From owner-freebsd-current@FreeBSD.ORG Fri Jul 10 19:27:45 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 606871065673; Fri, 10 Jul 2009 19:27:45 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.247]) by mx1.freebsd.org (Postfix) with ESMTP id 00A2F8FC24; Fri, 10 Jul 2009 19:27:44 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: by an-out-0708.google.com with SMTP id d14so573354and.13 for ; Fri, 10 Jul 2009 12:27:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=uP3vPsKsWUB9ojOKhaG4bPYmyX9PDs6vzTSyugPrcAc=; b=i7eo2LL4SyIzM0OwEJ8kHo59EKz1jitBapP6KLgQExA+SmvlznNUHtfAvrs77hdjYW 5LE7kEmMghGDVWt7AqaPkHT4q6o8GbMrrcPUzzDKxlQckDdv6yo6hEsRNJSJiMSYYlA0 7qRu000lzTtT9E3wGy8iVvF+DZPnFipuz6sgw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=jYXpMJv7rmiv4ajZqOSfqXDyrSbK5VcJJXQXYtq+0UuIg5Is1Ptp0Hb3m3ZyCTbGgX U+z7TW7Dwj2JVkAiHKCo3qV/IUGvjRUlAuEqQQIUUA7JBwk5SVQaMyKan4ncTvuBcR9W A5lEoERfCx9LKl6szwjMMNEcWayGb56idZwFw= MIME-Version: 1.0 Sender: mat.macy@gmail.com Received: by 10.100.254.12 with SMTP id b12mr3210057ani.43.1247254064410; Fri, 10 Jul 2009 12:27:44 -0700 (PDT) In-Reply-To: <45291598-D091-4E90-B968-22E59BEB3846@exscape.org> References: <72163521-40BF-4764-8B74-5446A88DFBF8@exscape.org> <45291598-D091-4E90-B968-22E59BEB3846@exscape.org> Date: Fri, 10 Jul 2009 12:27:44 -0700 X-Google-Sender-Auth: 85fa16ab9ade5e38 Message-ID: <3c1674c90907101227ueab78eem6f8c5c7fdf0337cc@mail.gmail.com> From: Kip Macy To: Thomas Backman Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org, FreeBSD current Subject: Re: Reproducible ZFS panic, w/ script (Was: "New" ZFS crash on FS (pool?) unmount/export) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Jul 2009 19:27:46 -0000 "zfs export" does a forced unmount. We may not be properly handling dangling references. -Kip On Fri, Jul 10, 2009 at 12:25 PM, Thomas Backman wrote: > On Jul 10, 2009, at 21:01, Thomas Backman wrote: >> >> OK, I've finally written a script that reproduces this panic for me every >> time (6-7 tries in a row should be good enough, plus one on another box). It >> would be great to have a few testers - and if you do test it, PLEASE report >> your results here - positive or negative! >> The main aim is, of course, to provide ZFS devs with their own core dumps, >> DDB consoles and whatnot to possibly resolve this issue. >> [...] >> Back to the panic: >> The problem appears to be related to clones somehow - the first two times >> I ran in to this panic (in real use) was when messing with clone/promote... >> so that's what this script does. > > Damnit. Very sorry for the noise, but I just noticed that it IS NOT related > to the clones. It crashes with the clone/promote lines (#77-78) commented > out, too... > Now I'm stumped as to where the issue is, I hope the previous mail can help > track it down. > A very similar setup runs every night, and it "only" crashes about one time > in 10 or so. This crashes *every* time and I don't really see the difference > between the commands the scripts run. Oh well... > > Regards, > Thomas > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > -- When bad men combine, the good must associate; else they will fall one by one, an unpitied sacrifice in a contemptible struggle. Edmund Burke