Re: cross-platform backup tool Rdiff-backup crashes when backing up to NFS (Devuan)

[Tobias Leupold]

Am Dienstag, 22. November 2022, 07:30:00 CET schrieb Eric Zolf:
> Hi Tobias,
> 
> Avoid cross-posting, this just creates noise, and then part of the
> information is one of the places and not the other.

Sorry, this was before I could figure out what was wrong, and before I could 
get it to work. My automated backup was broken after migrating my server from 
Gentoo to Devuan, and I didn't notice this at once -- so I was a bit uneasy 
;-)

> Conversation continues at
> https://github.com/rdiff-backup/rdiff-backup/issues/789
> 
> On 21/11/2022 10:18, Tobias Leupold wrote:
> > Hi all,
> > 
> > I've been using rdiff-backup without any problem now for years, but now
> > I have one: I'm about to migrate a small server from Gentoo to Devuan. I
> > got most of my stuff working, but my automated backup to an NFS share
> > doesn't work. Rdiff-backup crashes.
> > 
> > I can't even backup a single file to the share:
> >      # cd
> >      # mkdir foo
> >      # touch foo/bar
> >      # rdiff-backup foo/ /nas/backup/test/
> 
> Is this really the only thing you backup? Could you then call
> `rdiff-backup -v9 foo/ /nas/backup/test/` and attach the full output to
> the issue (the logs are under /nas/backup/test/rdiff-backup-data)?
> 
> Thanks, Eric
> 
> >      Exception '[Errno 22] Invalid argument' raised of class '<class
> > 
> > 'OSError'>':
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 395, in error_check_Main
> > 
> >          Main(arglist)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 417, in Main
> > 
> >          take_action(rps)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 353, in take_action
> > 
> >          Backup(rps[0], rps[1])
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 442, in Backup
> > 
> >          backup.Mirror(rpin, rpout)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 39, in Mirror
> > 
> >          DestS.patch(dest_rpath, source_diffiter)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 269, in patch
> > 
> >          ITR(diff.index, diff)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rorpiter.py",
> > 
> > line 313, in __call__
> > 
> >          last_branch.fast_process(*args)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 587, in fast_process
> > 
> >          if self.patch_to_temp(mirror_rp, diff_rorp, tf):
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 636, in patch_to_temp
> > 
> >          rpath.copy_attribs(diff_rorp, new)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rpath.py", line
> > 
> > 238, in copy_attribs
> > 
> >          rpout.write_ea(rpin.get_ea())
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rpath.py", line
> > 
> > 1664, in write_ea
> > 
> >          ea.write_to_rp(self)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/eas_acls.py",
> > 
> > line 131, in write_to_rp
> > 
> >          self.clear_rp(rp)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/eas_acls.py",
> > 
> > line 106, in clear_rp
> > 
> >          rp.conn.xattr.remove(rp.path, name, rp.issym())
> >  
> >      Traceback (most recent call last):
> >      File "/usr/bin/rdiff-backup", line 32, in <module>
> >          rdiff_backup.Main.error_check_Main(sys.argv[1:])
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 395, in error_check_Main
> > 
> >          Main(arglist)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 417, in Main
> > 
> >          take_action(rps)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 353, in take_action
> > 
> >          Backup(rps[0], rps[1])
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/Main.py", line
> > 
> > 442, in Backup
> > 
> >          backup.Mirror(rpin, rpout)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 39, in Mirror
> > 
> >          DestS.patch(dest_rpath, source_diffiter)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 269, in patch
> > 
> >          ITR(diff.index, diff)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rorpiter.py",
> > 
> > line 313, in __call__
> > 
> >          last_branch.fast_process(*args)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 587, in fast_process
> > 
> >          if self.patch_to_temp(mirror_rp, diff_rorp, tf):
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/backup.py", line
> > 
> > 636, in patch_to_temp
> > 
> >          rpath.copy_attribs(diff_rorp, new)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rpath.py", line
> > 
> > 238, in copy_attribs
> > 
> >          rpout.write_ea(rpin.get_ea())
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/rpath.py", line
> > 
> > 1664, in write_ea
> > 
> >          ea.write_to_rp(self)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/eas_acls.py",
> > 
> > line 131, in write_to_rp
> > 
> >          self.clear_rp(rp)
> >      File "/usr/lib/python3/dist-packages/rdiff_backup/eas_acls.py",
> > 
> > line 106, in clear_rp
> > 
> >          rp.conn.xattr.remove(rp.path, name, rp.issym())
> >      OSError: [Errno 22] Invalid argument
> > 
> > Using the very same share on another machine (running Gentoo and Artix)
> > letting rdiff-backup make some backup to it works without a problem, so
> > I suppose my NFS server is okay, and this is some Devuan (and also
> > Debian?) specific problem.
> > 
> > I'm a bit out of ideas now ... can anybody help me? Thanks in advance!
> > 
> > Cheers, Tobias