[01:21 PM] 78Mb$ ls -ld /home/gwern/music
drwx------ 77 gwern gwern 4096 2010-10-11 11:44 /home/gwern/music/

Attached is also the output of ls -lR music/?field.comment=[01:21 PM] 78Mb$ ls 
-ld /home/gwern/music
drwx------ 77 gwern gwern 4096 2010-10-11 11:44 /home/gwern/music/

Attached is also the output of ls -lR music/

> I assume the backups are made with the user gwern?

So far as I am aware. I never added any options to rdiff-backup to
change users or anything.

backing up anything, even an empty directory, seems to fail:

[01:23 PM] 78Mb$ mkdir foo
[01:23 PM] 78Mb$ cp music.txt  foo/
`music.txt' -> `foo/music.txt'
[01:23 PM] 78Mb$ rdiff-backup foo bar
Exception 'RPath instance has no attribute 'inc_compressed'' raised of class 
'<type 'exceptions.AttributeError'>':
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 304, in 
error_check_Main
    try: Main(arglist)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 280, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 35, in Mirror
    DestS.set_rorp_cache(dest_rpath, source_rpiter, 0)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 154, in 
set_rorp_cache
    collated, Globals.pipeline_max_length*4, baserp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 290, in 
__init__
    self.metawriter = metadata.ManagerObj.GetWriter()
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 575, in 
GetWriter
    metawriter = self.get_meta_writer(typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 556, in 
get_meta_writer
    typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 551, in 
_writer_helper
    return flatfileclass(rp, 'w', callback = self.add_incrp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 382, in 
__init__
    if compress and check_path and not rp_base.isinccompressed():
  File "/usr/lib/pymodules/python2.6/rdiff_backup/rpath.py", line 1228, in 
isinccompressed
    return self.inc_compressed

Traceback (most recent call last):
  File "/usr/bin/rdiff-backup", line 30, in <module>
    rdiff_backup.Main.error_check_Main(sys.argv[1:])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 304, in 
error_check_Main
    try: Main(arglist)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 280, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 35, in Mirror
    DestS.set_rorp_cache(dest_rpath, source_rpiter, 0)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 154, in 
set_rorp_cache
    collated, Globals.pipeline_max_length*4, baserp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 290, in 
__init__
    self.metawriter = metadata.ManagerObj.GetWriter()
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 575, in 
GetWriter
    metawriter = self.get_meta_writer(typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 556, in 
get_meta_writer
    typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 551, in 
_writer_helper
    return flatfileclass(rp, 'w', callback = self.add_incrp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 382, in 
__init__
    if compress and check_path and not rp_base.isinccompressed():
  File "/usr/lib/pymodules/python2.6/rdiff_backup/rpath.py", line 1228, in 
isinccompressed
    return self.inc_compressed
AttributeError: RPath instance has no attribute 'inc_compressed'
[01:24 PM] 78Mb$ rm foo/music.txt 
[01:24 PM] 78Mb$ rdiff-backup foo bar
Found interrupted initial backup. Removing...
Warning: could not determine case sensitivity of source directory at
  foo
because we can't find any files with letters in them.
It will be treated as case sensitive.
Exception 'RPath instance has no attribute 'inc_compressed'' raised of class 
'<type 'exceptions.AttributeError'>':
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 304, in 
error_check_Main
    try: Main(arglist)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 280, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 35, in Mirror
    DestS.set_rorp_cache(dest_rpath, source_rpiter, 0)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 154, in 
set_rorp_cache
    collated, Globals.pipeline_max_length*4, baserp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 290, in 
__init__
    self.metawriter = metadata.ManagerObj.GetWriter()
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 575, in 
GetWriter
    metawriter = self.get_meta_writer(typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 556, in 
get_meta_writer
    typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 551, in 
_writer_helper
    return flatfileclass(rp, 'w', callback = self.add_incrp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 382, in 
__init__
    if compress and check_path and not rp_base.isinccompressed():
  File "/usr/lib/pymodules/python2.6/rdiff_backup/rpath.py", line 1228, in 
isinccompressed
    return self.inc_compressed

Traceback (most recent call last):
  File "/usr/bin/rdiff-backup", line 30, in <module>
    rdiff_backup.Main.error_check_Main(sys.argv[1:])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 304, in 
error_check_Main
    try: Main(arglist)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 280, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 35, in Mirror
    DestS.set_rorp_cache(dest_rpath, source_rpiter, 0)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 154, in 
set_rorp_cache
    collated, Globals.pipeline_max_length*4, baserp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/backup.py", line 290, in 
__init__
    self.metawriter = metadata.ManagerObj.GetWriter()
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 575, in 
GetWriter
    metawriter = self.get_meta_writer(typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 556, in 
get_meta_writer
    typestr, time)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 551, in 
_writer_helper
    return flatfileclass(rp, 'w', callback = self.add_incrp)
  File "/usr/lib/pymodules/python2.6/rdiff_backup/metadata.py", line 382, in 
__init__
    if compress and check_path and not rp_base.isinccompressed():
  File "/usr/lib/pymodules/python2.6/rdiff_backup/rpath.py", line 1228, in 
isinccompressed
    return self.inc_compressed
AttributeError: RPath instance has no attribute 'inc_compressed'


** Attachment added: "ls -lR music/"
   
https://bugs.launchpad.net/ubuntu/+source/rdiff-backup/+bug/658413/+attachment/1709552/+files/music.txt

-- 
rdiff-backup crashes with compression error (inc_compressed)
https://bugs.launchpad.net/bugs/658413
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