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Re: firewire damaged disk



salut jean-christophe...

* Jean-Christophe Michel <jc.michel@symetrie.com> [2004-01-02 09:07 +0100]:
> 
> I'm trying to make a lowlevel copy of a damaged ide 2.5" hd (using dd).
> I placed it in an external firewire box, and when plugged in to my
> debian unstable 2.4.23-ben1 pismo, i get in syslog:
> 
> 18:42:55 kernel: ieee1394: Stopping reset loop for IRM sanity
> 18:42:55 kernel: scsi1 : SCSI emulation for IEEE-1394 SBP-2 Devices
> 18:42:55 kernel: blk: queue ef7b2814, I/O limit 4095Mb (mask 0xffffffff)
> 18:42:56 kernel: ieee1394: sbp2: Logged into SBP-2 device
> 18:42:56 kernel: ieee1394: sbp2: Node 0-00:1023: Max speed [S400] - Max
> payload [2048]
> 18:42:56 kernel: ieee1394: Node added: ID:BUS[0-00:1023] 
> GUID[0030e001e0000b80]
> 18:42:56 ieee1394.agent[4605]: kernel driver sbp2 already loaded
> 
> And nothing more.
> If i try  dumpe2fs /dev/sda :
> 
> dumpe2fs 1.35-WIP (21-Aug-2003)
> dumpe2fs: Aucun périphérique ou adresse while trying to open /dev/sda
> 
> sr0 or sda0 to 15 don't give a better result.
> I think the disk isn't loaded at all.
> 
> Is there a lower level to address a disk via firewire ?

as far as i recall, you have to connect sbp2 to the scsi-layer somehow
by yourself in 2.4. there is a script which can do that for you here:
http://www.garloff.de/kurt/linux/rescan-scsi-bus.sh

otherwise make sure to read http://linux1394.org/faq.html .

hth,
 sebastian
-- 
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