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List:       evms-devel
Subject:    Re: [Evms-devel] Booting from EVMS device (generic_make_request: Trying to access nonexistant block-
From:       Kevin Corry <corryk () us ! ibm ! com>
Date:       2002-10-21 12:22:34
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On Saturday 19 October 2002 23:37, Christian Kalkhoff wrote:
> Hi list,
>
> i just installed a self built redhat stylish linux system with evms.
> Everything worked fine for me. But when i go to boot the fresh system
> the kernel comes up, loads the initrd (containing all evms modules) and
> then panics with
>
> Creating root device
> Mounting root filesystem
> evms: Exporting EVMS Volume(117,255) from "/dev/evms/System"
> evms: Exporting EVMS Volume(117,254) from "/dev/evms/Swap"
> evms: Exporting EVMS Volume(117,1) from "/dev/evms/sda1"
> generic_make_request: Trying to access nonexistent block-device 75:00

This indicates that it is trying to mount major 75, minor 0. Major 75 is 
EVMS, but minor 0 is invalid. EVMS uses minor 0 to send many of the ioctl 
commands from the engine to the kernel. It is never assigned to a volume.

From your boot messages, you have three volumes, and based on our discussion 
the other day, I'm assuming System is your root fs, which is minor 255. This 
is what needs to be mounted by your initrd. Unfortunately, I don't really use 
initrd much. But, if you could send me your /linuxrc script from the initrd, 
I might be able to figure out what's going wrong.

-- 
Kevin Corry
corryk@us.ibm.com
http://evms.sourceforge.net/


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