[rdiff-backup-users] rdiff-backup restore crash

[Kareem Dana]

Hello,

I get the following crash from rdiff-backup when trying to restore
certain directories. For some directories it works fine. Here is an
example:

$ rdiff-backup -r now address@hidden::/backup/backup/bender/home/kcd/tmp tmp-new

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 250, in 
Main
    take_action(rps)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 224, in 
take_action
    elif action == "restore-as-of": RestoreAsOf(rps[0], rps[1])
  File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 395, in 
RestoreAsOf
    restore_common(rpin, target, time)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 407, in 
restore_common
    restore.Restore(mirror, inc_rpath, target, time)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 50, in 
Restore
    TargetS.patch(target, diff_iter)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 270, 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 586, in 
fast_process
    self.patch_to_temp(rp, diff_rorp, tf)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/restore.py", line 594, 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 823, 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 948, 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 508, 
in read
    return self.connection.VirtualFile.readfromid(self.id, length)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 440, 
in __call__
    return apply(self.connection.reval, (self.name,) + args)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 362, 
in reval
    if isinstance(result, Exception): raise result
AssertionError: (('home', 'kcd', '.transgaming'), ('home', 'kcd', 
'.transgaming', 'c_drive', 'windows', 'system32', 'stdole32.tlb'))
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 250, in 
Main
    take_action(rps)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/Main.py", line 220, in 
take_action
    connection.PipeConnection(sys.stdin, sys.stdout).Server()
  File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 347, 
in Server
    self.get_response(-1)
  File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 309, 
in get_response
    try: req_num, object = self._get()
  File "/usr/lib/python2.3/site-packages/rdiff_backup/connection.py", line 225, 
in _get
    raise ConnectionReadError("Truncated header string (problem "
rdiff_backup.connection.ConnectionReadError: Truncated header string (problem 
probably originated remotely)




What does this error mean? rdiff-backup has been working fine between
both computers just fine. Both have rdiff-backup 0.12.6 and python
2.3.3. Also, on an unrelated note, the .transgaming directory in my
backup folder does not have any increments. Just one current mirror. Is
that because it has not changed at all since the original backup? and is
it correct to use the "-r now" option to restore from the current
mirror, and then "-r 3D" etc.. to restore from previous increments?

Thanks,
Kareem