From owner-freebsd-stable@FreeBSD.ORG Tue Sep 20 03:25:00 2011 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9E6511065670; Tue, 20 Sep 2011 03:25:00 +0000 (UTC) (envelope-from hrs@FreeBSD.org) Received: from mail.allbsd.org (gatekeeper-int.allbsd.org [IPv6:2001:2f0:104:e002::2]) by mx1.freebsd.org (Postfix) with ESMTP id 8B1518FC0A; Tue, 20 Sep 2011 03:24:59 +0000 (UTC) Received: from alph.allbsd.org ([IPv6:2001:2f0:104:e010:862b:2bff:febc:8956]) (authenticated bits=128) by mail.allbsd.org (8.14.4/8.14.4) with ESMTP id p8K3Ojfg091994; Tue, 20 Sep 2011 12:24:55 +0900 (JST) (envelope-from hrs@FreeBSD.org) Received: from localhost (localhost [IPv6:::1]) (authenticated bits=0) by alph.allbsd.org (8.14.4/8.14.4) with ESMTP id p8K3OZw8027561; Tue, 20 Sep 2011 12:24:37 +0900 (JST) (envelope-from hrs@FreeBSD.org) Date: Tue, 20 Sep 2011 12:22:02 +0900 (JST) Message-Id: <20110920.122202.1039954481859032313.hrs@allbsd.org> To: pjd@FreeBSD.org, mm@FreeBSD.org, freebsd-stable@FreeBSD.org From: Hiroki Sato In-Reply-To: <20110911.054601.1424617155148336027.hrs@allbsd.org> References: <20110907.094717.2272609566853905102.hrs@allbsd.org> <20110910.044841.232160047547388224.hrs@allbsd.org> <20110911.054601.1424617155148336027.hrs@allbsd.org> X-PGPkey-fingerprint: BDB3 443F A5DD B3D0 A530 FFD7 4F2C D3D8 2793 CF2D X-Mailer: Mew version 6.3.51 on Emacs 23.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Multipart/Signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="--Security_Multipart(Tue_Sep_20_12_22_02_2011_324)--" Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.97 at gatekeeper.allbsd.org X-Virus-Status: Clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (mail.allbsd.org [IPv6:2001:2f0:104:e001::32]); Tue, 20 Sep 2011 12:24:56 +0900 (JST) X-Spam-Status: No, score=-104.6 required=13.0 tests=BAYES_00, CONTENT_TYPE_PRESENT, RDNS_NONE, SPF_SOFTFAIL, USER_IN_WHITELIST autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on gatekeeper.allbsd.org Cc: attilio@FreeBSD.org, kib@FreeBSD.org Subject: Re: ZFS panic on a RELENG_8 NFS server X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Sep 2011 03:25:00 -0000 ----Security_Multipart(Tue_Sep_20_12_22_02_2011_324)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hiroki Sato wrote in <20110911.054601.1424617155148336027.hrs@allbsd.org>: hr> Hiroki Sato wrote hr> in <20110910.044841.232160047547388224.hrs@allbsd.org>: hr> hr> hr> Hiroki Sato wrote hr> hr> in <20110907.094717.2272609566853905102.hrs@allbsd.org>: hr> hr> hr> hr> hr> During this investigation an disk has to be replaced and resilvering hr> hr> hr> it is now in progress. A deadlock and a forced reboot after that hr> hr> hr> make recovering of the zfs datasets take a long time (for committing hr> hr> hr> logs, I think), so I will try to reproduce the deadlock and get a hr> hr> hr> core dump after it finished. hr> hr> hr> hr> I think I could reproduce the symptoms. I have no idea about if hr> hr> these are exactly the same as occurred on my box before because the hr> hr> kernel was replaced with one with some debugging options, but these hr> hr> are reproducible at least. hr> hr> hr> hr> There are two symptoms. One is a panic. A DDB output when the panic hr> hr> occurred is the following: hr> hr> I am trying vfs.lookup_shared=0 and seeing how it goes. It seems the hr> box can endure a high load which quickly caused these symptoms. There was no difference by the knob. The same panic or unresponsiveness still occurs in about 24-32 hours or so. -- Hiroki ----Security_Multipart(Tue_Sep_20_12_22_02_2011_324)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEABECAAYFAk54BtoACgkQTyzT2CeTzy0p9gCdFS38tXvE6sAJhynPuZNmWlg/ kYEAoJE8FHCjXGwxo8+KgIRaTVjv9AaC =/2gn -----END PGP SIGNATURE----- ----Security_Multipart(Tue_Sep_20_12_22_02_2011_324)----