little udev problem - loop devices instead of hda devices!

[fbarton@fish.co.uk]

I'm not posting this from the affected machine, so apologies if any vital 
information is missing.

I am running Fedora Core 1 and I recently compiled kernel 2.6.2 as an upgrade. 
I was intrigued to see that devfs, which I had previously found useful, was 
labelled OBSOLETE and so I decided to see what udev was all about.

Reading Greg's FAQ etc I can see that udev is going to be great. I installed 
udev 0.16 last night and had a play with the config/rules/permissions files. 
When eventually I felt ready to reboot I took a deep breath and did it.

Overall, it seemed to handle most of my devices just fine, and I got a really 
slimline /udev directory with all my devices just sitting there and no crud.

Except... no hard drive. The computer didn't actually boot because it couldn't 
find a console. Using my rescue disk I went in and mknodded a /dev/console 
file. The next time it booted a bit further until it said "Error: canot 
find /dev/hda1 - no such file or device" (I paraphrase).

I have seven partitions on my single hard drive: hda1 - hda7. None of these 
were there in /dev or /udev. I hadn't changed anything to do with ide or hda in 
the config files, AFAIK.

What I had instead was /udev/loop0 ... /udev/loop7 - very suspicious! For some 
reason instead of loading hda devices it was loading loop devices - seven of 
them (this is no coincidence I'm sure!). (The loop nodes were char-major 7 as 
you would expect). And in /dev I had all the redundant hda files from hda8 
upwards.

Can anyone help with these questions please:

What should I do to make sure my hda partitions are found at boot time? Why are 
the loop devices being created instead? Is it safe yet to empty /dev and just 
rely on /udev when things are properly configured (and presumably udev then 
somehow symlinks from /dev or intercepts calls to /dev/* and uses /udev/* 
instead)? Should I just go in and mknod my hda* devices again or would that not 
be a good idea? Anyone have an idea what I might have set up wrong; or does 
this look as if a piece of software is missing???

Sorry I can't post my /etc/udev/* files very easily, but I can get at them if 
needed.

Many thanks,

Francis Barton


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