[why] As Signal.trap(:SIGCHLD, 'SIG_IGN') has been set, the init process will handle the return status of child process, so ret = system(git clone xxx) can't get return value, which cause worker thread die. Use %x() instead of system(), and use stderr to check if 'git clone' succeed. So return value is not needed. [errmsg] in `system': No child process - Another thread waited the process started by system(). (Errno::ECHILD) Signed-off-by: Li Yuanchao <lyc163mail@163.com> --- lib/git_mirror.rb | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/git_mirror.rb b/lib/git_mirror.rb index 6e6664a..99534f6 100644 --- a/lib/git_mirror.rb +++ b/lib/git_mirror.rb @@ -38,7 +38,8 @@ class GitMirror url = "/srv/git/#{url.delete_prefix('https://')}" end 10.times do - ret = system("git clone --mirror #{url} #{mirror_dir}") + stderr = %x(git clone --mirror #{url} #{mirror_dir} 2>&1) + ret = !stderr.include?('fatal') break if ret end FileUtils.rm_r(mirror_dir) unless ret -- 2.23.0