Re: [rdiff-backup-users] Native windows build - issue with long path names

[Josh Nisly]

I looked into this a bit today. Windows does throw a different exception 
on long file names than unix (a WindowsError (derived from OSError, 
derived from EnvironmentError), with the errno set to 206, which doesn't 
map to anything valid on unix.) However, when I added a check for this 
to the places that already check for an ENAMETOOLONG exception, it still 
failed.

JoshN

Ryan How wrote:
> Just to add, I should point out it is a fatal error in that the whole 
> backup fails at that point. It isn't just those files that don't get 
> backed up.
>
> Ryan How wrote:
> > Hi,
> >
> > I did a few searches, but I couldn't find any issues discussed about 
> > long path names in the native windows build.
> >
> > I have been having issues with the 255 char limit (or round abouts) 
> > in pathnames, but I am unsure as to why because I using the native 
> > windows build (which shouldn't have this limit?). The error 
> > originates in os.pyc (which, I have no python experience, but isn't 
> > an rdiff-backup source file?). I get the same error when using dos 
> > paths (ie. c:\blah) and UNC paths (which otherwise seem to work well 
> > with the native windows build, yay). I could understand the issue 
> > with the dos paths, but not with the UNC paths. I have a feeling this 
> > may actually be a python issue?
> >
> > Error is below.
> >
> > Cheers,
> >
> > Ryan
> >
> >
> > Processing changed file Documents and Settings/ryan/Local 
> > Settings/Temp/test_dir_980382089/deep1/deep1_1/deep1_1_1/deep1_1_1_1/deep1_1_1_1_1/deep1_1_1_1_1_1/deep1_1_1_1_1_1_1/deep1_1_1_1_1_1_1_1 
> >
> > Exception '[Error 206] The filename or extension is too long: 
> > '\\\\127.0.0.1\\c$\\Documents and Settings\\ryan\\Local 
> > Settings\\Temp\\test_dir_2042584358/rdiff-backup-data/increments/Documents 
> > and Settings/ryan/Local 
> > Settings/Temp/test_dir_980382089/deep1/deep1_1/deep1_1_1/deep1_1_1_1/deep1_1_1_1_1/deep1_1_1_1_1_1/deep1_1_1_1_1_1_1'' 
> > raised of class '<type 'exceptions.WindowsError'>':
> >  File "rdiff_backup\Main.pyc", line 302, in error_check_Main
> >  File "rdiff_backup\Main.pyc", line 322, in Main
> >  File "rdiff_backup\Main.pyc", line 278, in take_action
> >  File "rdiff_backup\Main.pyc", line 344, in Backup
> >  File "rdiff_backup\backup.pyc", line 38, in Mirror
> >  File "rdiff_backup\backup.pyc", line 232, in patch
> >  File "rdiff_backup\rorpiter.pyc", line 284, in __call__
> >  File "rdiff_backup\backup.pyc", line 622, in start_process
> >  File "rdiff_backup\longname.pyc", line 203, in get_mirror_inc_rps
> >  File "rdiff_backup\longname.pyc", line 189, in find_inc_pair
> >  File "rdiff_backup\longname.pyc", line 128, in check_new_index
> >  File "rdiff_backup\longname.pyc", line 111, in wrap_call
> >  File "rdiff_backup\longname.pyc", line 122, in make_parent
> >  File "rdiff_backup\rpath.pyc", line 964, in makedirs
> >  File "os.pyc", line 171, in makedirs
> >
> > Traceback (most recent call last):
> >  File "rdiff-backup", line 23, in <module>
> >  File "rdiff_backup\Main.pyc", line 302, in error_check_Main
> >  File "rdiff_backup\Main.pyc", line 322, in Main
> >  File "rdiff_backup\Main.pyc", line 278, in take_action
> >  File "rdiff_backup\Main.pyc", line 344, in Backup
> >  File "rdiff_backup\backup.pyc", line 38, in Mirror
> >  File "rdiff_backup\backup.pyc", line 232, in patch
> >  File "rdiff_backup\rorpiter.pyc", line 284, in __call__
> >  File "rdiff_backup\backup.pyc", line 622, in start_process
> >  File "rdiff_backup\longname.pyc", line 203, in get_mirror_inc_rps
> >  File "rdiff_backup\longname.pyc", line 189, in find_inc_pair
> >  File "rdiff_backup\longname.pyc", line 128, in check_new_index
> >  File "rdiff_backup\longname.pyc", line 111, in wrap_call
> >  File "rdiff_backup\longname.pyc", line 122, in make_parent
> >  File "rdiff_backup\rpath.pyc", line 964, in makedirs
> >  File "os.pyc", line 171, in makedirs
> > WindowsError: [Error 206] The filename or extension is too long: 
> > '\\\\127.0.0.1\\c$\\Documents and Settings\\ryan\\Local 
> > Settings\\Temp\\test_dir_2042584358/rdiff-backup-data/increments/Documents 
> > and Settings/ryan/Local 
> > Settings/Temp/test_dir_980382089/deep1/deep1_1/deep1_1_1/deep1_1_1_1/deep1_1_1_1_1/deep1_1_1_1_1_1/deep1_1_1_1_1_1_1' 
> >
> >
> >
> >
> >
> > _______________________________________________
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> > Wiki URL: 
> > http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki
>
>
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