Greetings - This is to follow-up the problem I wrote about last week with the subject "Connection failed, nt status bad network name". I am not receiving list emails for some reason so I can't respond with my solution and keep the message thread.
The initial symptoms of the problem I was having was showing that backuppc was showing ping failures to the network host name, and a message of NT_STATUS_BAD_NETWORK_NAME. This led me to believe that I had a bad name resolution setup on my network. That was not the case, and the message that backuppc provides stating that ping to host have failed, is clearly a lie, and as a result is very misleading when trying to diagnose the true problem. In my research I saw references to invoking backuppc from the command line to get more verbose error. So I tried that, and saw that pings were actually succeeding, even though the web interface was continuing to show the ping failure error rate climbing. bash-4.1$ /usr/share/BackupPC/bin/BackupPC_dump -f -v jab-opti755 cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 jab-opti755 cmdSystemOrEval: finished: got output PING jab-opti755.mei.lan (192.168.112.125) 56(84) bytes of data. 64 bytes from jab-opti755.mei.lan (192.168.112.125): icmp_seq=1 ttl=128 time=0.125 ms --- jab-opti755.mei.lan ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.125/0.125/0.125/0.000 ms cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 jab-opti755 cmdSystemOrEval: finished: got output PING jab-opti755.mei.lan (192.168.112.125) 56(84) bytes of data. 64 bytes from jab-opti755.mei.lan (192.168.112.125): icmp_seq=1 ttl=128 time=0.252 ms --- jab-opti755.mei.lan ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.252/0.252/0.252/0.000 ms CheckHostAlive: returning 0.252 Running: /usr/bin/smbclient \\\\jab-opti755\\f -U jeffb -E -N -d 1 -c tarmode\ full -Tc - full backup started for share f started full dump, share=f Xfer PIDs are now 12258,12257 xferPids 12258,12257 cmdExecOrEval: about to exec /usr/bin/smbclient \\\\jab-opti755\\f -U jeffb -E -N -d 1 -c tarmode\ full -Tc - Anonymous login successful Domain=[WORKGROUP] OS=[Windows Vista (TM) Ultimate 6002 Service Pack 2] Server=[Windows Vista (TM) Ultimate 6.0] tree connect failed: NT_STATUS_ACCESS_DENIED Anonymous login successful Domain=[WORKGROUP] OS=[Windows Vista (TM) Ultimate 6002 Service Pack 2] Server=[Windows Vista (TM) Ultimate 6.0] tree connect failed: NT_STATUS_ACCESS_DENIED tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0 filesTotal, 0 sizeTotal Got fatal error during xfer (No files dumped for share f) cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 jab-opti755 cmdSystemOrEval: finished: got output PING jab-opti755.mei.lan (192.168.112.125) 56(84) bytes of data. 64 bytes from jab-opti755.mei.lan (192.168.112.125): icmp_seq=1 ttl=128 time=0.268 ms --- jab-opti755.mei.lan ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.268/0.268/0.268/0.000 ms cmdSystemOrEval: about to system /bin/ping -c 1 -w 3 jab-opti755 cmdSystemOrEval: finished: got output PING jab-opti755.mei.lan (192.168.112.125) 56(84) bytes of data. 64 bytes from jab-opti755.mei.lan (192.168.112.125): icmp_seq=1 ttl=128 time=0.209 ms --- jab-opti755.mei.lan ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.209/0.209/0.209/0.000 ms CheckHostAlive: returning 0.209 Backup aborted (No files dumped for share f) Not saving this as a partial backup since it has fewer files than the prior one (got 0 and 0 files versus 0) dump failed: No files dumped for share f >From the backuppc user, I tried the following and was allowed access. Hmm, why can't backuppc get access to run the backup? bash-4.1$ smbclient -L jab-opti755 -W workgroup -U jeffb Enter jeffb's password: Domain=[JAB-OPTI755] OS=[Windows Vista (TM) Ultimate 6002 Service Pack 2] Server=[Windows Vista (TM) Ultimate 6.0] Sharename Type Comment --------- ---- ------- ADMIN$ Disk Remote Admin C$ Disk Default share D$ Disk Default share F Disk F$ Disk Default share IPC$ IPC Remote IPC Domain=[JAB-OPTI755] OS=[Windows Vista (TM) Ultimate 6002 Service Pack 2] Server=[Windows Vista (TM) Ultimate 6.0] Server Comment --------- ------- Workgroup Master --------- ------- In the end I made one change to the host configuration file, and one change to the server configuration file. The host change that I made was the dhcp flag. I unchecked the box (dhcp=0). This change eliminated the bad network name error, but did not resolve the issue. Instead it just showed a new network error NT_STATUS_ACCESS_DENIED. This indicated to me that somewhere there was a permissions problem. Searching through Google results on this showed a lot of discussion about removing the -N flag from the SmbClientFullCmd line in the main configuration file. Since many of the discussions were several years old, and primarily addressing Ubuntu and Debian distributions I was a little skeptical that it would work, since I am running CentOS6. But, I made that one change to remove the -N flag from the smbclient command, and my backup now starts, It looks like maybe the smbclient -N flag should be removed from the stock configuration file if it is affecting all the distributions. Also I would suggest to the developers to change the error output that indicates that ping is not successful, when ping is actually working, and the problem is something else. It could prevent a lot of wild goose chases. Thanks. Jeff Boyce Meridian Environmental www.meridianenv.com ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
