Re: Udev net issues

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Phil Meyer wrote:
Joseph L. Casale wrote:
Good question, and yes, udev DOES keep track.

check in /etc/udev/rules.d for file names with *persistant* in them.
There are several, and one for -- you guessed it -- network/NIC data.

By removing the persistent file(s), udev will rebuild it with the
correct/current info.

This is how you install on one platform and put that disk into another.:
Remove the udev persistant rules in the post-install.

Phil,
This is exactly what I did, I moved the file out altogether.
Should I have simply removed the line in it? It recreated the
file next boot with the old mac address only to still cause issues!

Thanks,
jlc


Yes, do not move (mv) the file, remove (rm) it. Copy it first to some other directory if you wish, but do not leave any trace of the original file anywhere udev can find it. :)

Good Luck!


One further clarification:

To make a 'clean' system disk that can be put into another system, remove all the /etc/udev/rules.d/*persistant* and /etc/sysconfig/network-scripts/*eth? and /etc/sysconfig/network-scripts/*wlan? and /etc/X11/xorg.conf files.

I always do this in a post install, and have not tried it on a live system. It may be necessary to do this from a rescue disk. I do not know if a running udev will 'let you' remove that data.

Sorry to not be able to verify the steps on a previously running system. I just don't do those. However, every day I use a virtual machine on my desktop to install an OS on Compact Flash Cards, and thumb drives, to be used in a variety of equipment. This method works perfectly for that, with the exception that I have to also rebuild the initrd image with drivers that anaconda did not see during the install.

Here is what I use, for the curious:

My %post section includes this:

#
# fix udev rules for fake interfaces
#
rm -f /etc/udev/rules.d/70-persistent-net.rules
rm -f /etc/X11/xorg.conf
#
cat << _EOF > /etc/sysconfig/network-scripts/ifcfg-eth0
#
DEVICE=eth0
BOOTPROTO=dhcp
HWADDR=
IPV6INIT=no
ONBOOT=yes
DHCP_HOSTNAME=skid
TYPE=Ethernet
_EOF
#
# make sure usb-storage is in the initrd image
#
kernel=`ls /boot/vmli* | awk -F\- '{printf("%s-%s\n", $2,$3)}'`
initrd="/boot/initrd-${kernel}.img"
rm $initrd
mkinitrd --preload=ehci-hcd --preload=ahci --preload=libata --preload=jbd --preload=ohci-hcd --preload=uhci-hcd --preload=scsi_wait_scan --preload=usb-storage --preload=scsi_mod --preload=sd_mod --preload=pata_amd --preload=ata_generic --preload=pata_cs5536 --preload=pata_acpi $initrd $kernel
#


Good Luck

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