CMD649 hardware raid support

CMD649 hardware raid support

[Sönke Ruempler]

hi ide-devels,

i have a cmd649 hardware raid controller with 2 maxtor hdd's. in the
controller bios setup i bound them to a raid-1 array.

now linux finds the card

CMD649: chipset revision 2
CMD649: not 100% native mode: will probe irqs later
CMD649: ROM enabled at 0xeff00000
    ide2: BM-DMA at 0xd600-0xd607, BIOS settings: hde:pio, hdf:pio
    ide3: BM-DMA at 0xd608-0xd60f, BIOS settings: hdg:pio, hdh:pio

hde: attached ide-disk driver.
hde: host protected area => 1
hde: 160086528 sectors (81964 MB) w/2048KiB Cache, CHS=158816/16/63
hdf: attached ide-disk driver.
hdf: host protected area => 1
hdf: 160086528 sectors (81964 MB) w/2048KiB Cache, CHS=158816/16/63

and as everybody can see linux IGNORES the raid. imho the hardware raid
array should be transparent to the os and show 1 device to it. linux seems
to simply ignore this.

here the lspci:

00:0c.0 RAID bus controller: CMD Technology Inc PCI0649 (rev 02)
        Subsystem: CMD Technology Inc: Unknown device 3649
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (500ns min, 1000ns max)
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at de00 [size=8]
        Region 1: I/O ports at dc00 [size=4]
        Region 2: I/O ports at da00 [size=8]
        Region 3: I/O ports at d800 [size=4]
        Region 4: I/O ports at d600 [size=16]
        Expansion ROM at eff00000 [disabled] [size=512K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=3 PME-


So what can i do?

--
Soenke

Re: CMD649 hardware raid support

[Bartlomiej Zolnierkiewicz]

CMD649 *doesn't* have hardware RAID.
It is software RAID and kernels 2.4.x have basic support for it.
Alternatively you can use Linux's software RAID.

--bartlomiej

On Friday 12 of September 2003 09:52, Sönke Ruempler wrote:
> hi ide-devels,
>
> i have a cmd649 hardware raid controller with 2 maxtor hdd's. in the
> controller bios setup i bound them to a raid-1 array.
>
> now linux finds the card
>
> CMD649: chipset revision 2
> CMD649: not 100% native mode: will probe irqs later
> CMD649: ROM enabled at 0xeff00000
>     ide2: BM-DMA at 0xd600-0xd607, BIOS settings: hde:pio, hdf:pio
>     ide3: BM-DMA at 0xd608-0xd60f, BIOS settings: hdg:pio, hdh:pio
>
> hde: attached ide-disk driver.
> hde: host protected area => 1
> hde: 160086528 sectors (81964 MB) w/2048KiB Cache, CHS=158816/16/63
> hdf: attached ide-disk driver.
> hdf: host protected area => 1
> hdf: 160086528 sectors (81964 MB) w/2048KiB Cache, CHS=158816/16/63
>
> and as everybody can see linux IGNORES the raid. imho the hardware raid
> array should be transparent to the os and show 1 device to it. linux seems
> to simply ignore this.
>
> here the lspci:
>
> 00:0c.0 RAID bus controller: CMD Technology Inc PCI0649 (rev 02)
>         Subsystem: CMD Technology Inc: Unknown device 3649
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR+ FastB2B-
>         Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 64 (500ns min, 1000ns max)
>         Interrupt: pin A routed to IRQ 10
>         Region 0: I/O ports at de00 [size=8]
>         Region 1: I/O ports at dc00 [size=4]
>         Region 2: I/O ports at da00 [size=8]
>         Region 3: I/O ports at d800 [size=4]
>         Region 4: I/O ports at d600 [size=16]
>         Expansion ROM at eff00000 [disabled] [size=512K]
>         Capabilities: [60] Power Management version 2
>                 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=3 PME-
>
>
> So what can i do?
>
> --
> Soenke

Re: CMD649 hardware raid support

[Sönke Ruempler]

> CMD649 *doesn't* have hardware RAID.
> It is software RAID and kernels 2.4.x have basic support for it.
> Alternatively you can use Linux's software RAID.

Ok, but why can i define a raid array in the bios setup - i think THAT IS
hardware raid?!

And what do you mean with basic support? I mean, i can do software raid with
any device, so what do you mean with 'It is software RAID and kernels 2.4.x
have basic support for it.' ?

--
Soenke

Re: CMD649 hardware raid support

[Bartlomiej Zolnierkiewicz]

On Friday 12 of September 2003 16:57, Sönke Ruempler wrote:
> > CMD649 *doesn't* have hardware RAID.
> > It is software RAID and kernels 2.4.x have basic support for it.
> > Alternatively you can use Linux's software RAID.
>
> Ok, but why can i define a raid array in the bios setup - i think THAT IS
> hardware raid?!

ROTFL ;-)
This is software RAID with RAID code in (card or motherboard) BIOS.

> And what do you mean with basic support? I mean, i can do software raid
> with any device, so what do you mean with 'It is software RAID and kernels
> 2.4.x have basic support for it.' ?

CMD649 uses propertiary on disk RAID format.  2.4.x supports it.

> --
> Soenke