Re: [Networker] double FULL savesets from vmware client

To stop firewall timesouts from dropping your control connections which
are idle during most of a save, set the server tcp keepalive interval to
be less than the firewall timeout... 

Typical firewall timeout rules are 60 minutes...


On a solaris server the command to set the keepalive interval to 30
minutes is:

ndd -set /dev/tcp tcp_keepalive_interval 1800000

(you can type it anytime but it doesn't persist across reboots, so it
needs to be scripted at system startup)

On windows there is a way to do it, but I don't know what that is.


> -----Original Message-----
> From: EMC NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Browning, David
> Sent: Thursday, 24 January 2008 3:42 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: Re: [Networker] double FULL savesets from vmware client
> 
> We have this happen all the time with our backups through the 
> firewall,
> mostly on FULL backup save sets.  Incremental backups seem to work ok.
> I've tried playing with the timeout factor, but that hasn't helped.
> It's basically 2 full saves, and we would love to get rid of the 1
> extra, so if you know of any fixes, please pass them along.   We have
> just learned to live with it, since it's only a couple of 
> small servers.
> 
> 
> David M. Browning Jr.
> IT Project Coordinator Enterprise Backups and Help Desk
> 
> 
> -----Original Message-----
> From: EMC NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
> Behalf Of Greggs, Dana
> Sent: Wednesday, January 23, 2008 10:33 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: Re: [Networker] double FULL savesets from vmware client
> 
> Hans,
> 
> I have seen this when at the end of the backup the client fails to
> indicate to Networker that it is finished. So if you have a 
> retry count
> set to 2 than you get two sets. In some cases it was 
> permission related,
> in other cases it was Network/Firewall related. The Firewall 
> closed the
> control ports over which flows backup status information. Networker
> establishes these connections when the backup starts and 
> keeps them open
> for the duration of the backup. If the connections are 
> dropped than the
> end result is a resending of the same data. You may see messages
> indicating that the backup failed but if you fire up the 
> client you are
> able to browse the backed up data. You can also see the data on the
> volume used for backup.
> 
> What flags do you see on the savesets? "ca" maybe?
> 
> Thanks,
> 
> Dana
> 
> -----Original Message-----
> From: EMC NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
> Behalf Of Hans Ericson
> Sent: Wednesday, January 23, 2008 2:46 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: double FULL savesets from vmware client
> 
> Hi,
> 
> 
> 
> Having trouble with 3 vmware clients. Looks like i get double savesets
> when
> the full backup runs. We are running Networker 7.1.4 on both 
> VM-clients
> (3)
> and Backupserver. OS are win 2003.
> 
> 
> 
> Any suggestions?
> 
> 
> 
> Hans
> 
> 
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