[ale] recovering a software raid setup

[brian at polibyte.com (Brian Pitts)]

On 11/03/2010 03:25 PM, Greg Freemyer wrote:
> All,
> 
> I have a fedora box that quit booting in the middle of an upgrade.
> 
> fdisk -l shows the partition tables are still in tact, so I assume the
> data is as well.
> 
> I'd like to mount a data filesystem and back it up prior to
> proceeding, or even re-installing from scratch.
> 
> It's not a box I setup, but per my understanding:
> 
> Sda5 and sdb5 are MD5
> Sdc3 and sdd3 are MD6
> 
> Md5 and md6 are stripped to md10 /opt/ie
>
> I tried "dmraid -ay" from a rescue DVD and it says there are no raid
> arrays which is strange.
> 

It's my understanding that dmraid is for managing ataraid (aka fakeraid)
and mdadm is for managing linux software raid. Do you know which the box
is using? You could run 'mdadm -E' on a partition to see if it is using
linux software raid

> Can anyone help me out?  Or point me at a good rescue website?

I'm not sure what rescue DVD you're already using. The first thing I
might do is boot up SystemRescueCd [0] and see if it assembles the RAID
automatically. If not, it gives you a nice environment for poking around.

[0] http://sysresccd.org/Main_Page

-- 
All the best,
Brian Pitts