Date: Thu, 13 Dec 2012 10:14:03 -0800 From: olivier <olivier777a7@gmail.com> To: Andriy Gapon <avg@freebsd.org> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: NFS/ZFS hangs after upgrading from 9.0-RELEASE to -STABLE Message-ID: <CALC5%2B1MpTUxtfJFN2Zu8%2BOSQ81ioEOTWApEY7zLB1tUkdsUj%2BQ@mail.gmail.com> In-Reply-To: <50CA1639.1010409@FreeBSD.org> References: <CALC5%2B1Ptc=c_hxfc_On9iDN4AC_Xmrfdbc1NgyJH2ZxP6fE0Aw@mail.gmail.com> <50C9AFC6.6080902@FreeBSD.org> <CALC5%2B1MRurpbznOYrnE%2BK%2B=BEuj80iqJUbYkLN7SKFwtKqbE1Q@mail.gmail.com> <50CA1639.1010409@FreeBSD.org>
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On Thu, Dec 13, 2012 at 9:54 AM, Andriy Gapon <avg@freebsd.org> wrote: > Google for "zfs deadman". This is already committed upstream and I think > that it > is imported into FreeBSD, but I am not sure... Maybe it's imported just > into the > vendor area and is not merged yet. > Yes, that's exactly what I had in mind. The logic for panicking makes sense. As far as I can tell you're correct that deadman is in the vendor area but not merged. Any idea when it might make it into 9-STABLE? Thanks Olivier > So, when enabled this logic would panic a system as a way of letting know > that > something is wrong. You can read in the links why panic was selected for > this job. > > And speaking FreeBSD-centric - I think that our CAM layer would be a > perfect place > to detect such issues in non-ZFS-specific way. > > -- > Andriy Gapon >
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