Avoid errors like: | Path length (109) is longer than maximum supported length (108) and will be truncated at /usr/lib64/perl5/vendor_perl/Socket.pm line 880, line 1. | worker[2] mysql-test-run: *** ERROR: Socket path '/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.s390x/usr/share/mysql-test/var/tmp/2' too long, | it would be truncated and thus not possible to use for connection to MySQL Server. Set a shorter with --tmpdir= option === On Fedora 32: | $ grep -e "PATH" /usr/include/linux/limits.h | #define PATH_MAX 4096 /* # chars in a path name including nul */ === Thus setting the maximum path length on Fedora to 108 characters is just too short. BTW on the modern filesystems you can easily create path longer than PATH_MAX. The PATH_MAX constant is unsafe. Interesting article: https://insanecoding.blogspot.com/2007/11/pathmax-simply-isnt.html === The question is why haven't I encountered this issue until recently ? After the recent tweaks to the testsuite (between 8.0.24 and 8.0.25 release), the generated --tmpdir path changed from | --tmpdir=/builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/mysql-test/var/tmp/ to | --tmpdir=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/tmp/ === The whole setup changed as follows: BEFORE: | Installing system database | ### safe_path: /builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/runtime_output_directory///mysqltest_safe_process --verbose -- /builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/runtime_output_directory/mysqld --no-defaults --initialize-insecure --loose-skip-ndbcluster --tmpdir=/builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/mysql-test/var/tmp/ --core-file --datadir=/builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/mysql-test/var/data/ --secure-file-priv=/builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/mysql-test/var --innodb_buffer_pool_size=24M --innodb-log-file-size=5M --innodb_autoextend_increment=8 --character-sets-dir=/builddir/build/BUILD/mysql-8.0.24/share/charsets --loose-auto_generate_certs=OFF --loose-sha256_password_auto_generate_rsa_keys=OFF --loose-caching_sha2_password_auto_generate_rsa_keys=OFF --init-file=/builddir/build/BUILD/mysql-8.0.24/x86_64-redhat-linux-gnu/mysql-test/var/tmp/bootstrap.sql AFTER: | Installing system database | ### safe_path: /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/bin//mysqltest_safe_process --verbose -- /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/libexec/mysqld --no-defaults --initialize-insecure --loose-skip-ndbcluster --tmpdir=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/tmp/ --core-file --datadir=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/data/ --secure-file-priv=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var --innodb_buffer_pool_size=24M --innodb-log-file-size=5M --innodb_autoextend_increment=8 --character-sets-dir=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/community-mysql/charsets --loose-auto_generate_certs=OFF --loose-sha256_password_auto_generate_rsa_keys=OFF --loose-caching_sha2_password_auto_generate_rsa_keys=OFF --init-file=/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/tmp/bootstrap.sql === The likely cause is the added | cd %{buildroot}%{_datadir}/mysql-test which was not originally present in the SPECfile. However the MariaDB implementation does not have this issue, even though it has the same SPECfile %check phase code. === In the extended log, you can see '/tmp/XfTFAis2Jl' being created and deleted short after. Even though the script warns about the path length, tries to workaround it; it destroyes that workaround short after and use the too-long path instead. I'm not sure whether the output is synchronous, but even if it wasn'tit still looks weird. | + cd /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test | Logging: ./mysql-test-run.pl --verbose --parallel=auto --force --retry=2 --suite-timeout=900 --testcase-timeout=30 --mysqld=--binlog-format=mixed --max-test-fail=5 --report-unstable-tests --clean-vardir --suite=main --mem --skip-test-list=platform-specific-tests.list | Path length (109) is longer than maximum supported length (108) and will be truncated at /usr/lib64/perl5/vendor_perl/Socket.pm line 880. | Too long tmpdir path '/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/tmp' creating a shorter one | - Using tmpdir: '/tmp/XfTFAis2Jl' | > Collecting: main | > testdir: /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/t | > resdir: /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/r | > Collecting: i_main | Removing old var directory | > opt_vardir: /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var | > Removing /builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var/ | > Removing /dev/shm/var_933_jfTb | > Removing /tmp/XfTFAis2Jl/ | Creating var directory '/builddir/build/BUILDROOT/community-mysql-8.0.24-1.fc35.x86_64/usr/share/mysql-test/var' | > Creating /dev/shm/var_933_jfTb | - symlinking 'var' to '/dev/shm/var_933_jfTb' --- mysql-8.4.0/mysql-test/mysql-test-run.pl 2024-05-06 09:54:53.012901610 +0200 +++ mysql-8.4.0/mysql-test/mysql-test-run.pl_patched 2024-05-28 15:30:10.463224713 +0200 @@ -3591,17 +3591,6 @@ sub setup_vardir() { mtr_report("RR recording for server is enabled. For replay, execute: \"rr replay $opt_vardir\/rr_trace/mysqld-N\""); } - # On some operating systems, there is a limit to the length of a - # UNIX domain socket's path far below PATH_MAX. Don't allow that - # to happen. - my $res = - check_socket_path_length("$opt_tmpdir/mysqld.NN.sock", $opt_parallel); - if ($res) { - mtr_error("Socket path '$opt_tmpdir' too long, it would be ", - "truncated and thus not possible to use for connection to ", - "MySQL Server. Set a shorter with --tmpdir= option"); - } - # Copy all files from std_data into var/std_data # and make them world readable copytree("$glob_mysql_test_dir/std_data", "$opt_vardir/std_data", "0022")