我有一个已准备好数据库的现有应用程序我已在 database.yml 中进行了所有更改,并在尝试使用 rails s 启动 WEBrick 服务器时进行了捆绑安装我收到以下错误
/usr/lib/ruby/1.9.1/fileutils.rb:247:in `mkdir': File exists - /home/username/appname/app/releases/20120831125545/tmp (Errno::EEXIST)
from /usr/lib/ruby/1.9.1/fileutils.rb:247:in `fu_mkdir'
from /usr/lib/ruby/1.9.1/fileutils.rb:221:in `block (2 levels) in mkdir_p'
from /usr/lib/ruby/1.9.1/fileutils.rb:219:in `reverse_each'
from /usr/lib/ruby/1.9.1/fileutils.rb:219:in `block in mkdir_p'
from /usr/lib/ruby/1.9.1/fileutils.rb:205:in `each'
from /usr/lib/ruby/1.9.1/fileutils.rb:205:in `mkdir_p'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands/server.rb:62:in `block in start'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands/server.rb:61:in `each'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands/server.rb:61:in `start'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands.rb:30:in `block in <top (required)>'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands.rb:27:in `tap'
from /home/username/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.10/lib/rails/commands.rb:27:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
我错过了一些步骤,我是否必须重新运行迁移(我已经准备好数据库,其中包含数据)有什么帮助吗?