Holger Parplies wrote at about 16:25:53 +0200 on Monday, June 30, 2014:
> Hi,
>
> Paolo Basenghi wrote on 2014-06-29 12:12:31 +0200 [Re: [BackupPC-users] BUG
> (IMHO): BackupPC_Dump on QNAP QTS 4.1]:
> > Il 29/06/2014 03.02, Les Mikesell ha scritto:
> > >Smbclient will default to reading smb.conf from the standard location,
> > >but you could override that by adding '-s /path/to/your/smb.conf' to
> > >the SmbClient related commands.
> > This can be a good idea. Thank you.
>
> note that, depending on your configuration, BackupPC might try to do an
> nmblookup - even for rsync backups.
>
> > >I'm missing something here. [...]
> >
> > As you can view in the log I attached in my original post, BackupPC_Dump
> > produces the warning at every step.
>
> Yes, that is strange. If it were only the 'ssh' commands, I'd say something
> in
> some rc script (.profile, .bashrc, .bash_profile ...) on the target host
> produces that output. If the commands were executed by a shell, I'd say the
> local shell configuration is at fault. But they aren't. Unless some strange
> QNAP kernel or Perl modification redirects exec() through a shell ... or
> /opt/bin/sudo and /opt/bin/ssh are shell scripts ...
> Hmm. '/opt/bin/sudo -u admin /bin/ping -c 1 -w 3 afrodite' probably *does*
> involve a shell (invoked by sudo).
>
> Two things you could try:
> 1. Change the PingCmd to /bin/true
> 2. Change the PingCmd: $Conf {PingCmd} = '&{sub {0}}';
>
> The first still does an exec(), but of a single very simple command with
> full path, without parameters and anything that could resemble shell
> metacharacters. In particular, /bin/true is unlikely to be patched in a
> strange way ;-).
>
> The second does not do an exec() at all.
>
> Do either get rid of the output in the PingCmd case?
>
> Do you have shell access to the device? Can you run something like
>
> % ssh -q -x -l root afrodite /bin/true
>
> or the quoted 'sudo ping' command (as the backuppc user)? Do you get *any*
> output?
I have a QNAP TS219PII, though I don't use it for backuppc.
I don't get any extraneous messages when I ssh a command into it:
i.e.
% ssh myqnap /bin/true
%
% ssh myqnap ping -c 1 -w 3 yahoo.com
PING yahoo.com (98.139.183.24): 56 data bytes
64 bytes from 98.139.183.24: icmp_seq=0 ttl=250 time=20.7 ms
--- yahoo.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 20.7/20.7/20.7 ms
%
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