Date: Tue, 11 Jan 2011 21:54:32 +0100 From: "C. P. Ghost" <cpghost@cordula.ws> To: Boris Kochergin <spawk@acm.poly.edu> Cc: freebsd-current@freebsd.org, d@delphij.net Subject: Re: why panic(9) ? Message-ID: <AANLkTimb=3-HQFCrt1j0wpEtnP6bjdCd5gQq1AxTj3=c@mail.gmail.com> In-Reply-To: <4D2CC27F.7040206@acm.poly.edu> References: <AANLkTi=OQbS-0jJx0YwZhM7xDWPLOkaYYZAYfESUEvvM@mail.gmail.com> <4D2CBE45.90209@delphij.net> <AANLkTinzWR63aeAhwgwQAMX5-ghfHJ%2BEZ83xb8mH7Tj%2B@mail.gmail.com> <4D2CC27F.7040206@acm.poly.edu>
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On Tue, Jan 11, 2011 at 9:50 PM, Boris Kochergin <spawk@acm.poly.edu> wrote: >> Exactly. One area where the kernel should be made more robust >> is UFS with disappearing disks (e.g. USB mounted file systems, >> or, as recently happened here with a loose external SATA cable). >> Panicing here is REALLY annoying. ;-) > > Getting slightly off-topic here, but... there was progress made on this > front a while ago. You can reliably detach at least USB storage with a > mounted MSDOSFS or UFS filesystem without soft updates and not risk a system > panic. There will be a panic if soft updates are enabled on UFS, however, at > least as of my last test in 2010. Hmmm... yes, you're absolutely right: every time I had those panics was with softupdates enabled. No recent panic with UFS without softupdates that I remember, nor with msdosfs btw. > -Boris -cpghost. -- Cordula's Web. http://www.cordula.ws/
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