Issue with dokan

[GoogleCodeExporter]

I am getting the following errors while using dokan:-
1. When I mount one file in a MountFS object and expose it using dokan, it 
works fine. But when I mount 2 similar MountFS objects and expose the MountFS 
using dokan I get the following error:-

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\fs\expose\dokan\__init__.py", line 940, in
 mount
    mp = MountProcess(fs, drive, kwds)
  File "C:\Python27\lib\site-packages\fs\expose\dokan\__init__.py", line 996, in
 __init__
    cmd = cmd % (repr(cPickle.dumps((fs,drive,dokan_opts,nowait),-1)),)
cPickle.PicklingError: Can't pickle <type 'function'>: attribute lookup __builti
n__.function failed

Here is the code which works:-

from fs.mountfs import MountFS
from fs.expose import dokan
import urllib2
class newfile:
    def __init__(self,url):
        self.url=url
        self.mode='rb'
        self.closed=False
    def open(self,mode):
        self.file=urllib2.urlopen(self.url)
        self.position=0
        return True
    def seek(self,offset):
        b=urllib2.urlopen(self.url).headers.get('content-length')
    c=str(offset)
    headers={'Range': ('bytes='+c+'-'+b)}
    ff=urllib2.Request(self.url,headers=headers)
    self.file=urllib2.urlopen(ff)
    self.position=offset
    return offset
    def read(self,length=None):
    if length==None:
            c=self.file.read()
            return c
    c=self.file.read(length)
    return c
    def close(self):
    self.closed=True
    return True
cc=MountFS()
def ff(b):
    def f(x,y='rb',*z):
        a1=newfile(b)
    a1.open(y)
    return a1
    def g(*x):
    b1=urllib2.urlopen(b)
    c1=dict(b1.headers)
    d1=int(c1.pop('content-length'))
    c1['size']=d1
    return c1
    return f,g
b1='http://www.example.com/new.pdf'
cc.mountfile('new.pdf',*ff(b1))
dokan.mount(cc,'Q')

But if I add the following 2 lines, it doesn't work:-

b2='http://www.example.com/desktop.ini'
cc.mountfile('desktop.ini',*ff(b2))

Original issue reported on code.google.com by chandana...@gmail.com on 17 Mar 2013 at 10:45

[GoogleCodeExporter]

For pickeling Problems you could test this Mounter Lib:
https://groups.google.com/forum/?fromgroups=#!topic/pyfilesystem-discussion/boH9
GjXMwmc

Original comment by mkhom...@googlemail.com on 25 Mar 2013 at 4:51