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[rdiff-backup-users] "Exception '[Errno 112] Host is down:" along with -

From: Gregor Zattler
Subject: [rdiff-backup-users] "Exception '[Errno 112] Host is down:" along with --exclude-other-filesystems
Date: Wed, 22 Aug 2012 09:05:17 +0200
User-agent: Mutt/1.5.21 (2010-09-15) 
Dear rdiff-backup community,

today rdiff-backup throw an exception 

Exception '[Errno 112] Host is down: '/mnt/XXX/XXXXXXXXXXX'' raised of class 
'<type 'exceptions.OSError'>':

because the host which provided a samba share was not reachable.
This astonishes me because I run rdiff-backup with option
--exclude-other-filesystems and /mnt/XXX/XXXXXXXXXXX is a mount
point for another file system (which normally is not mounted
while backing up.  Therefore this exception never occurred
before).

Why then is it exceptional that the samba share is not accessible
any more?  Shouldn't it not be touched since it is on another
file system??


Any ideas how to avoid this?

Thanks for your input, Gregor


This is rdiff-backup 1.2.8 on a recent debian testing distribution.

This is how I call rdiff-backup:

DEFAULTOPTIONS='  --terminal-verbosity=4 --verbosity=5  --print-statistics 
--exclude-other-filesystems --no-compression-regexp 
"(?i).*\.(gz|z|bz|bz2|xz|lzma|tgz|tbz2|7z|cpgz|zip|lzh|zoo|lharc|rar|rz|arj|rpm|deb|pgp|gpg|jpeg|jpg|gif|png|jp2|mp3|flac|ogg|avi|wmv|wmf|mpeg|mpg|rm|mov)$"'

$rdiffbackup  ${DEFAULTOPTIONS}  --backup-mode  --exclude /home  --exclude /etc 
 --exclude /root --exclude /usr/local  / 
"${RDIFFBACKUPDESTINATION}/system-cache"

This is from the log file 
/mnt/backup/rdiff-backup/XXXXXXXX/system-cache/rdiff-backup-data/backup.log:


Starting increment operation / to /mnt/backup/rdiff-backup/XXXXXXXX/system-cache
Processing changed file .
Incrementing mirror file /mnt/backup/rdiff-backup/XXXXXXXX/system-cache
Exception '[Errno 112] Host is down: '/mnt/XXX/XXXXXXXXXXX'' raised of class 
'<type 'exceptions.OSError'>':
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/robust.py", line 32, in 
check_common_error
    try: return function(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1149, in 
append
    return self.__class__(self.conn, self.base, self.index + (ext,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 884, in 
__init__
    else: self.setdata()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 908, in 
setdata
    self.data = self.conn.rpath.make_file_dict(self.path)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 287, in 
make_file_dict
    return C.make_file_dict(filename)



The output of the command was captured in another log file and is
a bit longer:

Exception '[Errno 112] Host is down: '/mnt/XXX/XXXXXXXXXXX'' raised of class 
'<type 'exceptions.OSError'>':
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/robust.py", line 32, in 
check_common_error
    try: return function(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1149, in 
append
    return self.__class__(self.conn, self.base, self.index + (ext,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 884, in 
__init__
    else: self.setdata()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 908, in 
setdata
    self.data = self.conn.rpath.make_file_dict(self.path)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 287, in 
make_file_dict
    return C.make_file_dict(filename)

Exception '[Errno 112] Host is down: '/mnt/XXX/XXXXXXXXXXX'' 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 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 241, in 
patch_and_increment
    for diff in rorpiter.FillInIter(source_diffiter, dest_rpath):
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 177, 
in FillInIter
    for rp in rpiter:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 103, in 
get_diffs
    for dest_sig in dest_sigiter:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 166, in 
get_sigs
    for src_rorp, dest_rorp in cls.CCPP:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 320, in 
next
    source_rorp, dest_rorp = self.iter.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 92, in 
Collate2Iters
    try: relem1 = riter1.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 342, 
in next
    next_elem = self.iter.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/selection.py", line 132, 
in Iterate_fast
    try: rpath, val = diryield_stack[-1].next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/selection.py", line 120, 
in diryield
    rpath.append, (filename,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/robust.py", line 32, in 
check_common_error
    try: return function(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1149, in 
append
    return self.__class__(self.conn, self.base, self.index + (ext,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 884, in 
__init__
    else: self.setdata()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 908, in 
setdata
    self.data = self.conn.rpath.make_file_dict(self.path)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 287, in 
make_file_dict
    return C.make_file_dict(filename)

Using rdiff-backup version 1.2.8
Unable to import win32security module. Windows ACLs
not supported by filesystem at /
escape_dos_devices not required by filesystem at /
-----------------------------------------------------------------
Detected abilities for source (read only) file system:
  Access control lists                         On
  Extended attributes                          On
  Windows access control lists                 Off
  Case sensitivity                             On
  Escape DOS devices                           Off
  Escape trailing spaces                       Off
  Mac OS X style resource forks                Off
  Mac OS X Finder information                  Off
-----------------------------------------------------------------
Unable to import win32security module. Windows ACLs
not supported by filesystem at 
/mnt/backup/rdiff-backup/XXXXXXXX/system-cache/rdiff-backup-data/rdiff-backup.tmp.0
escape_dos_devices not required by filesystem at 
/mnt/backup/rdiff-backup/XXXXXXXX/system-cache/rdiff-backup-data/rdiff-backup.tmp.0
-----------------------------------------------------------------
Detected abilities for destination (read/write) file system:
  Ownership changing                           On
  Hard linking                                 On
  fsync() directories                          On
  Directory inc permissions                    On
  High-bit permissions                         On
  Symlink permissions                          Off
  Extended filenames                           On
  Windows reserved filenames                   Off
  Access control lists                         On
  Extended attributes                          On
  Windows access control lists                 Off
  Case sensitivity                             On
  Escape DOS devices                           Off
  Escape trailing spaces                       Off
  Mac OS X style resource forks                Off
  Mac OS X Finder information                  Off
-----------------------------------------------------------------
Backup: must_escape_dos_devices = 0
Starting increment operation / to /mnt/backup/rdiff-backup/XXXXXXXX/system-cache
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 241, in 
patch_and_increment
    for diff in rorpiter.FillInIter(source_diffiter, dest_rpath):
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 177, 
in FillInIter
    for rp in rpiter:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 103, in 
get_diffs
    for dest_sig in dest_sigiter:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 166, in 
get_sigs
    for src_rorp, dest_rorp in cls.CCPP:
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/backup.py", line 320, in 
next
    source_rorp, dest_rorp = self.iter.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 92, in 
Collate2Iters
    try: relem1 = riter1.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rorpiter.py", line 342, 
in next
    next_elem = self.iter.next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/selection.py", line 132, 
in Iterate_fast
    try: rpath, val = diryield_stack[-1].next()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/selection.py", line 120, 
in diryield
    rpath.append, (filename,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/robust.py", line 32, in 
check_common_error
    try: return function(*args)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 1149, in 
append
    return self.__class__(self.conn, self.base, self.index + (ext,))
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 884, in 
__init__
    else: self.setdata()
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 908, in 
setdata
    self.data = self.conn.rpath.make_file_dict(self.path)
  File "/usr/lib/python2.7/dist-packages/rdiff_backup/rpath.py", line 287, in 
make_file_dict
    return C.make_file_dict(filename)
OSError: [Errno 112] Host is down: '/mnt/XXX/XXXXXXXXXXX'




Ciao, Gregor
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