Failed to create environment under Vista

[anatoly <techtonik@…>]

Freshly installed Trac 0.11.6

C:\~env\Python26\Scripts\trac-admin.exe env4devplug initenv

Path to repository [/path/to/repos]>

Creating and Initializing Project
Initenv for 'M:\p\trac\env4devplug' failed.
 Failed to create environment.
(6832, 'This object is not allowed to be opened in a transaction.')
Traceback (most recent call last):
  File "C:\~env\Python26\lib\site-packages\trac\admin\console.py", line 583, in do_initenv
    options=options)
  File "C:\~env\Python26\lib\site-packages\trac\env.py", line 207, in __init__
    self.create(options)
  File "C:\~env\Python26\lib\site-packages\trac\env.py", line 337, in create
    self.config.save()
  File "C:\~env\Python26\lib\site-packages\trac\config.py", line 225, in save
    fileobj.close()
  File "C:\~env\Python26\lib\site-packages\trac\util\__init__.py", line 178, in commit
    rename(self._temp, self._path)
  File "C:\~env\Python26\lib\site-packages\trac\util\__init__.py", line 111, in rename
    raise ctypes.WinError()
WindowsError: [Error 6832] This object is not allowed to be opened in a transaction.

Seems to be connected to #8623 fixes

[anonymous]

python trac/util/tests/__init__.py run ok.

[Remy Blank]

Is your M: drive a network share? We should probably have a fallback for that case. Actually, we should try each of the three rename methods on Windows, falling back to the next one in case of an error.

[anatoly techtonik <techtonik@…>]

No, it is local, but has Ext2 file system, because shared between vista and other systems on the machine.

[anatoly techtonik <techtonik@…>]

Are you certain to leave this without fallback fix in 0.11?

[Remy Blank]

Replying to anatoly techtonik <techtonik@…>:

No, it is local, but has Ext2 file system, because shared between vista and other systems on the machine.

Ah, but I expect the same kind of issue with a network drive.

Are you certain to leave this without fallback fix in 0.11?

No, you're right. My bad.

[anatoly techtonik <techtonik@…>]

Replying to rblank:

Ah, but I expect the same kind of issue with a network drive.

With network drive there is a different error message.

WindowsError: [Error 6805] The remote server or share does not support transacted file operations.

[Remy Blank]

Putting this on my list.

[Remy Blank]

This has been fixed in [8994] by trying all three variants for renaming (MoveFileTransacted, MoveFileEx and os.rename) and falling back to the next one in case of failure.