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SubjectRe: Firewire Disks. (fwd)
On Mon, 10 Jun 2002, Ben Collins wrote:

> On Mon, Jun 10, 2002 at 02:11:21PM -0400, Richard B. Johnson wrote:
> >
> >
> > ---------- Forwarded message ----------
> > From: "Richard B. Johnson" <>
> > Subject: Firewire Disks.
> >
> > I know there is support for "firewire" in the kernel. Is there
> > support for "firewire" disks? If so, how do I enable it?
> >
> > Cheers,
> > Dick Johnson
> Compile and/or install the sbp2 module.

Okay. I did that. It doesn't work as for a 80 Gb hard disk, but
it works for a CD-R/W.

More follows..........

On Mon, 10 Jun 2002, Roberto Nibali wrote:

> Hi,
> > I know there is support for "firewire" in the kernel. Is there
> > support for "firewire" disks? If so, how do I enable it?
> Yes, there is and it is attached to the SCSI layer via the sbp2 driver.
> You need following set of modules to get it working:
> scsi_mod, sd_mod, ohci1394, raw1394, ieee1394, sbp2
> I know that you will find out which options you need to enable in the
> kernel config ;).
> You might want to check out the CVS version of the ieee1394 drivers but
> I don't think it is necessary. It works perfectly back here with a
> Maxtor 160GB. Funny enough I had 158GB with the VFAT on it and 152GB
> with ext2/ext3.
> The speed results were also quite interessing:
> VFAT writing : 12.8 Mbyte/s
> ext2/ext3 writing: 19.2 Mbyte/s
> I simply like that disk and it's a nice extension for a laptop :).
> Cheers,
> Roberto Nibali, ratz

Well. I have been experimenting and a Firewire CD-R/W is found and
accessible. However, a 80 Gb Maxtor hard disk is not. I had to
copy from an RS-232C screen because the resounding crash(es) repeat
forever until I hit the reset switch. <EOL> == "end of line with
data missing after".

ohci1394: $Revision: 1.80 $ Ben Collins <>
ohci1394_0: OHCI-1394 1.0 (PCI): IRQ=[9] MMIO=[febfd000-febfe000] Max
Packet=[ <EOL>
ieee1394: Device added: Node 0:1023, GUID 00063a0245003973
ieee1394: sbp2: Driver forced to serialize I/O (serialize_io = 1)
ieee1394: sbp2: Node 0:1023: Max speed [S400] - Max payload [1024]
scsi2 : IEEE-1394 SBP-2 protocol driver
scsi: unknown type 24
Vendor: GHIJKLMN Model: OPQRSTUVWXYZ Rev: "Unprintable junk"
Type: Unknown ANSI SCSI revision: 03
resize_dma_pool: unknown device type 24

Startup messages continue without further references to either SCSI
or IEEE1394. The crash occurs when my SCSI root-file system is first
referenced after initrd completes (pivot_root).

When this 80 Gb drive is used under W$, on the same machine, I see
no evidence of "GHIJKLMN" or "OPQRSTUVWXYZ" although the device-manager
doesn't let you read physical device info like it does with SCSI.

Number 24, shown above, is ^X, not part of the obvious
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" string that we see parts of above. So
it doesn't look like a read from the wrong offset during the device-

I'm using Linux-2.4.18. Maybe there is a more "mature" version
of sbp2 I should be using??

Dick Johnson

Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).

Windows-2000/Professional isn't.

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