OK So this is the mdadm mailing list, and the /dev/mapper is irrelevant 
here, right? So ...

How do I load my existing raid arrays with mdadm?


-----Original Message-----
From: Luca Berra <redacted>
To: linux-raid@vger.kernel.org
Cc: ataraid-list@redhat.com
Sent: Sat, Jan 16, 2010 11:08 am
Subject: Re: How to load preexisting ntfs partitions that are on an 
Intel Matrix Raid 1 or 5 ?


On Thu, Jan 14, 2010 at 03:09:22PM -0500, sylarrrrrrr@aim.com wrote:

 How to load preexisting ntfs partitions that are on an Intel Matrix 

Raid 1 > or 5 ?

either with md or dmraid + ntfs-3g

I must also know that the loading of the partitions in linux will not 
damage them.
Is the Intel Matrix Raid feature safe ?

which one?
dmraid i have no info, just tried it once,
mdadm: check the archives of this list
3.0.2 is broken
3.0.3 fixes some bugs
many more bug fixes are in git and will be in 3.1.2 i believe.

I tried with the latest Knoppix 6.2 LiveCD, but the device was not > 

seenautomatically,  in /dev/mapper I found too many entries, which made 

mesuspicious that my raids are not recognized well.

/dev/mapper is dmraid not mdadm,
besides that what do you mean with two many?
show evidence (dmsetup ls, dmraid -c, etc)
and maybe send it to ataraid-list@redhat.com, which deals with dmraid

Packages versions in my Knoppix:

ii  mdadm                                  3.0.3-2                    

      >  tool to administer Linux MD arrays (software

ii  linux-image-2.6.31.6                   2.6.31.6-10.00.Custom      

      >  Linux kernel binary image for version 2.6.31

-- Luca Berra -- bluca@comedia.it
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PS. I am not next to that machine right now, but I have 3 raid devices 
on it and in the /dev/mapper there were about 6 or 8 devices some of 
which had similar names and consecutive numbers e.g. 
xxxxxxxxxxxxx_System1 xxxxxxxxxxxxx_System2 xxxxxxxxxxxxx_System3 while 
my partition on one of the raid devices was called System and was raid 
1 of two disks.