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Massimo Fidanza | 5 Dec 2007 02:12
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isw raid 10 support

Hi all,

I just bought 4 SATA disk and I discover that my fake raid 10 
configuration is not yet supported by dmraid. My chipset is an Intel 
ICH8R. I see on this list that someone submitted a patch for isw
raid 10 support. Did You plan to release this patch with the next dmraid 
version? When It will
be released?

Best regards
Massimo
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Marcio Carneiro | 5 Dec 2007 14:38
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Marvell and dmraid

Hi!

I have an Marvell 88SE6145 chip onboard, and with Garzik's patch (or
kernel 2.6.23) it worked with AHCI driver.

With a RAID 0 setup I tried dmraid 1.0.0.rc14 and it seems that the
raid metadata is in ddf1 format, but I got this:

# dmraid -r -f ddf1
/dev/sdc: ddf1, ".ddf1_disks", GROUP, ok, 625011376 sectors, data <at>  0
/dev/sdd: ddf1, ".ddf1_disks", GROUP, ok, 625011376 sectors, data <at>  0

# dmraid -tay -f ddf1
ERROR: ddf1: cannot find virtual drive record on /dev/sdc
ERROR: ddf1: cannot find virtual drive record on /dev/sdd

I just found this message in ddf1.c.orig, not in ddf1.c, so I'm a bit
confused where to look in the code... :/

Does anybody have a tip?

Thanks in advance!

Márcio.
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Marcio Carneiro | 6 Dec 2007 01:38
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Re: Marvell and dmraid

On Dec 5, 2007 11:38 AM, Marcio Carneiro <marcio.carneiro <at> gmail.com> wrote:
>
> # dmraid -tay -f ddf1
> ERROR: ddf1: cannot find virtual drive record on /dev/sdc
> ERROR: ddf1: cannot find virtual drive record on /dev/sdd
>
> I just found this message in ddf1.c.orig, not in ddf1.c, so I'm a bit
> confused where to look in the code... :/

My bad, this is indeed in ddf1.c.

Yet, does anybody have an idea about the error?

Thanks!

Márcio.
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Andrew Peabody | 18 Dec 2007 21:13
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Adaptec HostRAID ddf1 on Supermicro X7DBR-i+

Hi Everyone,

First I want to say that dmraid was been a wonderful tool for use.  We use
it with many Sun X2100s, and other motherboards with great success.  The
only feature we really miss is an option like mdmonitor to notify us if
there is a problem with an array.

However, I have several identical Supermicro X7DBR-i+ (BIOS 2.0)
motherboards that seem to have issues with dmraid.  I'm not sure if it's a
problem with the board, dmraid, or the combination.  The motherboard
provides with option for either an Intel or Adaptec code base.  We had
exceptional troubles (corruption, or drives just disappearing, normally
unable to complete install) withe Intel code base and decided to try the
Adaptec option instead.  It appeared to work, but on closer inspection
after install it's still not working right.  With 1.0.0.rc13 the array
appears to be recognized by dmraid, but never activated through the device
mapper, instead the operating system was mounting the underlying physical
device based on it's label.  I noticed that it was using the ddf1 "driver"
for the array and looking through the changelog and noticed that there was
a fix for some ddf1/Adaptec problems in rc14 so I upgraded to that and
rebuild initrd, etc.  However, while I appear to be able to successfully
manually start the array, it appears to not work within the sysinit/initrd
default procedure.  While "/sbin/dmraid.static -ay -i -p -t" grep, etc
does return the array name eg: ddf1_Volume0 the later command to activates
fails with a seg fault eg: /sbin/dmraid.static -ay -i -p "ddf1_Volume0". 
However without specifying an arrayname it appears to activate properly. 
It looks like the initrd was written for dmraid using the "-p" arrayname
to utilize kpartx to create the partition device maps with the "p"
deliniator.  I would guess that if one could specify the partition
deliniator then kpartx and the  might not be needed?  Any thoughts on how
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Phillip Susi | 18 Dec 2007 22:18
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Re: Adaptec HostRAID ddf1 on Supermicro X7DBR-i+

Andrew Peabody wrote:
> Hi Everyone,
> 
> First I want to say that dmraid was been a wonderful tool for use.  We use
> it with many Sun X2100s, and other motherboards with great success.  The
> only feature we really miss is an option like mdmonitor to notify us if
> there is a problem with an array.

Currently dmraid has no error handling capability, so you probably don't 
want to use it on a server needing fault tolerance.
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Andrew Peabody | 18 Dec 2007 23:25
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Re: Adaptec HostRAID ddf1 on Supermicro X7DBR-i+

Hi Phillip,

We are experimenting with it for use on compute nodes, so fault tolerance
is not a big deal, currently we don't mirror drives on most of our nodes. 
Right now smartd seems to be an acceptable way to identify underlying
drive failure for this particular application.  We could use linux
software raid, but prefer the idea of the fakeraid solution to ease kick
started PXE boot rebuilds across diverse hardware.

Thanks,

Andrew

On Tue, December 18, 2007 1:18 pm, Phillip Susi wrote:
> Andrew Peabody wrote:
>> Hi Everyone,
>>
>> First I want to say that dmraid was been a wonderful tool for use.  We
>> use
>> it with many Sun X2100s, and other motherboards with great success.  The
>> only feature we really miss is an option like mdmonitor to notify us if
>> there is a problem with an array.
>
> Currently dmraid has no error handling capability, so you probably don't
> want to use it on a server needing fault tolerance.
>
> _______________________________________________
> Ataraid-list mailing list
> Ataraid-list <at> redhat.com
> https://www.redhat.com/mailman/listinfo/ataraid-list
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Heinz Mauelshagen | 21 Dec 2007 16:40
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Re: Adaptec HostRAID ddf1 on Supermicro X7DBR-i+

On Tue, Dec 18, 2007 at 04:18:55PM -0500, Phillip Susi wrote:
> Andrew Peabody wrote:
>> Hi Everyone,
>>
>> First I want to say that dmraid was been a wonderful tool for use.  We use
>> it with many Sun X2100s, and other motherboards with great success.  The
>> only feature we really miss is an option like mdmonitor to notify us if
>> there is a problem with an array.
>
> Currently dmraid has no error handling capability, so you probably don't 
> want to use it on a server needing fault tolerance.

This is being implemeted with the kind help of Intel
and will be released ASAP next year.

Heinz

>
> _______________________________________________
> Ataraid-list mailing list
> Ataraid-list <at> redhat.com
> https://www.redhat.com/mailman/listinfo/ataraid-list

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Storage Development                               56242 Marienrachdorf
                                                  Germany
Mauelshagen <at> RedHat.com                            PHONE +49  171 7803392
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