BackupPC-users

Re: [BackupPC-users] rsync xfer error

2008-04-11 20:42:27
Subject: Re: [BackupPC-users] rsync xfer error
From: Tony Schreiner <schreian AT bc DOT edu>
To: backuppc-users AT lists.sourceforge DOT net
Date: Fri, 11 Apr 2008 20:41:52 -0400
Mauro Condarelli wrote:
> Hi,
> I am trying to setup BackupPC to serve my small net.
> The server is on an ubuntu/Linux machine.
> I installed via synaptic.
>
> I did a couple of successful backups from localhost and from a remote
> WinXP machine (the latter using smb).
> I am a complete loss to backup my other Linux machine.
> I am trying to use ssh+rsync but the transfer fails with the following log:
> ----------------------------------
> Contents of file
> /media/backups/backuppc/pc/ambassador.soft-in.com/XferLOG.bad.z,
> modified 2008-04-12 01:00:06 (Extracting only Errors)
>
> full backup started for directory /srv
> Running: /usr/bin/ssh -q -x -l root ambassador.soft-in.com /usr/bin/rsync 
> --server --sender --numeric-ids --perms --owner --group -D --links 
> --hard-links --times --block-size=2048 --recursive --ignore-times . /srv/
> Xfer PIDs are now 32530
> Sending: 1c000000
> Rsync command pid is 32530
> Fetching remote protocol
> Receiving: 1d000000
> Got remote protocol 29
> Negotiated protocol version 28
> Receiving: 88edff47
> Checksum seed is 1207954824
> Got checksumSeed 0x47ffed88
> Sending: 00000000
> Receiving: 1400000719012e00100000935af547ed4100000000000000
> Got file (0 of 1): .
> Got file list: 1 entries
> Child PID is 32532
> Xfer PIDs are now 32530,32532
> Sending csums, cnt = 1, phase = 0
> Sending: ffffffff
> Sending csums, cnt = 0, phase = 1
> Receiving: 04000007ffffffff
> attribSet(dir=, file=/srv)
> [ skipped 1 lines ]
> makePath(/media/backups/backuppc/pc/ambassador.soft-in.com/new//f%2fsrv/, 
> 0777)
> attribSet(dir=, file=/srv)
> Finished deltaGet phase 0
> Child is sending done
> Got done from child
> Sending: ffffffff
> Receiving: 04000007ffffffff0c000007100000002400000000000000
> Finished deltaGet phase 1
> Got stats: 16 36 0 0 ('errorCnt' => 0,'ExistFileSize' => 0,'ExistFileCnt' => 
> 0,'TotalFileCnt' => 0,'ExistFileCompSize' => 0,'TotalFileSize' => 0)
> Sending: ffffffff
> attribWrite(dir=) -> 
> /media/backups/backuppc/pc/ambassador.soft-in.com/new//attrib
> Got exit from child
> Done: 0 files, 0 bytes
> Got fatal error during xfer (No files dumped for share /srv)
> Backup aborted (No files dumped for share /srv)
>
> ----------------------------------
> I am at a complete loss to understand what's wrong.
> I also tried to enter manually the above command ("/usr/bin/ssh -q -x -l
> root ...") and to gather info replacing the -q with a -v :)
>
> The results are below:
> ----------------------------------
> ...
> debug1: Server accepts key: pkalg ssh-rsa blen 277
> debug1: read PEM private key done: type RSA
> debug1: Authentication succeeded (publickey).
> debug1: channel 0: new [client-session]
> debug1: Entering interactive session.
> debug1: Sending environment.
> debug1: Sending env LANG = it_IT.UTF-8
> debug1: Sending command: /usr/bin/rsync --server --sender --numeric-ids
> --perms --owner --group -D --links --hard-links --times
> --block-size=2048 --recursive --ignore-times . /srv/
> ----------------------------------
> It seems everything is ok up to the point where the actual rsync command
> is issued, then everything stops (possibly waiting for something else).
>
> I should add that, due to a firewall between server and client, the
> server can see the client, but not viceversa.
> The problem is the server is on my internal local network, while the
> client is my web server on the DMZ branch of the LAN.
> This means that the server can initiate the ssh connection ok, but the
> client cannot initiate a communication to the server by it's own accord.
> I do not *think* this should be a problem, since the ssh tunnel is
> working and should be used for rsync communication.
>
> Can someone help me, please?
> I'm beginning to be a little desperate...
>
> TiA
> Mauro
>
> P.S.: I tried sending another mail, but it disappeared, so I wrote
> again, I hope You will not be flooded :)
>
> Regards
> Mauro
>
>   
There is a config variable called  BackupZeroFilesIsFatal.
If that is set to 1, and your share is empty files, the backup will fail.

Set it to 0 or skip /srv.
Tony


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