Holger asked the right questions.  Yes, it's an ssh problem, as you note.  You've come across what is one of the more likely upgrade issues.

In looking at your rsync_bpc command, it doesn't look like $Conf{RsyncArgs} was updated when you installed 4.0, or you have a per-host override.

Here's what a typical rsync_bpc command should look like:

/usr/local/bin/rsync_bpc --bpc-top-dir /data/BackupPC4 --bpc-host-name HOSTNAME --bpc-share-name /LOCALPATH --bpc-bkup-num 0 --bpc-bkup-comp 3 --bpc-bkup-prevnum -1 --bpc-bkup-prevcomp -1 --bpc-bkup-inode0 1 --bpc-attrib-new --bpc-log-level 1 -e /usr/bin/ssh -l root --rsync-path=/usr/local/bin/rsync --super --recursive --numeric-ids --perms --owner --group -D --times --links --hard-links --delete --partial --log-format=log: %o %i %B %8U,%8G %9l %f%L --stats --checksum HOSTNAME:/LOCALPATH/ /

The "-e" option is built from $Conf{SshPath} and $Conf{RsyncSshArgs}.  The rest of the configurable arguments (after -e) come from $Conf{RsyncArgs}.  As Holger mentions, either the main config.pl didn't get updated for some reason (did you install by running configure.pl?) or you have per-client overrides that the upgrade doesn't automatically update for you.

The default settings in 4.0 for these config variables are:

$Conf{RsyncArgs} = [

            '--super',

            '--recursive',

            '--protect-args',

            '--numeric-ids',

            '--perms',

            '--owner',

            '--group',

            '-D',

            '--times',

            '--links',

            '--hard-links',

            '--delete',

            '--partial',

            '--log-format=log: %o %i %B %8U,%8G %9l %f%L',

            '--stats',

$Conf{RsyncSshArgs} = [

        '-e', '$sshPath -l root',

];

Craig

On Wed, Mar 15, 2017 at 8:46 AM, Holger Parplies <wbppc AT parplies DOT de> wrote:

Hi,

ads wrote on 2017-03-15 11:46:39 +0000 [[BackupPC-users] After migration to V4, rsync backups not working]:
> I have migrated from V3 to V4,

how did you do that? By running configure.pl?

> and now my rsync backups are not working. [...] The 3 'Permission denied'
> lines look as if they might be ssh permission problems.

I agree with that conclusion.

Craig recently wrote on [backuppc-devel]:
> The configure.pl script updates the relevant rsync settings in the main
> config.pl file.  In particular, it updates $Conf{RsyncArgs}
> and $Conf{RsyncRestoreArgs} with the 4.0 settings.
>
> $Conf{RsyncSshArgs} is a new 4.0 setting, and $Conf{RsyncClientCmd}
> and $Conf{RsyncClientRestoreCmd} are no longer used.  configure.pl tries to
> extract a sensible default setting for $Conf{RsyncSshArgs} from
> $Conf{RsyncClientCmd}.
>
> The potential problems are that there are per-client overrides for these
> settings (which is not checked by configure.pl), and the computed value for
> $Conf{RsyncSshArgs} isn't correct.

I'm guessing something went wrong. Either you have per-client overrides or
the value of RsyncSshArgs is computed incorrectly. What was your (V3)
RsyncClientCmd, what is your (V4) RsyncSshArgs?

Regards,
Holger

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