Am 05.03.2010 23:45, schrieb Ihad: >> Some rules with respect to IDE devices were in fact removed in a >> previous udev version. In fact, almost nobody still uses the IDE >> subsystem, most(!) drivers work better with the ATA subsystem these days. >> >> However, these "standard" nodes should still be created, there should be >> no special udev rules required for them. I am a bit unsure how to debug >> this. Are the device nodes created when root is mounted and Arch is >> booted? Are they created when you boot with the break=y option and wait >> for a while? > > I didn't try break=y, but they definitely aren't created by udev, no matter > what I do. I have a custom kernel (2.6.30) with the ide drivers compiled in, > and even then I don't get the device nodes. I have to create them manually and > then mount the needed devices to get a working system. > > The custom kernel has RAID autodetect compiled in, so I get my root fs, and I > also have md0 and md1 but nothing more. No hd[a-f][0-2]. On top of the RAID is > LVM, so after: > # lvm >> vgmknodes >> quit > Then I can mount /var to recreate the initrd and reinstall the kernel and > regenerate the initrd. I'm confused, really, I see no reason why the devices shouldn't be there. Maybe after some sleep. > What does break=y do, btw? I'm too lazy too look it up myself :) It interrupts the initramfs before root is mounted and drops you into a shell. A good way to poke around if you want to. >> I am wondering if we can somehow monitor the uevents at this early stage >> of the boot process to see what goes wrong. > > Hmm, I don't really have an idea about that, except looking at the source... There is udevadm monitor - we could start that very early and redirect the output into a file inside rootfs. Then, we kill it and look at the file. Not sure if that will work well, haven't tried it.
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