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mundus08 · 08-30-2014, 01:09 AM

I got the „OSError: [Errno 13] Permission denied“ after made a software update on my Synology DS211 NAS. Before calibre worked perfect for years in my single user environment.
I debugged the source code and found these lines in filenames.py:
# try:
# windows_hardlink(path, dest)
# return
# except:
# pass
…

def windows_hardlink(src, dest):
import win32file, pywintypes
try:
win32file.CreateHardLink(dest, src)
except pywintypes.error as e:
msg = u'Creating hardlink from %s to %s failed: %%s' % (src, dest)
raise Exception(msg % e)
src_size = os.path.getsize(src)
# We open and close dest, to ensure its directory entry is updated
# see http://blogs.msdn.com/b/oldnewthing/.../10251026.aspx
for i in range(10):
# If we are on a network filesystem, we have to wait for some indeterminate time, since
# network file systems are the best thing since sliced bread
try:
if windows_get_size(dest) == src_size:
return
except EnvironmentError:
pass
time.sleep(0.3)

For me it’s a bit weird to use a hardlink on a linux/samba based fileserver. I downloaded the calibre source from http://calibre-ebook.com/get-involved and switched to development mode as described in http://manual.calibre-ebook.com/develop.html. I commented out windows_hardlink call. Calibre 2 now works perfect again without any errors when importing or moving books.

08-30-2014, 01:09 AM	#50
mundus08 Junior Member Posts: 1 Karma: 10 Join Date: Aug 2014 Device: calibre	I got the „OSError: [Errno 13] Permission denied“ after made a software update on my Synology DS211 NAS. Before calibre worked perfect for years in my single user environment. I debugged the source code and found these lines in filenames.py: # try: # windows_hardlink(path, dest) # return # except: # pass … def windows_hardlink(src, dest): import win32file, pywintypes try: win32file.CreateHardLink(dest, src) except pywintypes.error as e: msg = u'Creating hardlink from %s to %s failed: %%s' % (src, dest) raise Exception(msg % e) src_size = os.path.getsize(src) # We open and close dest, to ensure its directory entry is updated # see http://blogs.msdn.com/b/oldnewthing/.../10251026.aspx for i in range(10): # If we are on a network filesystem, we have to wait for some indeterminate time, since # network file systems are the best thing since sliced bread try: if windows_get_size(dest) == src_size: return except EnvironmentError: pass time.sleep(0.3) For me it’s a bit weird to use a hardlink on a linux/samba based fileserver. I downloaded the calibre source from http://calibre-ebook.com/get-involved and switched to development mode as described in http://manual.calibre-ebook.com/develop.html. I commented out windows_hardlink call. Calibre 2 now works perfect again without any errors when importing or moving books.