Created attachment 759753 [details]
photo of console during the long pause
Description of problem:
When doing a pxeboot install there is a delay in the early stages of the install (dracut or udev?). This occurs before the language selection and can cause a person to think the boot/install has hung.
This happens on systems with multiple NICs. I have observed this on a Dell R320 with a quad Intel card installed, and on a desktop PC with a Broadcom dual nic card installed. I suspect the delay is longer with more NICs.
Version-Release number of selected component (if applicable):
Fedora 19-TC2 x86_64
Steps to Reproduce:
1. PXE boot a system with several NICs. For this test I've used the files from "http://serverbeach1.fedoraproject.org/pub/alt/stage/19-TC2/Fedora/x86_64/os/images/pxeboot/", but earlier F19 installs had the problem.
There is a several minute delay
It would boot the same as if I'm using a CD iso
This problem does not occur if booting an iso, such as "Fedora-19-TC2-x86_64-netinst.iso".
Also, our PXE boot envirnoment is working well for other cases and has been stable for years.. so I don't think there is a pxe config problem.
I have been testing with real hardware.. have not attempted to reproduce on a VM yet.
Created attachment 759754 [details]
intel desktop with 3 nics also pausing during pxe boot
Yes, this is caused by initramfs waiting for link. If a network connection is required in initramfs, and no device specification (eg ip=em1:dhcp) was given as boot option, initramfs tries to activate all devices, therefore waiting for link of p1p1, p1p2.
Installer (before loader was replaced with dracut in F17) used to activate only first device (with link) found if not specified in boot options.
Currently, you can specify the device to be activated:
1) using device name, eg:
2) by adding "ipappend 2" to PXE configuration which will supply
BOOTIF=XX-XX-XX-XX-XX-XX-XX option (mangled MAC address of device used for booting) to initramfs
3) by using ksdevice=XX:XX:XX:XX:XX:XX (MAC address)
I see two issues here:
- change of default behaviour: activating all devices instead of one if no devcice is specified
- it would be nice to be able to specify MAC address (for matching the device) in ip= option instead of using (deprecated) ksdevice option
Harald, am I correct in comment #2 ?
Well, due to the nature of random module loading order, there is no "first" link.
The "first" link can vary from boot to boot.
(In reply to Radek Vykydal from comment #3)
> Harald, am I correct in comment #2 ?
(In reply to Harald Hoyer from comment #4)
> Well, due to the nature of random module loading order, there is no "first"
> The "first" link can vary from boot to boot.
Yes, by first I rather meant alphabetical order of device names, but a name could have been assigned to different devices across boots or installation instances, so no consistency guarantees...
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