ethtool/nic question

Frank DiPrete fdiprete at comcast.net
Wed Oct 8 19:25:31 EDT 2008



Paul Lussier wrote:
> "Darrell Michaud" <dmichaud at amergin.org> writes:
> 
>> Sometimes (with Wake on LAN) the NICs will be fully powered as long
>> as there's electricity on the motherboard, regardless of whether the
>> system is on or not.
> 
> If you turn off WOL in the BIOS, does the NIC still stay fully
> powered?  We discovered a bug in the Linux kernel e1000 drivers that
> will hork the firmware and the only fix was to remove the power cord
> and do a cold boot of the system.  It's especially annoying when the
> chassis you need to yank power on is a single chassis with 2 seperate
> systems sharing a power supply, and you can't power off the other
> half!

Hmmmm.

I am having a problem using ifenslave on 2 e1000's. (twice) on deban 
systems using "auto" in the interface file.

The first bond comes up (eth0 + eth1) on boot but the second one (eth2 
eth3) just hangs.

I have an nfs mount in fstab on the second bond network so the box just 
hangs stubbornly on boot. Give me the finger too I think.

Another set of servers do not do this - using the exact same config and 
kernel.

The difference is .. a netgear switch.




> 
> I'm wondering if we could avoid yanking power to these systems by
> shutting off WOL ?


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