unable to mount root from USB

[Hans Petter Selasky]

On Saturday 15 August 2009 19:25:54 Deniz wrote:
> Hello,
>
> today I updated my sources (CURRENT) and built a new system (world +
> kernel).
> But unfortunately, this action didn't end well 'cause I'm not able to boot
> Freebsd
> from my Maxtor One Touch USB HDD anymore.
> Even booting from kernel.old doesnt't work anymore (tried everything:
> normal, single user mode, acpi disabled/enabled).
>
> Here is a short part of the boot messages (copied it manually):
>
> ##################################
>
> usbus0: 12Mbps Full Speed USB v1.0
> usbus1: 12Mbps Full Speed USB v1.0
> usbus2: 12Mbps Full Speed USB v1.0
> usbus3: 12Mbps Full Speed USB v1.0
> usbus4: 480Mbps High Speed USB v2.0
> SMP: AP CPU #1 Launched!
> Root mount wainting for: usbus4 usbus3 usbus2 usbus1 usbus0
> ugen0.1: <Intel> at usbus0
> uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
> uhub0: 2 ports with 2 removable, self powered
> ugen1.1: <Intel> at usbus0
> uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
> uhub1: 2 ports with 2 removable, self powered
> ugen4.1: <Intel> at usbus4
> uhub2: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus 4
> Root mount wainting for: usbus4 usbus3 usbus2
> Root mount wainting for: usbus4 usbus3 usbus2
> Root mount wainting for: usbus4 usbus3 usbus2
> uhub2: 8 ports with 8 removable, self powered
> ugen2.1: <Intel> at usbus2
> uhub3: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
> uhub3: 2 ports with 2 removable, self powered
> ugen3.1: <Intel> at usbus3
> uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus3
> uhub4: 2 ports with 2 removable, self powered
> Root mount waiting for: usbus4
> usb_alloc_device:1626: getting device descriptor at addr 2 failed,
> USB_ERR_TIMEOUT!
> Root mount wainting for: usbus4
> Root mount wainting for: usbus4
> usbd_req_re_enumerate:1553: getting device descriptor at addr 2 failed,
> USB_ERR_TIMEOUT!
> Root mount wainting for: usbus4
> Root mount wainting for: usbus4
> usbd_req_re_enumerate:1553: getting device descriptor at addr 2 failed,
> USB_ERR_TIMEOUT!
> ugen4.2: <(null)> at usbus4 (disconnected)
> uhub_reattach_port:440: could not allocate new device!
> Trying to mount root from ufs:/dev/da0s4a
>
> ######## [and the HDD suddenly shuts down] ##########
>
> ROOT MOUNT ERROR:
> If you have invalid mount options, rebott, and first try the following from
> the loader prompt:
>
>           set vfs.root.mountfrom.options=rw
>
> and the remove invalid mount options from /etc/fstab.
>
> Loader variables:
> vfs.root.mountfrom=ufs:/dev/da0s4a
> vfs.root.mountform.options=rw
>
> [manual boot prompt]
> mountroot> ?
>
> List of GEOM managed disk devices:
>
> Loader variables:
> ....
>
> ##################################
>
> I hope this problem wasn't reported already, but I did not found
> everything. This was not reported as a PR, 'cause I don't know if this is a
> real bug or just my fault.

You could try setting the following sysctl:

hw.usb.ehci.no_hs=1

--HPS