Hi. Does the parallel execution feature work under Windows? Specifically, I
am running Fabric 1.4.3 under Windows 2008 R2 and Python 2.7.2, 64-bit.
When I try a simple task to fetch the hostname of each server in a given role,
I get an error (see below). Once I comment out the @parallel decorator, it
works fine, albeit serially.
@task
@parallel
def hostnames():
run('hostname')
--
C:\> fab -R app windows.misc.hostnames
[192.168.1.1] Executing task 'windows.misc.hostnames'
[192.168.1.2] Executing task 'windows.misc.hostnames'
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\fabric\main.py", line 717, in main
*args, **kwargs
File "C:\Python27\lib\site-packages\fabric\tasks.py", line 320, in execute
ran_jobs = jobs.run()
File "C:\Python27\lib\site-packages\fabric\job_queue.py", line 133, in run
_advance_the_queue()
File "C:\Python27\lib\site-packages\fabric\job_queue.py", line 123, in
_advance_the_queue
job.start()
File "C:\Python27\lib\multiprocessing\process.py", line 130, in start
self._popen = Popen(self)
File "C:\Python27\lib\multiprocessing\forking.py", line 271, in __init__
dump(process_obj, to_child, HIGHEST_PROTOCOL)
File "C:\Python27\lib\multiprocessing\forking.py", line 193, in dump
ForkingPickler(file, protocol).dump(obj)
File "C:\Python27\lib\pickle.py", line 224, in dump
self.save(obj)
File "C:\Python27\lib\pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "C:\Python27\lib\pickle.py", line 419, in save_reduce
save(state)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "C:\Python27\lib\pickle.py", line 681, in _batch_setitems
save(v)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 748, in save_global
(obj, module, name))
pickle.PicklingError: Can't pickle <function inner at 0x0000000003257A58>: it's
not found as fabric.tasks.inner
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Python27\lib\multiprocessing\forking.py", line 374, in main
self = load(from_parent)
File "C:\Python27\lib\pickle.py", line 1378, in load
return Unpickler(file).load()
File "C:\Python27\lib\pickle.py", line 858, in load
dispatch[key](self)
File "C:\Python27\lib\pickle.py", line 880, in load_eof
raise EOFError
EOFError_______________________________________________
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