RAID 1+0 on Promise Fastrak S150 TX4

[Heinz Mauelshagen]

On Mon, Jun 20, 2005 at 12:50:54PM +0300, Teemu Ikonen wrote:
> Hi all,
> 
> I'm trying to migrate a RAID 1+0 array on a Promise S150 TX4 card with
> 2.4.x kernel and the ft3xx.o module to a 2.6 kernel based system.
> 
> Unfortunately, it seems that dmraid supports only either RAID 1 or
> RAID 0, but not the combination (RAID 10) on this card.
> 
> The ft3xx module gives the following information on the array:
> 
> # cat /proc/scsi/ft3xx/0
> PROMISE FastTrak TX4000/376/378/S150 TX Series Linux Driver Version 1.00.0.18
> Adapter1  - FastTrak S150 TX4
> Array     - Array[1] : 2X2 Mirror/Stripe (OK-Gigabyte Boundary)
> Drive     -
>   1 : Maxtor 6Y200M0        IDE1/Master 203928MB IRQ(17) UDMA6 Array[1]
>   3 : Maxtor 6Y200M0        IDE2/Master 203928MB IRQ(17) UDMA6 Array[1]
>   5 : Maxtor 6Y200M0        IDE3/Master 203928MB IRQ(17) UDMA6 Array[1]
>   7 : Maxtor 6Y200M0        IDE4/Master 203928MB IRQ(17) UDMA6 Array[1]
> 
> Dmraid tells the following:
> 
> # dmraid -tay
> pdc_cebbhcjedc: 0 792968704 mirror core 2 512 nosync 4 /dev/sdc 0 /dev/sdd 0
> /dev/sde 0 /dev/sdf 0
> ERROR: dos: reading /dev/mapper/pdc_cebbhcjedc[No such file or directory]
> 
> Contratry to above the device file /dev/mapper/pdc_cebbhcjedc exists,
> but mounting it fails.
> 
> Is there anything I could do to help get the RAID 10 support on TX4 to
> work with  dmraid?

Yes, send me the files 'dmraid -rD' writes (*.dat, *.size and *.offset)
in a bzip2'ed tarball named pdc-Teemu_Ikonen.tar.bz2 and I'll see what
I can do ;)
Please use an actual version to produce those.

Cheers,
Heinz

> 
> All the best,
> 
> Teemu
> 
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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Cluster and Storage Development                   56242 Marienrachdorf
                                                  Germany
Mauelshagen at RedHat.com                            +49 2626 141200
                                                       FAX 924446
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