멀티사이트:migrate를 동시에 실행하면 실패합니다

기여 버그
1

이것과 관련이 있을 것 같습니다

Multisite migrator is running using 2 processes
Running migrations and seeds for default database(s)
[mutex.cc : 2443] RAW: Check w->waitp->cond == nullptr failed: Mutex::Fer while waiting on Condition
rake aborted!
Parallel::DeadWorker: Parallel::DeadWorker (Parallel::DeadWorker)
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:83:in 'Parallel::Worker#work'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:545:in 'block (4 levels) in Parallel.work_in_processe
s' 
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:660:in 'Parallel.with_instrumentation'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:544:in 'block (3 levels) in Parallel.work_in_processe
s' 
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:532:in 'block (2 levels) in Parallel.work_in_processe
s' 
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:219:in 'block (4 levels) in Parallel.in_threads'

Caused by:
EOFError: end of file reached (EOFError)
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:81:in 'Parallel::Worker#work'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:545:in 'block (4 levels) in Parallel.work_in_processe
s' 
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:660:in 'Parallel.with_instrumentation'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:544:in 'block (3 levels) in Parallel.work_in_processe
s' /var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:532:in 'block (2 levels) in Parallel.work_in_processe
s'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/parallel-1.27.0/lib/parallel.rb:219:in 'block (4 levels) in Parallel.in_threads'
Tasks: TOP => multisite:migrate
(See full trace by running task with --trace)
Migration failed --> RC = 1
2

그래서 영리한 척해서 DISCOURSE_MULTISITE_MIGRATE_CONCURRENCY=1을 설정해서 1로 되돌려 봤습니다.

그런데 그것도 작동하지 않았습니다.

Multisite migrator is running using 1 processes
Running migrations and seeds for default database(s) [BUG] Segmentation fault at 0x0000000000000000
ruby 3.4.7 (2025-10-08 revision 7a5688e2a2) +PRISM [x86_64-linux]
-- Machine register context ------------------------------------------------
 RIP: 0x00007e0e54d5e163 RBP: 0x00007e0e50cfc7a0 RSP: 0x00007e0e50cfc770 RAX: 0x00007e0e50cfdd70 RBX: 0x00007e0e58e90700 RCX: 0x00007e0e57ddf178
 RDX: 0x0000000000000000 RDI: 0x0000000000000000 RSI: 0x00007e0e58e90700  R8: 0x00007e0e57ddefb0  R9: 0x0000000000000030 R10: 0x00007e0e400962f0 R11: 0x0000000000000050 R12: 0x0000000000000000 R13: 0x00007e0e58e90700
 R14: 0x0000000000000000 R15: 0x00007e0e55c460e0 EFL: 0x0000000000010246

-- C level backtrace information -------------------------------------------/usr/local/lib/libruby.so.3.4(rb_print_backtrace+0x8) [0x7e0e7633c882] /tmp/ruby-build.20260305163605.64055.iTdGM5/ruby-3.4.7/vm_dump.
c:823 /usr/local/lib/libruby.so.3.4(rb_vm_bugreport) /tmp/ruby-build.20260305163605.64055.iTdGM5/ruby-3.4.7/vm_dump.c:1155/usr/local/lib/libruby.so.3.4(rb_bug_for_fatal_signal+0x104) [0x7e0e7611b4b4] /tmp/ruby-build.20260305163605.64055.iTdGM5/ruby-3.4.7/e
rror.c:1130/usr/local/lib/libruby.so.3.4(sigsegv+0x46) [0x7e0e7627b9a6] /tmp/ruby-build.20260305163605.64055.iTdGM5/ruby-3.4.7/signal.c:934/lib/x86_64-linux-gnu/libc.so.6(0x7e0e75c45330) [0x7e0e75c45330]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e54d5e163) [0x7e0e54d5e163]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e54d5e4e7) [0x7e0e54d5e4e7]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e54848668) [0x7e0e54848668]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e5484217b) [0x7e0e5484217b]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e54849815) [0x7e0e54849815]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e548499ff) [0x7e0e548499ff]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e54306628) [0x7e0e54306628]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e5430839b) [0x7e0e5430839b]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e545fba80) [0x7e0e545fba80]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e545fc57a) [0x7e0e545fc57a]/var/www/discourse/vendor/bundle/ruby/3.4.0/extensions/x86_64-linux/3.4.0/mini_racer-0.19.2/mini_racer_extension.so(0x7e0e5491b636) [0x7e0e5491b636]
-- Other runtime information -----------------------------------------------
* Loaded script: /var/www/discourse/vendor/bundle/ruby/3.4.0/bin/rake

* Loaded features:

    0 enumerator.so
4

공식 Discourse Docker 이미지를 사용하고 계신가요? 저희 자체 호스팅 환경에서 multisite:migrate를 실행해 보았는데 문제가 없었습니다. 마이그레이션을 실행한 환경에 대한 정보가 있다면 디버깅에 도움이 될 것입니다.

5

흠, 백트레이스에서 mini_racer가 보이므로 포크(fork)하기 전에 mini_racer 컨텍스트를 해제해 볼 수 있습니다. 어쨌든 이것이 올바른 방법입니다.

1개의 좋아요
6

아니요, 저희는 자체 환경을 운영하고 있으며, 원인을 찾았습니다.

저희는 하나의 명령어로 여러 rake 작업을 실행하고 있었습니다 (RAILS_ENV=production bundle exec rake db:seed_fu multisite:migrate multisite:seed_fu).

db:seed_fu는 10년 전부터 존재했던 버그를 우회하기 위해 추가된 것이었습니다. 이 작업을 별도로 실행하면 문제가 사라집니다. 그리고 위 댓글 덕분에 무슨 일이 일어나고 있었는지 이제 이해하게 되었습니다.

1개의 좋아요
7

드디어 해결하셨군요 :+1:

1개의 좋아요