Here is how to stop the new udev from accessing your striped dmraid drives

[Phillip Susi]

Wouldn't it be better to fix the bug in udev to that it doesn't try to 
access blocks that are past the end of the device, even if the partition 
table seems to say they exist?

James Olson wrote:
> The new version of the udev package in Fedora Core 4 updates is udev-071-0.FC4.2, and it tries to scan drive partitions to create
> some new devices such as those in the new /dev/disk/by-id/ directory.
> With dmraid you don't want it to scan your striped raid drives individually or it will generate errors as it tries to 
> seek past the end of the drive with the "big" partition on it.  My raid
> drives are /dev/hde, /dev/hdf, and /dev/hdg but you can modify it for
> your own raid devices that you don't want udev to scan.
> 
> Here is the patch to the 50-udev.rules file in /etc/udev/rules.d/
> 
> # diff -Naur 50-udev.rules.orig 50-udev.rules
> --- 50-udev.rules.orig  2006-01-31 08:09:15.000000000 -0800
> +++ 50-udev.rules       2006-02-05 14:13:37.000000000 -0800
> @@ -255,6 +255,9 @@
>  # skip rules for inappropriate block devices
>  KERNEL=="ram*|loop*|fd*|nbd*", GOTO="persistent_end"
> 
> +# skip dmraid drives
> +KERNEL=="hde*|hdf*|hdg*", GOTO="persistent_end"
> +
>  # never access removable ide devices, the drivers are causing event loops on open()
>  BUS=="ide", DRIVER!="ide-cdrom", SYSFS{removable}="1", GOTO="persistent_end"
> 
>