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Subject: Re: What's required to make removal of a mounted USB stick safe?
From: =?utf-8?Q?Edward_Tomasz_Napiera=C5=82a?= <trasz@FreeBSD.org>
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Date: Thu, 7 May 2015 08:23:10 +0200
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To: Ryan Stone <rysto32@gmail.com>
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Dnia 6 maj 2015 o godz. 22:49 Ryan Stone <rysto32@gmail.com> napisa=C5=82(a)=
:

> Currently FreeBSD stands a fair chance at panicking if a mounted USB drive=

> is removed while I/O is in flight.  Does anybody know what work is involve=
d
> to have the kernel safely recover from this case?  Losing data from the
> drive is expected of course but there's no reason that the entire kernel
> has to crash.

I've spent some time on this few years ago, and got it to work, except for o=
ne case: UFS with softupdates.  It's possible that some regressions have bee=
n introduced since then.  What's the filesystem?  Do you have a backtrace?