Re: [Duplicity-talk] SCP Issue With duplicity 0.7.01 and rsync.net

[Kenneth Loafman]

Hi,

Yes, I can verify that a change was made that fixed an inconsistency in the way scp was handled.  Prior to 0.7.01, scp was treated basically the same as sftp unless you specified the --use-scp flag.  When we did the backend unification, scp became straight scp, sftp became straight sftp, and the --use-scp flag went away.  What this means is that we are now trying to use an interactive shell for scp and it's not working for rsync.net, they are using a different shell, and we'll need to tailor for that.  Changing over to sftp is not really changing what you were doing, you are just telling us to do what we were already doing.

...Ken

On Sun, Mar 8, 2015 at 9:29 PM, Simon Watson <address@hidden> wrote:

Hi,

Just letting you know I came across an issue with using duplicity 0.7.01 and my rsync.net account.

When I used duplicity 0.7.01 with the scp protocol to connect to my rsync.net account it would fail with:
BackendException: scp mkdir failed(2): test: target/remote/directory: unexpected operator

Thanks to Kenneth Loafman's assistance I was able to resolve this issue.

If I changed to using the sftp protocol instead it would work fine. Also if I downgraded to duplicity 0.7.0 or lower it would also work fine. So it seems like a remote command that duplicity 0.7.01 uses with the scp method won't work on rsync.net accounts.

Is anyone else able to replicate or confirm this issue?

Here is the full traceback for the exception I was getting:

Backend error detail: Traceback (most recent call last):

  File "/usr/bin/duplicity", line 1497, in <module>

    with_tempdir(main)

  File "/usr/bin/duplicity", line 1491, in with_tempdir

    fn()

  File "/usr/bin/duplicity", line 1324, in main

    action = "">

  File "/usr/lib/python2.7/dist-packages/duplicity/commandline.py", line 1048, in ProcessCommandLine

    globals.backend = backend.get_backend(args[0])

  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 221, in get_backend

    obj = get_backend_object(url_string)

  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 207, in get_backend_object

    return factory(pu)

  File "/usr/lib/python2.7/dist-packages/duplicity/backends/ssh_paramiko_backend.py", line 230, in __init__

    self.runremote("test -d '%s' || mkdir -p '%s'" % (self.remote_dir, self.remote_dir), False, "scp mkdir ")

  File "/usr/lib/python2.7/dist-packages/duplicity/backends/ssh_paramiko_backend.py", line 359, in runremote

    raise BackendException("%sfailed(%d): %s" % (errorprefix, res, chan.recv_stderr(4096)))

BackendException: scp mkdir failed(2): test: duplicity/pavlics: unexpected operator

Cheers,

Simon

--
Moon Buggy Media
moonbuggymedia.com
m. 0410 190 553

p. 03 9913 1715

_______________________________________________
Duplicity-talk mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/duplicity-talk