[rdiff-backup-users] No space left/setxattr problem.

[apatca]

Hi,

I need help tracking down this problem with rdiff-backup.

Today my weekly backups failed with IOError: [Errno 28] No space left
on device, as have all following attempts to --check-destination-dir.

There were 255 GB free on the backups drive and 14 GB on / (where /tmp
resides), both more than enough. Additionaly, pointing --tempdir or
the TMPDIR, TMP and TEMP variables to a different location made no
difference. I'm quite convinced lack of disk space is not actually
the problem.

Since the last line in the traceback is
"rp.conn.xattr.setxattr(rp.path, name, value, 0, rp.issym())", I
believe the error is related to extended file attributes. I have found
similar reports, like https://savannah.nongnu.org/bugs/?37415 , but in
my case I am backing up an XFS volume over SSH to an EXT4 one, and
needless to say had never encountered this problem.

Both machines are running rdiff-backup 1.2.8-7 on Debian, and have been
running the same version for at least a month withouth problems. I am
completely at a loss as to what has caused this problem and how to fix
it.

What follows is the full error message as it was mailed to me by cron.
The error took place when trying to back up my home directory, but as
you can see afterwards rdiff-backup seems to have successfully
listed and deleted and old increment from that same destination
directory (the other three messages correspond to three other
directories, which backup was skipped for and can still list
increments just fine).



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 343, in
Backup backup.Mirror_and_increment(rpin, rpout, incdir) File
"/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 51, in
Mirror_and_increment DestS.patch_and_increment(dest_rpath,
source_diffiter, inc_rpath) File
"/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 243, in
patch_and_increment 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 692, 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
343, in Backup backup.Mirror_and_increment(rpin, rpout, incdir)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line
51, in Mirror_and_increment DestS.patch_and_increment(dest_rpath,
source_diffiter, inc_rpath) File
"/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 243, in
patch_and_increment 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 692, 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 Fatal Error:
Lost connection to the remote system Fatal Error: Previous backup
to /backups/harvey-home seems to have failed. Rerun rdiff-backup with
--check-destination-dir option to revert directory to state before
unsuccessful session. Deleting increment at time: Sat Jul 25 04:03:43
2015 Deleting increment at time:
Sun Sep 28 13:13:37 2014
Deleting increment at time:
Sat Jul 25 04:14:37 2015
No increments older than Thu Jul 30 05:04:21 2015 found, exiting.