[wellylug] DSE ieee1394 external hard drive operation problems

[Martin Bähr]

On Fri, Dec 26, 2003 at 03:48:09PM +1300, Damon Lynch wrote:
> Does anyone have any experience with the DSE 3.5" Drive Case USB 2.0 and
> Firewire (an external hard drive case) and linux?  DSE says it works
> with Linux.  I can get Mandrake's 2.4.22 kernel to recognise and mount
> the drive, but actually transferring files can be very slow, due to the
> system appearing to periodically freeze for a time.  And it appears that
> reliability is not as strong as one would like.  

that is a linux firewire problem,
i got the same with a different firewire case,
and i heared it from others too.

at least in my case it is only freezing the programs trying to access
the disk, not the whole machine, like usb did occaionally.

> model with perhaps a similar chipset said "Has performance issues in
> copying big files if sbp2 is loaded without "sbp2_serialize_io=1".  How
> do I make this 1, instead of the default of 0?

think you need to add this line in /etc/modules.conf (note that in
debian this file is generated and may be overwritten)

options sbp2 sbp2_serialize_io=1

greetings, martin.
-- 
looking for a job doing pike programming, sTeam/caudium/pike/roxen training,
sTeam/caudium/roxen and/or unix system administration anywhere in the world.
--
pike programmer   working and travelling in europe            open-steam.org
unix system-      bahai.or.at                       iaeste.(tuwien.ac|or).at
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Martin Bähr       http://www.iaeste.or.at/~mbaehr/