Observed new xtrabackup crash during prepare in bb-10.1-wlad-xtrabackup after recent merge (I have strong consideration that it didn't crash in source code from ~December).
InnoDB: Tablespaces for test/test#P#p2 have been found in two places;
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Location 1: SpaceID: 6 LSN: 0 File: ./test/test#P#p2.ibd
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Location 2: SpaceID: 6 LSN: 0 File: /home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/partitdata/test/test#P#p2.ibd
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You must delete one of them.
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170222 9:24:34 [ERROR] mysqld got signal 6 ;
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...
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup/xtrabackup(my_print_stacktrace+0x29)[0x55f6d8034149]
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup/xtrabackup(handle_fatal_signal+0x3ad)[0x55f6d7c1cfed]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x11630)[0x7fc71f7e6630]
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/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x9f)[0x7fc71dc767ef]
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/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7fc71dc783ea]
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup/xtrabackup(+0x847204)[0x55f6d7eb7204]
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup/xtrabackup(+0x8ce1b4)[0x55f6d7f3e1b4]
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mysys/stacktrace.c:268(my_print_stacktrace)[0x55f6d7f42d11]
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sql/signal_handler.cc:168(handle_fatal_signal)[0x55f6d7f437a4]
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log/log0recv.cc:3088(recv_init_crash_recovery())[0x55f6d7f43e9a]
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srv/srv0start.cc:2529(innobase_start_or_create_for_mysql())[0x55f6d7fbf3f6]
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xtrabackup/xtrabackup.cc:1842(innodb_init())[0x55f6d79d857d]
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xtrabackup/xtrabackup.cc:6336(xtrabackup_prepare_func)[0x55f6d79e4ffc]
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/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7fc71dc613f1]
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup/xtrabackup(_start+0x2a)[0x55f6d79f893a]
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Please note that indeed .ibd file exists in both places, just it is probably valid situation as one of places is actual original .ibd referenced by .isl inside backup:
$ find ~/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/ | grep p2.i
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/log/xtrabackup.partition_data_external/mysqld.1/data/test/test#P#p2.isl
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/backup/test/test#P#p2.ibd
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/backup/test/test#P#p2.isl
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/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/mysql-test/var/partitdata/test/test#P#p2.ibd
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Test case run with :
perl mysql-test-run.pl --mysqld="--partition" partition_data_external.test
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$ cat ../mysql-test/suite/xtrabackup/partition_data_external.test
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let $targetdir=$MYSQLTEST_VARDIR/backup;
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mkdir $targetdir;
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mkdir $MYSQLTEST_VARDIR/partitdata;
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eval CREATE TABLE test (
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a int(11) DEFAULT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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PARTITION BY RANGE (a)
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(PARTITION p0 VALUES LESS THAN (100),
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PARTITION P1 VALUES LESS THAN (200),
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PARTITION p2 VALUES LESS THAN (300)
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DATA DIRECTORY = "$MYSQLTEST_VARDIR/partitdata",
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PARTITION p3 VALUES LESS THAN (400)
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DATA DIRECTORY = "$MYSQLTEST_VARDIR/partitdata",
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PARTITION p4 VALUES LESS THAN MAXVALUE);
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INSERT INTO test VALUES (1), (101), (201), (301), (401);
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exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --target-dir=$targetdir;
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exec $XTRABACKUP --prepare --target-dir=$targetdir;
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DROP TABLE t;
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rmdir $targetdir;
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rmdir $MYSQLTEST_VARDIR/partitdata;
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Note1 : xtrabackup mtr test suite has been renamed to mariabackup , so need adjust paths above accordingly.
Note2 : stack trace with ha_innodb.so has little more info showing that crash happens in fil_load_single_table_tablespaces:
mysys/stacktrace.c:268(my_print_stacktrace)[0x7f22903a73ea]
fil/fil0fil.cc:5513(fil_load_single_table_tablespaces(unsigned long (*)(char const*, char const*)))[0x56176c1e9204]
log/log0recv.cc:3088(recv_init_crash_recovery())[0x56176c2701b4]
log/log0recv.cc:2898(recv_scan_log_recs(unsigned long, unsigned long, unsigned char const*, unsigned long, unsigned long, unsigned long*, unsigned long*, dberr_t*))[0x56176c274d11]
log/log0recv.cc:3031(recv_group_scan_log_recs(log_group_t*, unsigned long*, unsigned long*, dberr_t*))[0x56176c2757a4]
log/log0recv.cc:3328(recv_recovery_from_checkpoint_start_func(unsigned long, unsigned long, unsigned long, unsigned long))[0x56176c275e9a]
srv/srv0start.cc:2529(innobase_start_or_create_for_mysql())[0x56176c2f13f6]
xtrabackup/xtrabackup.cc:1842(innodb_init())[0x56176bd0a57d]
xtrabackup/xtrabackup.cc:6336(xtrabackup_prepare_func)[0x56176bd16ffc]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7f22903903f1]
/home/a/farm/m9-bb-10.1-wlad-xtrabackup/build/extra/xtrabackup//xtrabackup(_start+0x2a)[0x56176bd2a93a]
Following assert in fil_extend_space_to_desired_size() triggers:
fil_space_t* space = fil_space_get_by_id(space_id);
ut_a(space);