Re: How to load preexisting ntfs partitions that are on an Intel Matrix Raid 1 or 5 ?

[sylarrrrrrr@aim.com]

Thanks, I will try it.

it being "issuing "dmraid -an" should suffice then just run "mdadm 
-As"."

However before I will, I would like to know if this is safe?
Is there a chance that I will lose all my data simply from this and 
mounting, I ask since it is a new feature.


-----Original Message-----
From: Luca Berra <bluca@comedia.it>
To: linux-raid@vger.kernel.org
Sent: Mon, Jan 18, 2010 9:53 am
Subject: Re: How to load preexisting ntfs partitions that are on an 
Intel Matrix Raid 1 or 5 ?


On Sat, Jan 16, 2010 at 08:57:03AM -0500, sylarrrrrrr@aim.com wrote: 
> 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? 
 
first make sure they have not been claimed by dmraid. 
issuing "dmraid -an" should suffice 
then just run "mdadm -As". 
looking at /proc/mdstat you should see a container device (or array 
using windows driver terminology) and the actual 
raid volume. 
under /dev/md you should also find meaningful device names and device 
file for the partitions contained in the volume. 
 
<snip> 
 
> 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. 
 
please quote either above or below, it is a pain to read if you quote 
in 
the middle. 
That said, you use the term 'device' above with two differemt meanings, 
and i am not quite sure of what you intend. 
please elaborate on "I have 3 raid devices" 
- 3 hard disks in the container (array) 
- a container with three volumes 
 
then you probably mix partition and volume 
xxxxxxxxxxxxx_System1 is the first partition on volume System of Array 
xxxxxxxxxxxxx (unfortunately arrays dont have meaningful names) 
xxxxxxxxxxxxx_System2 is the second partition .... 
and so on 
 
-- Luca Berra -- bluca@comedia.it 
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