
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mariabackup(+0xaa5c1f)[0x5570570adc1f]
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mariabackup(+0x507b7e)[0x557056b0fb7e]
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mariabackup(+0x5071bd)[0x557056b0f1bd]
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mariabackup(+0x5076ad)[0x557056b0f6ad]
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mariabackup(+0x50d0b6)[0x557056b150b6]
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mariabackup(main+0x194)[0x557056aee5f4]
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/lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff940810505]
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mariabackup(+0x50073d)[0x557056b0873d]
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
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information that should help you find out what is causing the crash.
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Writing a core file...
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Working directory at /var/lib/mysql
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Max. Open Files should not be the Source I guess as it's raised to the limit already:
# cat /var/run/mariadb/mariadb.pid
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2805
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# cat /proc/2805/limits
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Limit Soft Limit Hard Limit Units
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Max cpu time unlimited unlimited seconds
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Max file size unlimited unlimited bytes
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Max data size unlimited unlimited bytes
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Max stack size 8388608 unlimited bytes
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Max core file size 0 unlimited bytes
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Max resident set unlimited unlimited bytes
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Max processes 62987 62987 processes
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Max open files 1048576 1048576 files
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Max locked memory unlimited unlimited bytes
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Max address space unlimited unlimited bytes
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Max file locks unlimited unlimited locks
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Max pending signals 514290 514290 signals
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Max msgqueue size 819200 819200 bytes
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Max nice priority 0 0
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Max realtime priority 0 0
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Max realtime timeout unlimited unlimited us
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Hope someone here can give me a helping hand on this! 
thx, bye from Austria
Andreas
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