Re: Addonics AE51DECSUF (OXFW900 based enclosure) does not work with linux 2.6.10

> Jan 11 01:04:17 kmsg_source@pawan kernel: ieee1394: sbp2: aborting sbp2 command
> Jan 11 01:04:17 kmsg_source@pawan kernel: Write (10) 00 2e 93 7c 3f 00 00 80 00

(...)

> Jan 11 01:08:47 kmsg_source@pawan kernel: - not ready after error recovery: host 1 channel 0 id 0 lun 0
> Jan 11 01:08:47 kmsg_source@pawan kernel: scsi: Device offlined - not ready after error recovery: host 1 channel 0 id 0 lun 0

(...)

> Jan 11 01:08:48 kmsg_source@pawan kernel: SCSI error : <1 0 0 0> return code = 0x50000
> Jan 11 01:08:48 kmsg_source@pawan kernel: end_request: I/O error, dev sdd, sector 781417535
> Jan 11 01:08:48 kmsg_source@pawan kernel: Buffer I/O error on device sdd1, logical block 390708736
> Jan 11 01:08:48 kmsg_source@pawan kernel: lost page write due to I/O error on sdd1
> Jan 11 01:08:48 kmsg_source@pawan kernel: scsi1 (0:0): rejecting I/O to offline device

I am curious about any resolution of this problem. I had the exact same
symptoms (with 2.6.9) trying to connect an iPod on a FW card with NEC's
uPD72874 chipset. With this card, serialize_io=1 neither made a
difference: the iPod always eventually offlined after a few minutes of
increasingly low transfer speeds.

I now use a LaCie USB2/FW combo card. With serialize_io=0, the
"ieee1394: sbp2: aborting sbp2 command" messages are still present but
the device don't get offlined. Transfer speeds are rather low and
intermittent (2.6 MB/s). With serialize_io=1, I don't get any error
messages anymore, and transfer speed doubles (5.4 MB/s). However, the
transfer speed is still lower than with the USB 2.0 connexion (6.8 MB/s,
which is what I got using FW on another PC under Windows -- I gather
this is the iPod drive's throughput limit when the file size largely
exceeds the iPod's 32 MB of RAM cache).

Thus, I'm not expert at all in these matters, but for me, a different
FireWire adapter did the trick.

François Bouffard

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Received on Wed Jan 12 06:37:22 2005