Without trying to sound stupid( I know I am really but...) where do I
find the linux-usb-devel list archives and where can I find your
patches.
Are these patches for the 2.4 kernel or 2.6 as I am using 2.4 and
cannot migrate to 2.6 even though I want to.
:-(
Regards Ian
David Brownell wrote:
On Monday 06 December 2004 11:38 am, Ian Turley wrote:
Hi
I have an external Maxtor 250 G one touch connected through a USB 2.0
PCI Via technology card, that works fine. However everynight when the
cron job updateddb runs the hard drive crashes:
Dec 6 11:16:48 everton kernel: hub.c: USB device not accepting new
address (error=-71)
Dec 6 11:16:53 everton kernel: scsi: device set offline - not ready or
command retry failed after bus reset: host 0 channel 0 id 0 lun 0
Dec 6 11:16:53 everton kernel: SCSI disk error : host 0 channel 0 id 0
lun 0 return code = 70000
Dec 6 11:16:53 everton kernel: I/O error: dev 08:01, sector 147592648
... etc
Lately, lots of folk have been reporting problems with drives just
offlining themselves. In fact I sent some mail about that on Friday,
for that same Maxtor drive. Check the linux-usb-devel list archives
for the thread "those "disk drive disconnects self" problems ...".
Since then I've had some progress, applying two patches. One patch
for EHCI, which I'll submit later today; and another for usb-storage,
which I'll post at about the same time (but won't suggest be merged).
With both patches, I was able to "rsync" about 22 GB, without the
problems that previously appeared.
Separately, I'll remark that _some_ of the VIA EHCI cards have been
troublesome ... the ones with VT6202 chip. You can tell if that's
what you've got either by looking at the card, or (if you're not
using an open-air case!) seeing if the driver initialization
messages report "EHCI 0.95" rather than "EHCI 1.0". (You could
tell from the silicon revision -- 63 below -- but I don't remember
which code indicates VT6202!) I'd not be surprised to learn that
the EHCI patch I'll post has improved behavior on the VT6202, since
the timing issue it addresses is chip-specific and could more easily
show up on such older silicon.
While I don't think either of those patches really addresses the root
cause of whatever problem is making drives offline themselves, better
fault recovery might be enough to make them fully usable.
- Dave
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