Date: JAN 2010
Product & Version: netvault 8.5
OS Version: Mac OS X 10.6
Symptoms:
Backups fail with following error in binary log:
Job Message 2009/12/18 12:56:16 180 Media backup (backup: QUANTUM DXi7500) Media in 'DRIVE 4:backup' assigned to job ready for data transfer
Information 2009/12/18 12:56:16 180 Media backup Using network socket for data transfer
Error 2009/12/18 12:56:16 180 Data Plugin arena Unable to get contact address for 'backup'
Severe Error 2009/12/18 12:56:16 180 Data Plugin arena Failed to initialize backup stream
Corresponding error in filesystem trace:
4 FILESYS :13158 32 0 125616 TRUE = FileSysOpen(0xbfffe82c, /usr/netvault/etc/machines.dat, 101)
4 OBJECT :13158 66 0 125616 Add a new template NET_ADDRESS magic 0xcaf097a5 'n32;'
4 NET :13158 60 0 125616 NetGetHostAddress(0x317808, backup.tros.nl)
4 NET :13158 60 0 125616 NetGetHostAddress(0x317808, backup.tros.nl)
4 NET :13158 60 0 125616 NetGetHostAddress(0x317808, backup.tros.nl)
0 DATA :13158 182 0 125616 Failed to get contact address for 'backup'
Looks like we can not resolve netvault server (backup.tros.nl)
Found various articles talking about DNS issues after upgrading to Mac OS X 10.6
Cause:
Netvault client try's to resolve network name of backup server i.e. "backup.tros.nl" but is unable.
This is a communications problem which can be due to a firewall blocking communication one way, or packets of a particular type(i.e. UDP). It can also be DNS related.
Apply one change at a time as any of the three suggestions may resolve this problem
1/ Check all DNS servers have the correct entries for netvault client and server and modify were necessary.
2/ Modify local host files on netvault server and client with each other address
3/ Go to netvault configurator, network tab, select connections and modify "comma separated list of networks and addresses not to resolve on both client and server. with the network ipaddress of the network the problem client is using.
Example:
Client backup.tros.nl has a network address of 10.144.90.25 for this network we enter 10.144.0.0 in the allocated box on this tab.
Explanation:
Prepared by: Richard Downes
