Re: [rdiff-backup-users] Truncated header string

[Sheldon Hearn]

Any takers on this?  I'm surprised that this apparent show stopper has
no useful advice in the archives or the FAQ.  Is it a case of "maybe it
works for you, if not, you're on your own"?

FWIW, I got one private reply containing a suggestion that made no
difference. :-)

Ciao,
Sheldon.

On Wed, 2005-03-09 at 16:20 +0200, Sheldon Hearn wrote:
> Hi folks,
> 
> I'm very excited about rdiff-backup's value offering.  It's a step
> forward from Grenville Armitage approach of using rsync and cpio.  I'd
> like to take it further eventually, by adding permissions metadata so
> that it can run as an unpriveleged user, and support NTFS ownership
> information.
> 
> Unfortuntely, I can't even get it to restore from remote backup yet.
> 
> I created my backup as follows:
> 
> rdiff-backup ~/backup-test address@hidden::backup-test
> # Make some changes to ~/backup-test on the local host
> rdiff-backup ~/backup-test address@hidden::backup-test
> # Repeat, and be amazed at the elegance of rdiff-backup-data on
> # the remote host.
> 
> Then I waited 20 minutes and tried to restore as follows:
> 
> rdiff-backup --restore-as-of 10m \
>     address@hidden::backup-test \
>     /home/sheldonh/restore-test
> 
> And lo, I got this error:
> 
> Truncated header string (problem probably originated remotely)
> 
> The trace is attached.
> 
> The two hosts are connected on mostly idle 100BaseTX ethernet, and I
> don't get connection drops between them.
> 
> Does anyone have any ideas?  I'm using rdiff-backup-0.13.4 on Gentoo
> Linux (2.6.10) with glibc-2.3.4.20040808.  I've checked the FAQ and
> searched the mailing list archive.  This question has been asked before,
> but I couldn't find any appropriate answers.  For some people, they
> really did have a flakey network situation.  But I don't,
> 
> Thanks,
> Sheldon.
> plain text document attachment (trace.txt)
> Warning: ownership cannot be changed on filesystem at 
> /home/sheldonh/restore-test
> -----------------------------------------------------------------
> Detected abilities for destination (read/write) file system:
>   Characters needing quoting                   ''
>   Ownership changing                           Off
>   Hard linking                                 On
>   fsync() directories                          On
>   Directory inc permissions                    On
>   Access control lists                         Off
>   Extended attributes                          Off
>   Mac OS X style resource forks                Off
>   Mac OS X Finder information                  Off
> -----------------------------------------------------------------
> -----------------------------------------------------------------
> Detected abilities for source (read only) file system:
>   Access control lists                         Off
>   Extended attributes                          Off
>   Mac OS X style resource forks                Off
>   Mac OS X Finder information                  Off
> -----------------------------------------------------------------
> Traceback (most recent call last):
>   File "/usr/bin/rdiff-backup", line 23, in ?
>     rdiff_backup.Main.Main(sys.argv[1:])
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 259, in 
> Main
>     take_action(rps)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 239, in 
> take_action
>     elif action == "restore-as-of": Restore(rps[0], rps[1], 1)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 465, in 
> Restore
>     inc_rpath, dest_rp, time)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 45, 
> in Restore
>     TargetS.patch(target, diff_iter)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 309, 
> in patch
>     ITR(diff.index, diff)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rorpiter.py", line 279, 
> in __call__
>     last_branch.fast_process(*args)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 625, 
> in fast_process
>     self.patch_to_temp(rp, diff_rorp, tf)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 633, 
> in patch_to_temp
>     rpath.copy(diff_rorp, new)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rpath.py", line 96, in 
> copy
>     if rpin.isreg(): copy_reg_file(rpin, rpout, compress)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rpath.py", line 118, in 
> copy_reg_file
>     rpout.write_from_fileobj(rpin.open("rb"), compress = compress)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rpath.py", line 947, in 
> write_from_fileobj
>     copyfileobj(fp, outfp)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rpath.py", line 58, in 
> copyfileobj
>     inbuf = inputfp.read(blocksize)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/rpath.py", line 1155, 
> in read
>     def read(self, length = -1): return self.file.read(length)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/iterfile.py", line 117, 
> in read
>     if not self.addtobuffer(): break
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/iterfile.py", line 132, 
> in addtobuffer
>     type, data = self.iwf._get()
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/iterfile.py", line 401, 
> in _get
>     if not self.buf: self.buf += self.file.read()
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 513, in read
>     return self.connection.VirtualFile.readfromid(self.id, length)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 445, in __call__
>     return apply(self.connection.reval, (self.name,) + args)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 367, in reval
>     if isinstance(result, Exception): raise result
> AssertionError: (('diskimages',), ('diskimages', 'dell', 'ED5049A0.tar.gz'))
> Traceback (most recent call last):
>   File "/usr/bin/rdiff-backup", line 23, in ?
>     rdiff_backup.Main.Main(sys.argv[1:])
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 259, in 
> Main
>     take_action(rps)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 227, in 
> take_action
>     connection.PipeConnection(sys.stdin, sys.stdout).Server()
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 352, in Server
>     self.get_response(-1)
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 314, in get_response
>     try: req_num, object = self._get()
>   File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 
> 230, in _get
>     raise ConnectionReadError("Truncated header string (problem "
> rdiff_backup.connection.ConnectionReadError: Truncated header string (problem 
> probably originated remotely)
> _______________________________________________
> rdiff-backup-users mailing list at address@hidden
> http://lists.nongnu.org/mailman/listinfo/rdiff-backup-users
> Wiki URL: http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki