[rdiff-backup-users] Read-Only Error with Encrypted Volume

[Rolf Inator]

Dear List,

 

I was moving from dejavu (on my Ubuntu machine) to rdiff-backup, because it seemed to have finer granularity for restoring actions. Unfortunately I tried to back my system up the second time now, but it aborted with an error. This is my setup:
sudo losetup /dev/loop0 backup_file
sudo cryptsetup luksOpen /dev/loop0 container
sudo mount -t ext4 /dev/mapper/container /media/homeuser/encryptedmount

Then I start the backup with rdiff-backup:
sudo rdiff-backup /home/homeuser/ /media/homeuser/encryptedmount/home/

 

After a while the system freezes until I unplug the external drive, where the backup goes to, with the following error message:

address@hidden:~$ sudo rdiff-backup /home/homeuser/ /media/homeuser/encryptedmount/home/
Exception '[Errno 30] Read-only file system: '/media/homeuser/encryptedmount/home/runs/131206-200557'' raised of class '<type 'exceptions.OSError'>':
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 304, in error_check_Main
    try: Main(arglist)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 280, in take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 38, in Mirror
    DestS.patch(dest_rpath, source_diffiter)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 232, in patch
    ITR(diff.index, diff)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 277, in __call__
    if self.finish_branches(index) is None:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 229, in finish_branches
    to_be_finished.end_process()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 664, in end_process
    rpath.copy_attribs(self.dir_update, self.base_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 180, in copy_attribs
    rpout.chown(*rpout.conn.user_group.map_rpath(rpin))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 977, in chown
    else: os.chown(self.path, uid, gid)

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/python2.7/dist-packages/rdiff_backup/Main.py", line 304, in error_check_Main
    try: Main(arglist)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 324, in Main
    take_action(rps)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 280, in take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/Main.py", line 346, in Backup
    backup.Mirror(rpin, rpout)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 38, in Mirror
    DestS.patch(dest_rpath, source_diffiter)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 232, in patch
    ITR(diff.index, diff)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 277, in __call__
    if self.finish_branches(index) is None:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 229, in finish_branches
    to_be_finished.end_process()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 664, in end_process
    rpath.copy_attribs(self.dir_update, self.base_rp)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 180, in copy_attribs
    rpout.chown(*rpout.conn.user_group.map_rpath(rpin))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 977, in chown
    else: os.chown(self.path, uid, gid)
OSError: [Errno 30] Read-only file system: '/media/homeuser/encryptedmount/home/runs/131206-200557'

 

Is there anything that I am doing wrong?

 

Best and thanks,

Rolf