[rdiff-backup-users] Stale NFS file handle error with unfsd and symbolic file

[Toshiyuki Ishimura]

I encount "Stale NFS file handle" error when backing up to the nfs
mouted filesystem.
This is on Debian Etch machines with rdiff-backup 1.1.5.
The unfsd 0.9.15 (user-mode nfs daemon) is running on remote machine.

There is no problem with normail files as follow.
local:~$ mkdir hoge mnt
local:~$ touch hoge/foo
local:~$ mount -t nfs -o soft,rw,intr remote:/tmp mnt
local:~$ rdiff-backup hoge mnt

However, when "hoge" directory has a symbolic file, "Stale NFS file
handle" error occurred.
local:~$ mkdir hoge mnt
local:~$ touch hoge/foo
local:~$ (cd hoge; ln -s foo bar)
local:~$ mount -t nfs -o soft,rw,intr remote:/tmp mnt
local:~$ rdiff-backup hoge mnt
(error detail in the attachment)

When using kernel-mode nfsd, this error never occurred.
Any helps?

Thanks.

--
Toshiyuki Ishimura

Exception '[Errno 116] Stale NFS file handle: '/mnt/backup/rdiff-backup.tmp.1'' 
raised of class 'exceptions.OSError':
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 295, in 
error_check_Main
    try: Main(arglist)
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 315, in 
Main
    take_action(rps)
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 271, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 337, in 
Backup
    backup.Mirror(rpin, rpout)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 38, in 
Mirror
    DestS.patch(dest_rpath, source_diffiter)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 218, in 
patch
    ITR(diff.index, diff)
  File "/var/lib/python-support/python2.4/rdiff_backup/rorpiter.py", line 281, 
in __call__
    last_branch.fast_process(*args)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 515, in 
fast_process
    if self.patch_to_temp(mirror_rp, diff_rorp, tf):
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 536, in 
patch_to_temp
    if not self.patch_snapshot_to_temp(diff_rorp, new):
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 553, in 
patch_snapshot_to_temp
    rpath.copy_attribs(diff_rorp, new)
  File "/var/lib/python-support/python2.4/rdiff_backup/rpath.py", line 161, in 
copy_attribs
    rpout.chown(*rpout.conn.user_group.map_rpath(rpin))
  File "/var/lib/python-support/python2.4/rdiff_backup/rpath.py", line 853, in 
chown
    try: self.conn.C.lchown(self.path, uid, gid)

ACLs not supported by filesystem at hoge
-----------------------------------------------------------------
Detected abilities for source (read only) file system:
  Access control lists                         Off
  Extended attributes                          On
  Case sensitivity                             On
  Mac OS X style resource forks                Off
  Mac OS X Finder information                  Off
-----------------------------------------------------------------
Extended attributes not supported by filesystem at 
/mnt/backup/rdiff-backup-data/rdiff-backup.tmp.0
ACLs not supported by filesystem at 
/mnt/backup/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
  Extended filenames                           On
  Access control lists                         Off
  Extended attributes                          Off
  Case sensitivity                             On
  Mac OS X style resource forks                Off
  Mac OS X Finder information                  Off
-----------------------------------------------------------------
Starting mirror hoge to /mnt/backup
Processing changed file .
Processing changed file bar
Traceback (most recent call last):
  File "/usr/bin/rdiff-backup", line 23, in ?
    rdiff_backup.Main.error_check_Main(sys.argv[1:])
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 295, in 
error_check_Main
    try: Main(arglist)
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 315, in 
Main
    take_action(rps)
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 271, in 
take_action
    elif action == "backup": Backup(rps[0], rps[1])
  File "/var/lib/python-support/python2.4/rdiff_backup/Main.py", line 337, in 
Backup
    backup.Mirror(rpin, rpout)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 38, in 
Mirror
    DestS.patch(dest_rpath, source_diffiter)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 218, in 
patch
    ITR(diff.index, diff)
  File "/var/lib/python-support/python2.4/rdiff_backup/rorpiter.py", line 281, 
in __call__
    last_branch.fast_process(*args)
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 515, in 
fast_process
    if self.patch_to_temp(mirror_rp, diff_rorp, tf):
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 536, in 
patch_to_temp
    if not self.patch_snapshot_to_temp(diff_rorp, new):
  File "/var/lib/python-support/python2.4/rdiff_backup/backup.py", line 553, in 
patch_snapshot_to_temp
    rpath.copy_attribs(diff_rorp, new)
  File "/var/lib/python-support/python2.4/rdiff_backup/rpath.py", line 161, in 
copy_attribs
    rpout.chown(*rpout.conn.user_group.map_rpath(rpin))
  File "/var/lib/python-support/python2.4/rdiff_backup/rpath.py", line 853, in 
chown
    try: self.conn.C.lchown(self.path, uid, gid)
OSError: [Errno 116] Stale NFS file handle: '/mnt/backup/rdiff-backup.tmp.1'