Kexec Reboot Network Issue

Richard Genthner rgenthner at
Thu Jul 15 11:35:43 EDT 2010

I would try a different kenerl but our cluster fs has us locked to this 
kernel until we finish the upgrade to the new cluster fs version. heres 
ethtool on the iface

from lshw
                 description: Ethernet interface
                 product: NetXtreme BCM5721 Gigabit Ethernet PCI Express
                 vendor: Broadcom Corporation
                 physical id: 0
                 bus info: pci at 0000:03:00.0
                 logical name: eth0
                 version: 21
                 serial: 00:25:64:3b:9c:ae
                 size: 1GB/s
                 capacity: 1GB/s
                 width: 64 bits
                 clock: 33MHz
                 capabilities: pm vpd msi pciexpress bus_master cap_list 
ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd 
                 configuration: autonegotiation=on broadcast=yes 
driver=tg3 driverversion=3.93 duplex=full firmware=5721-v3.65, ASFIPMI 
v6.25 ip= latency=0 link=yes module=tg3 multicast=yes 
port=twisted pair speed=1GB/s

On 07/15/2010 10:20 AM, Simon Horman wrote:
> On Thu, Jul 15, 2010 at 07:59:07AM -0400, Richard Genthner wrote:
>> I'm currently using the following string:
>> kexex --type=elf-x86_64 --args-linux -l /boot/vmlinuz-2.6.18-12.el5
>> --initrid=/boot/initrd-2.6.18-128.el6.img --append="`cat
>> /proc/cmdline`"
>> kexec -e
>> Some times we can get to the box from any subnet, other times we can
>> only get to the box from the same subnet only. Our solution to this
>> is to down the iface and then restart networking. Has anyone else
>> run into this issue?
> Hi Richard,
> could you be more specific about which NIC you are using?
> And is it at all possible to test a newer kernel version?
> What I suspect is happening is that the NIC is getting into an unknown
> state. And what I'm hoping is that is a problem thats already been
> addressed.
> _______________________________________________
> kexec mailing list
> kexec at

Richard Genthner
Systems Administration
ph. 703-351-0200 x8051

More information about the kexec mailing list