trac-admin upgrade wrong

[anonymous]

Traceback info:

Traceback (most recent call last):
  File "/usr/local/bin/trac-admin", line 9, in <module>
    load_entry_point('Trac==0.11.7', 'console_scripts', 'trac-admin')()
  File "/usr/lib/python2.6/dist-packages/trac/admin/console.py", line 1321, in run
    return admin.onecmd(command)
  File "/usr/lib/python2.6/dist-packages/trac/admin/console.py", line 138, in onecmd
    rv = cmd.Cmd.onecmd(self, line) or 0
  File "/usr/lib/python2.6/cmd.py", line 219, in onecmd
    return func(arg)
  File "/usr/lib/python2.6/dist-packages/trac/admin/console.py", line 1159, in do_upgrade
    self.__env.upgrade(backup=do_backup)
  File "/usr/lib/python2.6/dist-packages/trac/env.py", line 462, in upgrade
    self.backup(backup_dest)
  File "/usr/lib/python2.6/dist-packages/trac/env.py", line 430, in backup
    return DatabaseManager(self).backup(dest)
  File "/usr/lib/python2.6/dist-packages/trac/db/api.py", line 120, in backup
    return connector.backup(dest)
  File "/usr/lib/python2.6/dist-packages/trac/db/mysql_backend.py", line 173, in backup
    p = Popen(args, env=environ, stderr=PIPE, close_fds=close_fds)
  File "/usr/lib/python2.6/subprocess.py", line 633, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1139, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

if i remove the plugin ,no error!

my mysql server is in another host!

thank you!!

[osimons]

I don't quite see how this is a plugin issue. From what I see the problem is in Trac itself where any upgrade will call the backend backup routine, which from what I read from the traceback factors out to subprocess.Popen(). This is basically regular shell tools, and it likely don't find the necessary tools as the local machine does not have mysql installed.

Anyway, my guess is that any plugin that needs upgrades will crash the same way. I suggest you make a db copy manually, and then turn off backup on the trac-admin upgrade command using the --no-backup (or -b) option when running.

Please reopen ticket if I got this all wrong.