Re: [Duplicity-talk] IOError: [Errno 22] Invalid argument

[Kenneth Loafman]

Marius Scurtescu wrote:
> After a terribly long run duplicity died with the following error:
> 
> Last full backup is too old, forcing full backup
> Traceback (most recent call last):
>   File "/usr/bin/duplicity", line 463, in <module>
>     with_tempdir(main)
>   File "/usr/bin/duplicity", line 458, in with_tempdir
>     fn()
>   File "/usr/bin/duplicity", line 444, in main
>     full_backup(col_stats)
>   File "/usr/bin/duplicity", line 155, in full_backup
>     bytes_written = write_multivol("full", tarblock_iter, globals.backend)
>   File "/usr/bin/duplicity", line 89, in write_multivol
>     at_end = gpg.GzipWriteFile(tarblock_iter, tdp.name,globals.volsize)
>   File "/usr/lib/python2.5/site-packages/duplicity/gpg.py", line 261,
> in GzipWriteFile
>     new_block = block_iter.next(bytes_to_go)
>   File "/usr/lib/python2.5/site-packages/duplicity/diffdir.py", line
> 407, in next
>     result = self.process(self.input_iter.next(), size)
>   File "/usr/lib/python2.5/site-packages/duplicity/diffdir.py", line
> 487, in process
>     data, last_block = self.get_data_block(fp, size - 512)
>   File "/usr/lib/python2.5/site-packages/duplicity/diffdir.py", line
> 508, in get_data_block
>     buf = fp.read(read_size)
>   File "/usr/lib/python2.5/site-packages/duplicity/diffdir.py", line
> 338, in read
>     buf = self.infile.read(length)
> IOError: [Errno 22] Invalid argument

Invalid argument is probably  a negative length in 'read(length)'.

I'll need to chase this further, but my guess is that in line 487 of the
traceback above, 'size - 512' is coming out negative.  I'll need to go
further back than that to find the real culprit.

...Ken

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