RE: DMRAID+Intel P35 (ICH9R)

>-----Original Message-----
>From: [email protected] 
>[mailto:[email protected]] On Behalf Of Heinz Mauelshagen
>Sent: Saturday, July 14, 2007 2:13 AM
>To: Piotr Brostovski, Levigo Systems
>Cc: [email protected]; [email protected]
>Subject: Re: DMRAID+Intel P35 (ICH9R)
>
>On Fri, Jul 13, 2007 at 03:11:09PM +0200, Piotr Brostovski, 
>Levigo Systems wrote:
>> Hello,
>> 
>> I'm stuck with a problem which is related to the combination 
>of the new 
>> Intel ChipSet P35 on the Gigabyte P35C-DS3R and Linux (Ubuntu 7.04 
>> Feisty Fawn).
>> I try to find the information how DMRAID stores its 
>Raidinformation - 
>> and where.
>
>See description of dmraid(8).
>Various metadata formats are supported (dmraid -l).
>Such vendord specific metadata typically sits at the end of 
>each componet
>device in a RAID set and is vendor specific.
>If you are interested in details, look at the .h files below 
>lib/format/
>in the dmraid source tree.
>
>> The DMRAID man page sadly don't say anything about it how 
>DMRAID works 
>> and google finds a lot - but not what I'm exactly looking for ....
>> So i try it with this E-Mail ;)
>> 
>> The Problem is, with the Intel P35 system and Linux my raidarray get 
>> broken. And i don't know if DMRAID writes anything on the disks?
>
>Not yet.
>Enhancements to so in order to eg. replace a broken mirror member,
>are in the works.
>
>> All partitions are read-only mounted - or even not mounted at all - 
>> still the raid get corrupted.
>> 
>> With the nForce Chipsets for AMD CPUs dmraid always worked perfectly 
>> (except the bug with an old DMRaid Version, but after 
>compiling DMRaid 
>> 1.0-RC13 everything just run fine) but with the Intel Chipset i even 
>> can't say what exactly is the problem ...
>
>Might be a flaw in the isw metadata format handler.
>Send your metadata to me for investigation please.
>
>> 
>> It could be possible that it is a hardware fault, but I'm 
>not sure about 
>> it because with Windows everything seems to work fine.
>
>Well, sounds like a bug in the isw code...
>
>> Discussions in the Gigabyte support forum doesn't step ahead, in the 
>> Ubuntu support forum i haven't even an answer to this problem :(
>> 
>> 
>http://62.109.81.232/cgi-bin/sbb/sbb.cgi?&a=show&forum=1&show=3
>352&start=
>> http://forum.ubuntuusers.de/viewtopic.php?p=814604#814604
>> 
>> 
>> Maybe you heard about problems with DMRAID and Intel P35, 
>possible in 
>> particular on the Gigabyte P35 Mainboards?
>> 
>> 
>> Yours faithfully,
>> Piotr Brostovski
>
>-- 
>
>Regards,
>Heinz    -- The LVM Guy --
>
>*** Software bugs are stupid.
>    Nevertheless it needs not so stupid people to solve them ***
>
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>-=-=-=-=-=-=-=-
>
>Heinz Mauelshagen                                 Red Hat GmbH
>Consulting Development Engineer                   Am Sonnenhang 11
>Storage Development                               56242 Marienrachdorf
>                                                  Germany
>[email protected]                            PHONE +49  
>171 7803392
>                                                  FAX   +49 2626 924446
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What is the actual bug being seen?  I am having trouble understanding
the forum messages.  Also, the second link points to a discussion about
firefox, not RAID.  Is this issue beeing seen in windows and Linux?
This motherboard has two SATA controllers on it, one Marvell and one
ICH9; are you sure that this is confusing things?

Thanks,

Jason