centos 5 had modprobe.conf entries for eth0 and if present eth1. something like: alias eth0 forcedeth alias eth1 e1000e For the new centos 6 (I have the rhel 6 client installed on my laptop) the modprobe.conf file is gone. Which is fine. I understand files can be created in /etc/modprobe.d and server the same purpose. My question is I dont see (doing a grep) any eth0 alias's in the files in /etc/modprobe.d/* My reason is when I have a system with 2 ethernet cards I used to have to specify the order of loading. Like: install e1000e /sbin/modprobe forcedeth; /sbin/modprobe --ignore-install e1000e So I used to grep for eth0 and eth1 do get the module names from modprobe.conf. How do I get that information in RHEL 6 since it doesnt seem to be there. Thanks, (just trying to prepare) Jerry
Jerry Geis wrote:> centos 5 had modprobe.conf entries for eth0 and if present eth1. > something like: > alias eth0 forcedeth > alias eth1 e1000e > > For the new centos 6 (I have the rhel 6 client installed on my laptop) > the modprobe.conf file is gone. Which is fine. I understand files can be > created in /etc/modprobe.d and server the same purpose. > > My question is I dont see (doing a grep) any eth0 alias's in the files > in /etc/modprobe.d/* > > My reason is when I have a system with 2 ethernet cards I used to have > to specify the order > of loading. Like: > install e1000e /sbin/modprobe forcedeth; /sbin/modprobe --ignore-install > e1000e > > So I used to grep for eth0 and eth1 do get the module names from > modprobe.conf.You should specify the MAC address of the NIC in /etc/sysconfig/network-scripts/ifcfg-ethX like this: HWADDR=90:E6:BA:74:E5:E6 This is the proper way to do it since at least CentOS 5. Also works in case you use 2 NICs that use the same driver. HTH, Deyan -- Deyan Stoykov, dstoykov at uni-ruse.bg System administrator University of Ruse
On Thursday, November 11, 2010 11:20:47 am Jerry Geis wrote:> So I used to grep for eth0 and eth1 do get the module names from > modprobe.conf.> How do I get that information in RHEL 6 since it doesnt seem to be there.> Thanks, (just trying to prepare)I would think it would work like Fedora 12+; load a F12/13/14 up and start looking. For that matter, CentOS 5 also, as HWADDR has been supported for a long time (in the ifcfg-ethX files in /etc/sysconfig/network-scripts). Using a recursive grep for eth0 in /etc on my F14 laptop, I find: udev/rules.d/70-persistent-net.rules:SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:c5:aa:bb:cc", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" So it looks like udev is doing these assignments, and by MAC address rather than bus enumeration (a mixed blessing!). I also see: sysconfig/network-scripts/ifcfg-eth0:DEVICE="eth0" so that mechanism is still there.
On Thu, Nov 11, 2010 at 11:20 AM, Jerry Geis <geisj at pagestation.com> wrote:> centos 5 had modprobe.conf entries for eth0 and if present eth1. > something like: > alias eth0 forcedeth > alias eth1 e1000e > > For the new centos 6 (I have the rhel 6 client installed on my laptop) > the modprobe.conf file is gone. Which is fine. I understand files can be > created in /etc/modprobe.d and server the same purpose. > > My question is I dont see (doing a grep) any eth0 alias's in the files > in /etc/modprobe.d/* > > My reason is when I have a system with 2 ethernet cards I used to have > to specify the order > of loading. Like: > install e1000e /sbin/modprobe forcedeth; /sbin/modprobe --ignore-install > e1000e > > So I used to grep for eth0 and eth1 do get the module names from > modprobe.conf.Pseudo one-word answer: udev