Re: [Xen-users] Kernel 2.6.32.41 raid bug on squeeze

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Ian Tobin wrote:

> I'm having issues on intel and amd, when booting it doesn't assemble 
> the raid devices.  It seems to work ok in Lenny but when you upgrade 
> to squeeze it won't boot.
> Anyone else with same issue?
I've recently just been getting into this mdraid stuff as I 
rebuild/upgrade some hosts. During my experimentation, I did find 
that you need the arrays to be defined in /etc/mdadm/mdadm.conf for 
them to automatically build - and of course you need to update your 
initrd after making any changes.
ARRAY /dev/md/main metadata=1.2 UUID<your array UID> name=<your array name>

I believe /usr/share/mdadm/mkconf shoudl make this automatically for you.

I spent a bit of time at a busybox prompt figuring this out ! But 
don't take my word, I'm only a novice at this. In my case I didn't 
upgrade from Lenny, I just wiped the storage (it was previously 
hardware raid, and I upgraded disks) and did a fresh install of 
Squeeze.
I had this problem because I manually created the arrays before 
starting the installer, because the installer doesn't seem to give 
you the opportunity to name the arrays etc. So of course, because the 
installer didn't build the arrays, I think it just missed the step of 
creating the correct config file.
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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