[Rdiff-backup-bugs] [bug #37415] Spurious "IOError: [Errno 28] No space left on device" when backing up NTFS to EXT4 in Ubuntu 12.04

[David W]

URL:
  <http://savannah.nongnu.org/bugs/?37415>

                 Summary: Spurious "IOError: [Errno 28] No space left on
device" when backing up NTFS to EXT4 in Ubuntu 12.04
                 Project: rdiff-backup
            Submitted by: davewood
            Submitted on: Fri 21 Sep 2012 02:51:05 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

I have backed up this filesystem many, many times. Suddenly, with Ubuntu
12.04, it was no longer possible. Some tiny files would bomb out with Errno 28
when backing up. Full stack trace below.

I verified that enormous amounts of free disk space were present, including on
the specifically given tempdir, as well as enormous numbers of free inodes. 

Looking closely at the failure, which is happening on xattr setting, I see
rdiff-backup committers have already excluded many kinds of errors with a log
message. 

I suggest adding errno.ENOSPC to the list, since Ubuntu 12.04 now generates
this as well. In other words, eas_acls.py line 119 would read:

                                                errno.ENOENT, errno.EINVAL, 
errno.ENOSPC):

Full stack trace:

Exception '[Errno 28] No space left on device' raised of class '<type
'exceptions.IOError'>':
  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 281,
in __call__
    last_branch.fast_process(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 529, in
fast_process
    if self.patch_to_temp(mirror_rp, diff_rorp, tf):
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 559, in
patch_to_temp
    rpath.copy_attribs(diff_rorp, new)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 181, in
copy_attribs
    if Globals.eas_write: rpout.write_ea(rpin.get_ea())
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1347, in
write_ea
    ea.write_to_rp(self)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/eas_acls.py", line 114,
in write_to_rp
    rp.conn.xattr.setxattr(rp.path, name, value, 0, rp.issym())

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 281,
in __call__
    last_branch.fast_process(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 529, in
fast_process
    if self.patch_to_temp(mirror_rp, diff_rorp, tf):
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 559, in
patch_to_temp
    rpath.copy_attribs(diff_rorp, new)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 181, in
copy_attribs
    if Globals.eas_write: rpout.write_ea(rpin.get_ea())
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1347, in
write_ea
    ea.write_to_rp(self)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/eas_acls.py", line 114,
in write_to_rp
    rp.conn.xattr.setxattr(rp.path, name, value, 0, rp.issym())
IOError: [Errno 28] No space left on device
Traceback (most recent call last):
  File "./backup.py", line 226, in <module>
    subprocess.check_call(rdiffcommand)
  File "/usr/lib/python2.7/subprocess.py", line 511, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['rdiff-backup',
'--exclude-other-filesystems', '--print-statistics', '--tempdir',
'/mnt/backup/tempdir', '-v5', '--exclude-globbing-filelist',
'rdiff-exclusions', '--exclude-globbing-filelist',
'rdiff-exclusions-localhost-media,EC6C26516C2616BC',
'/media/EC6C26516C2616BC',
'/mnt/backup/localhost/fs-,media,EC6C26516C2616BC']' returned non-zero exit
status 1

Until this is fixed, NTFS cannot be backed up on Ubuntu with rdiff-backup,
which is a problem to anyone hoping to back up their dual-boot machine.




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