Re: USB Harddrive not recognized (umass appears, da0 not)

2009/8/29 Tobias Grosser <grosser_at_fim.uni-passau.de>

> Hi,
>
> I just bought two external USB hard drives and tried to use them on
>
> http://svn.freebsd.org/base/stable/8_at_196642
>
> The drives are: Western Digital My Passport Essential (500 and 320 GB)
>
> After connecting them I get these log messages:
> ------------------------------------------------------------------------
> ugen0.2: <Western Digital> at usbus0
> umass0: <Western Digital External HDD, class 0/0, rev 2.00/1.75, addr 2>
> on usbus0
> umass0:  SCSI over Bulk-Only; quirks = 0x0000
> umass0:0:0:-1: Attached to scbus0
> ------------------------------------------------------------------------
>
> However there is never any 'ad' device created. So I am not able to use
> the harddisk.
>
>
> "camcontrol devlist" does not return anything.
>
>
> "camcontrol rescan all" blocks in:
> ------------------------------------------------------------------------
>  1279 root   1  45    0  3472K   828K cbwait  0   0:00  0.00% camcontrol
> ------------------------------------------------------------------------
> and returns after removing the usb disk.
>
>
> After removing the disk I always get:
> ------------------------------------------------------------------------
> % sudo camcontrol rescan all
> camcontrol: CAMIOCOMMAND ioctl failed: Invalid argument
> ------------------------------------------------------------------------
>
>
> /var/log/messages output is attached for
> hw.usb.debug=99999, hw.usb.umass.debug=99999
>
> For this log first the drive was attached and afterwords it was detached
> again.
>
> Is there anything useful I can try to debug this problem? I have DTRACE
> and DDB/KDB installed.
>
> Thanks
>
> Tobi
>
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do the drives work when you plug them in via a powered usb hub?