Date: Thu, 30 Jul 2009 18:41:29 +0200 From: Thomas Backman <serenity@exscape.org> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-fs@freebsd.org, FreeBSD current <freebsd-current@freebsd.org>, Pawel Jakub Dawidek <pjd@freebsd.org> Subject: Re: zfs: Fatal trap 12: page fault while in kernel mode Message-ID: <C7FEDA88-7A89-45DB-BD16-4C8816D17E0D@exscape.org> In-Reply-To: <4A71BED8.7050300@freebsd.org> References: <20090727072503.GA52309@jpru.ffm.jpru.de> <20090729084723.GD1586@garage.freebsd.pl> <F4F82B3E-C119-40EF-9AA4-937052876D1E@exscape.org> <4A7030B6.8010205@icyb.net.ua> <97D5950F-4E4D-4446-AC22-92679135868D@exscape.org> <4A7048A9.4020507@icyb.net.ua> <52AA86CB-6C06-4370-BA73-CE19175467D0@exscape.org> <4A705299.8060504@icyb.net.ua> <D3491B77-DA5C-4E10-BE1D-D6EF8CFB112E@exscape.org> <4A7054E1.5060402@icyb.net.ua> <5918824D-A67C-43E6-8685-7B72A52B9CAE@exscape.org> <4A705E50.8070307@icyb.net.ua> <4A70728C.7020004@freebsd.org> <6D47A34B-0753-4CED-BF3D-C505B37748FC@exscape.org> <4A708455.5070304@freebsd.org> <86983A55-E5C4-4C04-A4C7-0AE9A9EE37A3@exscape.org> <4A718E03.6030909@freebsd.org> <71A038EC-02B1-4606-96C2-5E84BE80F005@exscape.org> <4A719CA4.4060400@freebsd.org> <19347561-3CE6-40B3-930A-EB9925D3AFD1@exscape.org> <4A71AD29.10705@freebsd.org> <7544AED1-1216-4A24-B287-F54117641F76@exscape.org> <4 A71B239.8060007@freebsd.org> <3AA3C1CB-CEF7-46CC-A9C7-1648093D679E@exsca! pe.org> <4A71BED8.7050300@freebsd.org>
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On Jul 30, 2009, at 17:40, Andriy Gapon wrote: > on 30/07/2009 18:25 Thomas Backman said the following: >> PS. I'll test Pawel's patch sometime after dinner. ;) > > I believe that you should get a perfect result with it. > > -- > Andriy Gapon If I dare say it, you were right! I've been testing for about half an hour or so (probably a bit more) now. Still using DEBUG_VFS_LOCKS, and I've tried the test case several times, ran an initial backup (i.e. destroy target pool and send|recv the entire pool) and a few incrementals. Rebooted, tried it again. No panic, no problems! :) Let's hope it stays this way. So, in short: With that patch (copied here just in case: http://exscape.org/temp/zfs_vnops.working.patch ) and the libzfs patch linked previously, it appears zfs send/recv works plain fine. I have yet to try it with clone/promote and stuff, but since that gave the same panic that this solved, I'm hoping there will be no problems with that anymore. Regards, Thomas
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