From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Jenkins <alan-jenkins-cCz0Lq7MMjm9FHfhHBbuYA@public.gmane.org>
Subject: Re: [PATCH] dracut-gencmdline: use udevadm info to go from /dev/X
 to /sys/Y
Date: Thu, 29 Oct 2009 10:59:33 +0000
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To: initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Alan Jenkins wrote:
> Avoid some manual spelunking in sysfs.  This makes for slightly shorter
> and simpler code.
>   

Argh, please ignore this patch.

> +    path=$(udevadm info --name "$1" --query=path 2>/dev/null

> -        dev=$(for x in /sys/block/* ; do find $x/ -name dev ; done | while read device ; do \
> -              echo "$majmin" | cmp -s $device && echo $device ; done)
> -        if [ -n "$dev" ]; then
> -            dev=${dev%%/dev}
> -            dev=${dev%%/}
> -            echo "$dev"
> -            return 0
> -        fi
>   

Device-mapper was still creating some of it's own device nodes as of
April this year.  So it's not safe to rely on udev knowing about
everything in /dev.