[CentOS] Pause after network initialization

Thu Apr 13 19:19:34 UTC 2006
Joshua Baker-LePain <jlb17 at duke.edu>

On Thu, 13 Apr 2006 at 1:15pm, Alan Sparks wrote

> Paul Heinlein said:
>> On Thu, 13 Apr 2006, Joshua Baker-LePain wrote:
>>> Is there a "proper" way to put in a pause after network
>>> initialization to make sure the network *really* is up?  I've had
>>> this issue for a while with e1000 cards (even on 100MB networks),
>>> where the first NFS mount will fail b/c the network reports up but
>>> isn't, really.  Now, I'm also seeing the same issue on cluster nodes
>>> hooked to a switch with jumbo frames enabled.
>> If NFS is the only issue, have you considered using the 'bg' mount
>> option? The nfs(5) man page discusses it:
> Good idea if you can survive with the temporary unavailability of the mount.

I can, especially since the mounts are still up before the system is done 

> Just a thought as well... you running a Cisco switch?  Some switches
> including Cisco are kinda slow to pass traffic after the link initializes
> (spanning tree recalculation).  You might consider, if appropriate,
> enabling fast port switching on that switch port.

It's a SMC, but I'll have a look at the settings.  Thanks.

Joshua Baker-LePain
Department of Biomedical Engineering
Duke University