Date: Wed, 6 May 2015 14:28:12 -0700 From: NGie Cooper <yaneurabeya@gmail.com> To: Ryan Stone <rysto32@gmail.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: What's required to make removal of a mounted USB stick safe? Message-ID: <CAGHfRMCRKoq7miFRrXYEmQiaHd%2BBat2t6Ab72%2BNJLW0=LQk40Q@mail.gmail.com> In-Reply-To: <CAFMmRNwTi2GOEHN1tDQ7o1-VAtykT%2Bz3g%2B70qaDMenThSrSRgQ@mail.gmail.com> References: <CAFMmRNwTi2GOEHN1tDQ7o1-VAtykT%2Bz3g%2B70qaDMenThSrSRgQ@mail.gmail.com>
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On Wed, May 6, 2015 at 1:49 PM, Ryan Stone <rysto32@gmail.com> wrote: > 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 involved > 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. > > A co-worker has been looking at this but I don't feel that we understand > the problem well enough to produce a real fix. All that we've been doing > so far is papering over the explicit panics without having a full > understanding of what we're doing. What version are you working on and how is the USB stick mounted (/, /mnt, etc)? Thanks!
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