RE: [Bug 372170] Re: host protected area prevents detection of isw (intel matrix storage manager) raid arrays

[David Coggin]

Thanks for the reply, Robert.

David

-Original Message-
From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of Robert 
Collins
Sent: Saturday, May 30, 2009 10:32 PM
To: da...@thecoggins.net
Subject: [Bug 372170] Re: host protected area prevents detection of isw (intel 
matrix storage manager) raid arrays

Hi David, your drive setup isn't suffering from the HPA offset issue.
Please file a new bug so that your problem can be tracked - the HPA bug
will be closed soon and I wouldn't want to prevent your issue getting
examined.

-- 
host protected area prevents detection of isw (intel matrix storage manager) 
raid arrays
https://bugs.launchpad.net/bugs/372170
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of the bug.

Status in “dmraid” source package in Ubuntu: In Progress
Status in dmraid in Ubuntu Jaunty: New

Bug description:
For some reason, my isw based system has the raid metadata 2115 sectors back. 
I've hard coded the offset in which got me working; I'm not sure what algorithm 
should be getting used - perhaps its a misdetect between BIOS and linux, or 
some other enjoyable weirdness.

-- 
host protected area prevents detection of isw (intel matrix storage manager) 
raid arrays
https://bugs.launchpad.net/bugs/372170
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[Bug 372170] Re: host protected area prevents detection of isw (intel matrix storage manager) raid arrays

[David Coggin]

I am a newcomer to Linux.  I'm trying to get a dual-boot Windows XP x64
working with Ubuntu 9.04.  The machine has an ICH10R motherboard with a
new Windows OS load on a two-drive RAID 1 array using the Intel Matrix
Manager RAID management.  After initially loading XP, I started Ubuntu
from a Live CD and using the included dmraid had errors when trying to
set up the RAID using the instructions at:

https://help.ubuntu.com/community/FakeRaidHowto

When entering 
$ sudo dmraid -ay

I had the following errors:

Error:  isw device for volume "Volume0" broken on /dev/sda in RAID set "isw_df 
. . .
Error:  wrong # of devices in RAID set "isw_df . . ." [1/2] on /dev/sda

These errors were repeated for /dev/sdb

I did not try the "$ sudo dmraid -r -d" entry.  After searching I found
Rob's request for testing the dmraid patch for ICH10R.  I updated with
his new version of  dmraid, and tried the sudo dmraid -r -d entry.  Here
are the results:

ubu...@ubuntu:~$ sudo dmraid -r -d
DEBUG: isw metadata found at 640135027712 from probe at 640135027712

DEBUG: isw metadata found at 640135027712 from probe at 640135027712

/dev/sdb: isw, "isw_ifbbajief", GROUP, ok, 1250263726 sectors, data@ 0
/dev/sda: isw, "isw_dfdjaigcaf", GROUP, ok, 1250263726 sectors, data@ 0

However, when trying to return to my previous instructions, I got the
same errors again when executing $ sudo dmraid -ay

Hope this helps.  If I can provide any more information I will be happy
to, but I will need fairly explicit directions.

David

-- 
host protected area prevents detection of isw (intel matrix storage manager) 
raid arrays
https://bugs.launchpad.net/bugs/372170
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