Re: HP storageworks DAT72 USB external tape drive on centos 4.2
- From: Dances With Crows <danSPANceswitTRAPhcrows@xxxxxxxxx>
- Date: Sun, 29 Jan 2006 09:11:21 -0600
On Fri, 27 Jan 2006 16:12:49 +0100, Kim Gabrielsen staggered into the
Black Sun and said:
> i've bought a HP storageworks DAT72 USB external tape drive and i'm
> trying to make it work under centos 4.2. kernel 2.4.9-22.0.2.EL
Whoa. Did you make a typo? 2.4.9 is too ancient to be used with modern
hardware, so it's not surprising that the device doesn't work. 2.4.19
is fairly behind the times as well. The latest in the 2.4 series is
2.4.32, so you may want to upgrade that kernel.
There are comments in the 2.6.12 source that as of 2.6.10, they switched
the device initialization scheme from the old method to a new, more
Windows-like method, and that should help more devices work properly.
(There are module parameters "old_scheme_first" and "try_both_schemes"
you can feed to the hub module to control this.)
> I'd expected that a device called st0 would appear but it's not the
> case.
Devices are only dynamically created if your distro is using devfs or
udev.
> usb 1-8: new high speed USB device using address 6
> usb 1-8: control timeout on ep0in
> usb 1-8: device not accepting address 6, error -71
[repeat a bunch of times]
> but I don't know what it means. The documentation on the drives says
> the the two drivers usb_storage and st should be loaded and the drive
> should work out of the box.
Did the docs there say anything about a minimum kernel version? The
error that you're getting is probably happening in usb/core/hub.c ,
where the code attempts to assign a new address to a device and receives
an error of type -EPROTO (protocol error). That makes me think you need
a newer kernel. Try that first and see what you get.
--
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin / mail: TRAP + SPAN don't belong
http://www.brainbench.com / "He is a rhythmic movement of the
-----------------------------/ penguins, is Tux." --MegaHAL
.
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