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Date:      Mon, 25 Feb 2013 15:25:47 +0100
From:      Wouter Oosterveld <wouter.oosterveld@trimm.nl>
To:        'Hans Petter Selasky' <hselasky@c2i.net>
Cc:        "mav@freebsd.org" <mav@freebsd.org>, "freebsd-gnats-submit@freebsd.org" <freebsd-gnats-submit@freebsd.org>, "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org>
Subject:   RE: usb/176417: [xhci][cam][umass] kernelpanic while removing plugged in disk
Message-ID:  <0CC28A5E3CD2E64386838267A534E8A98BF02DDFD8@cheyenne.trimm.local>
In-Reply-To: <201302251519.53882.hselasky@c2i.net>
References:  <201302251119.r1PBJIi4034741@red.freebsd.org> <201302251233.30790.hselasky@c2i.net> <0CC28A5E3CD2E64386838267A534E8A98BF02DDFD6@cheyenne.trimm.local> <201302251519.53882.hselasky@c2i.net>

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>On Monday 25 February 2013 15:09:12 Wouter Oosterveld wrote:
>> Please not all this happened while the drive was plugged in at the time.
>>=20
>> Is the powersafe feature of USB3.0 not understood (if any) by the=20
>> kernel or something?
>>=20
>> -Wouter

>How long was the drive plugged when this happened? Usually a sudden discon=
nect means one or more of:

It was plugged in for 4 days.=20

>- USB device firmware crashed

Could be. We use the same type of drive on Windows Servers. Not seen there =
yet.

Not tested with this specific drive. Will do.

>- Cable issue

Could be.

Not tested will do.

>- Power loss or insufficient power

Drive has its own power. LED is blinking as if in "no connection" or "power=
safe" (conjecture).

>--HPS

-----Original Message-----
From: Hans Petter Selasky [mailto:hselasky@c2i.net]=20
Sent: maandag 25 februari 2013 15:20
To: Wouter Oosterveld
Cc: freebsd-usb@freebsd.org; freebsd-gnats-submit@freebsd.org; mav@freebsd.=
org
Subject: Re: usb/176417: [xhci][cam][umass] kernelpanic while removing plug=
ged in disk

On Monday 25 February 2013 15:09:12 Wouter Oosterveld wrote:
> Please not all this happened while the drive was plugged in at the time.
>=20
> Is the powersafe feature of USB3.0 not understood (if any) by the=20
> kernel or something?
>=20
> -Wouter

How long was the drive plugged when this happened? Usually a sudden disconn=
ect means one or more of:

- USB device firmware crashed
- Cable issue
- Power loss or insufficient power

--HPS



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