[CentOS] Weird CentOS 5.3 problem

Randall Martin

wolf at clemson.edu
Tue May 19 13:04:43 UTC 2009


I reimaged a compute node on our cluster with the latest 5.3 updates (we
were previously running 5.2), but we kept the kernel at 2.6.18-92.1.10.el5
until I can find time to rebuild some of our kernel modules.  After the
image install finishes and the system reboots, the eth0 ethernet interface
disappears.  If I do an ifconfig ­a, I see what should be eth0, but it¹s
listed as __tmp2081258173.

[root at node0770 ~]# ifconfig -a
__tmp2081258173 Link encap:Ethernet  HWaddr 00:1E:68:86:67:04
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:66

The dmesg output isn¹t very helpful:

[root at node0770 ~]# dmesg|grep eth0
eth0: forcedeth.c: subsystem: 0108e:534b bound to 0000:00:08.0


If I remove our lustre modules that were built for the 2.6.18-92.1.10.el5
kernel and reboot, the eth0 interface reappears.  Another piece to this
puzzle is that this problem only seems to happen on our Sun X2200¹s.  Our
Dell 1950¹s work just fine after putting on the 5.3 updates.  Anyone know
what could cause this behavior?

Thanks,
Randy
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