isw device for volume broken after opensuse livecd boot

[Hall, Eric R]

Tiago -

The OpenSuSE 10.3 RC2 Livecd has way too many issues to even begin
trying to debug dmraid.  I was unable to get it to boot properly on any
of our ICH9 platforms.  The KIWI image loader manages to loose CD-ROM
drives that are attached to the system via SATA or USB.  It errors out
with "Failed to detect CD drive !"  Our platforms lack any PATA ports...
So I was unable to test with an old PATA cd-rom.  I'll see if I can get
the 10.3 RC2 livecd to boot from PXE, but I'm very doubtful that it will
work.

I would recommend using RC1 if you have to use OpenSuSE 10.3.

- Eric

>-----Original Message-----
>From: ataraid-list-bounces at redhat.com [mailto:ataraid-list-
>bounces at redhat.com] On Behalf Of Tiago Freitas
>Sent: Friday, September 28, 2007 4:39 PM
>To: Fang, Ying
>Cc: ATARAID (eg, Promise Fasttrak, Highpoint 370) related discussions;
>heinzm at redhat.com
>Subject: Re: isw device for volume broken after opensuse livecd boot
>
>Thanks that's what I originally thought.
>
>I have now confirmed the bug in the opensuse 10.3 RC2 livecd / dmraid
>or device-mapper / OROM.
>
>I deleted the RAID0 volume, disconnected the third drive that wasn't
>part of the raid and chose one of the hitachis for RAID1 rebuild.
>Then I created a new RAID0 volume, so the raid0 was online and raid1
>degraded.
>
>I then booted the opensuse livecd and just entered a root terminal and
>typed "dmraid -ay". It said that the RAID0 was broken.
>
>I rebooted and OROM said that the second raid member was offline, so
>RAID0 failed and RAID1 degraded.
>So just typing "dmraid -ay' makes OROM think one or more members are
>offline!! I think only one got offline because the raid1 was degraded,
>on the first time when both were online, after the "dmraid -ay" both
>became offline.
>
>Then I disconnected the sata port of one of the disks, and it said
>raid0 and raid1 failed. Finally I reconnected all disks and both were
>recognized, raid0 became online again.
>
>So after all it was not bad luck or bad connectors! This is a big bug
>in both dmraid or device-mapper, and OROM.
>
>First of all, the metadata should not indicate that a member is
>offline, that should be a temporarily disconnected member.
>
>You can easily reproduce this by taking the following steps:
>
>Get a P35 motherboard with ICH9R.
>Create a RAID0 volume with two disks (in this case two Hitachi 7K160).
>Create a RAID1 volume.
>Boot OpenSuse 10.3RC2 livecd. Open a terminal, type "su" and then
"dmraid -
>ay"
>Reboot and see that at least one of the disks is an offline member,
>and raid1 fails.
>
>
>On 9/28/07, Fang, Ying <ying.fang at intel.com> wrote:
>> Sorry, Tiago. I misread your email regarding the two volumes: RAID0
and
>> RAID0:1.
>>
>> In the following messages:
>>
>> "Port 1 .. Member disk(0,1)" means that the hard drive attached to
port
>> 0 (scsi address: 1:0:0:0) is a member of two RAID arrays (RAID0 and
>> RAID1) which are defined as RAID id 0 and 1 respetively.
>>
>> But port 0(scsi address 0:0:0:0) has a hard drive that has a RAID
>> configuration including the same names of the RAID arrays.
>>
>> Because the metadata got messed up, OROM couldn't determine that the
>> above two hard drives were belong to the same group of disks. In
order
>> to differentiate the names of the RAID volumes from two hard drives,
:1
>> was added in.
>>
>> >>> >0  RAID0:1   80Gb       Failed
>> >>> >1  RAID1:1  109.0Gb   Degraded
>> >>> >2  RAID0     80Gb        Failed
>> >>> >3  RAID1     109.0Gb   Degraded
>> >>> >
>> >>> >Port
>> >>> >0     Hitachi        149.1GB     Member Disk(0,1)
>> >>> >1     Hitachi        149.1GB     Member Disk(2,3)
>>
>> Thanks Eric for pointing out that the OROM display screen doesn't
>> include the partition information.
>>
>> I hope that will help you understand those magic numbers. If you have
>> any questions, let me know.
>>
>> Ying
>> >-----Original Message-----
>> >From: Fang, Ying
>> >Sent: Thursday, September 27, 2007 4:07 PM
>> >To: Tiago Freitas
>> >Cc: ATARAID (eg, Promise Fasttrak, Highpoint 370) related
discussions
>> >Subject: RE: isw device for volume broken after opensuse livecd boot
>> >
>> >Are you talking about RAID1 and RAID1:1? The first is the RAID
device
>> and
>> >the latter is the first partition in that RAID device. If you have
more
>> >than one partition there, you'll get RAID1:2 and so on.
>> >
>> >Ying
>>
>
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