我今天早上进行了重建，然后尝试将备份恢复到容器中。我使用的是 2.6.0.beta5 (75a893fd61)，所有组件都在容器内。
备份恢复通常可以正常工作（之前也成功过），但今天却失败了，错误如下：
Starting restore: app-2020-11-06-033740-v20201009190955.tar.gz
[STARTED]
'system' has started the restore!
Marking restore as running...
Making sure /var/www/discourse/tmp/restores/default/2020-11-06-084354 exists...
Copying archive to tmp directory...
Unzipping archive, this may take a while...
Extracting dump file...
Validating metadata...
Current version: 20201103103401
Restored version: 20201009190955
Enabling readonly mode...
Pausing sidekiq...
Waiting up to 60 seconds for Sidekiq to finish running jobs...
Waiting for sidekiq to finish running jobs... #2
Waiting for sidekiq to finish running jobs... #3
Waiting for sidekiq to finish running jobs... #4
Waiting for sidekiq to finish running jobs... #5
Waiting for sidekiq to finish running jobs... #6
Waiting for sidekiq to finish running jobs... #7
Waiting for sidekiq to finish running jobs... #8
Waiting for sidekiq to finish running jobs... #9
Waiting for sidekiq to finish running jobs... #10
EXCEPTION: Sidekiq did not finish running all the jobs in the allowed time!
/var/www/discourse/lib/backup_restore/system_interface.rb:89:in `block in wait_for_sidekiq'
/var/www/discourse/lib/backup_restore/system_interface.rb:84:in `loop'
/var/www/discourse/lib/backup_restore/system_interface.rb:84:in `wait_for_sidekiq'
/var/www/discourse/lib/backup_restore/restorer.rb:47:in `run'
script/discourse:143:in `restore'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-1.0.1/lib/thor/base.rb:485:in `start'
script/discourse:284:in `<top (required)>'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `load'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `kernel_load'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:28:in `run'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli.rb:476:in `exec'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli.rb:30:in `dispatch'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/cli.rb:24:in `start'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/exe/bundle:46:in `block in <top (required)>'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/friendly_errors.rb:123:in `with_friendly_errors'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/exe/bundle:34:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Trying to rollback...
There was no need to rollback
Cleaning stuff up...
Removing tmp '/var/www/discourse/tmp/restores/default/2020-11-06-084354' directory...
Unpausing sidekiq...
Disabling readonly mode...
Marking restore as finished...
Notifying 'system' of the end of the restore...
Finished!
[FAILED]
Restore done.
之后，有一个 Ruby 进程持续占用 100% CPU 数小时。该进程信息如下：
# ps aux | grep sidekiq
discour+ 141 100 5.0 9302596 401484 ? SNl 06:34 127:46 sidekiq 6.1.2 discourse [5 of 5 busy]
如果我停止并重新启动容器，这个 Sidekiq 进程仍然会回到 100% CPU 占用。sidekiq.log 为空，production.log 也没有显示太多信息。
我该如何查明这个 Sidekiq 进程正在做什么？是否有人在使用此版本时遇到过备份恢复失败的问题？
