Re: [Evms-devel] Raid5 boot using EVMS 2.3.2 + 2.6.5

[Kevin C. <kev...@us...>]

On Wednesday 28 April 2004 3:12 am, Brendon Baumgartner wrote:
> Nice to be back :)
>
> I've been using evms 2.2.0 and kernel 2.4.24 happily for a long time now,
> and I'm trying to upgrade to 2.6.5. I think everything is in order to boot
> using an initrd from from evms 2.3.2 and 2.6.5. I'm getting an error that I
> haven't been able to reference. I did re-read the docs and double check my
> 2.6.5 kernel config, but it's possible I missed something being this is
> actually my first custom 2.6.5 kernel.
>
> I am able to boot 2.4.24 + evms 2.3.2, but not 2.6.5 + evms 2.3.2.
> Please let me know what you think.
>
> Console: (typed up, hopefully no typos)
>
> VFS: Mounted root (ext2 filesystem).
> /linuxrc: Mounting /proc
> /linuxrc: Mounting /sys
> /linuxrc: Running evms_activate
> Error retured from evms_get_object_handle_for_name(): No such file or
> directory
> /linuxrc: Setting root device to: /dev/evms/root:
> /linuxrc: Unmounting /sys
> /linuxrc: Unmounting /proc
> VFS: Cannot open root device "evms/root" or unknown-block(0,0)

Hi Brendon,

This error has been reported before, but I don't think we were able to 
conclusively determine the problem.  And of course it's really hard to debug 
this, because the system never comes up and you can never get a log file from 
the engine. :(

The symptom above is that the evms_activate script is asking the engine for 
information about a specified volume, but the engine can't find that volume 
in its list. Thus, the linuxrc script can't get the device-number for that 
volume to set the root-device.

Here's some things to check. Did you enable all the kernel options that you 
need in order to activate your volumes? All the MD and DM options? The 
linuxrc script obviously figures out the correct root-volume name, since it 
prints it right after the error, so it shouldn't be an error with the script. 
Are you using devfs? (I'm assuming not, since the linuxrc script didn't 
report starting the devfs daemon.)

I'll probably need to put together another initrd with extra debugging info 
for you to try. I'll let you know when I have something ready to try.

-- 
Kevin Corry
kev...@us...
http://evms.sourceforge.net/