From owner-freebsd-fs@FreeBSD.ORG Thu Aug 22 12:41:26 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 5CCE7B99 for ; Thu, 22 Aug 2013 12:41:26 +0000 (UTC) (envelope-from etnapierala@gmail.com) Received: from mail-bk0-x234.google.com (mail-bk0-x234.google.com [IPv6:2a00:1450:4008:c01::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id DF1092A1D for ; Thu, 22 Aug 2013 12:41:25 +0000 (UTC) Received: by mail-bk0-f52.google.com with SMTP id e11so651197bkh.39 for ; Thu, 22 Aug 2013 05:41:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=o4IHZxLqOcUj8a5BkRf3s8SOfm23tAMVvLf2pSVx0Qs=; b=pCqab4ny1Etp96Qd0EWPVU4WfKB+2jWLn76UMMvYVzE8P+YvcDGUkxxSERBn9RFO7j 1JoqZ5wVpY3+PvVQm2bVkkdC8I+Ds2Jyqtc9JcRpH+gSRzOsvwqlk0dVkmHIZRNSOTJi ha2FQ9Synhc4L7aBp6mLwDtiVJ1FgRPWa5Q0HavajDcGmdtY/lfENwI/Z7XPlVFJzuDA Vw0/WXmw5QHShx97RlgXaa7Mx2w1El3Bxcgq4WKpR40jInCZ/FVGEkpNsxffGZrB1pQN nIKiHteOAQppqUtLMj84f5odE3Es2iDpqcPcHShcxLcvKAYlr16jUI8drSiV9Mn91P+u +wEQ== X-Received: by 10.204.240.11 with SMTP id ky11mr10118214bkb.21.1377175284035; Thu, 22 Aug 2013 05:41:24 -0700 (PDT) Received: from [192.168.1.104] (45.81.datacomsa.pl. [195.34.81.45]) by mx.google.com with ESMTPSA id kk2sm2959707bkb.10.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 22 Aug 2013 05:41:23 -0700 (PDT) Sender: =?UTF-8?Q?Edward_Tomasz_Napiera=C5=82a?= Subject: Re: 9.2-RC1: LORs / Deadlock with SU+J on HAST in "memsync" mode Mime-Version: 1.0 (Apple Message framework v1283) Content-Type: text/plain; charset=iso-8859-2 From: =?iso-8859-2?Q?Edward_Tomasz_Napiera=B3a?= In-Reply-To: <20130822093138.GO4972@kib.kiev.ua> Date: Thu, 22 Aug 2013 14:41:19 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <23FCE234-E811-4160-BCDD-B0E2B832DCD3@FreeBSD.org> References: <20130819115101.ae9c0cf788f881dc4de464c5@yamagi.org> <20130822102121.a799b116b0f6b0f7c90ba578@yamagi.org> <20130822093138.GO4972@kib.kiev.ua> To: Konstantin Belousov X-Mailer: Apple Mail (2.1283) Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Aug 2013 12:41:26 -0000 Wiadomo=B6=E6 napisana przez Konstantin Belousov w dniu 22 sie 2013, o = godz. 11:31: > On Thu, Aug 22, 2013 at 10:21:21AM +0200, Yamagi Burmeister wrote: >> Hello, >> attached is a file with the transcript of a dd session containing: >> - ps >> - trace >> - show pcpu >> - show allpcpu >> - show locks >> - show alllocks >> - show lockedvnods >> - alltrace >> If the attachement is eaten by mailman the file can be found here: >> http://deponie.yamagi.org/freebsd/debug/lor_hast/ddb2.txt >>=20 >> This is my first deadlock debug session. So if anything is still >> missing please tell me. >>=20 > This has absolutely nothing to do with the deadlock we trying to = catch. > On your case, it seems that all i/o on the box is stalled, and my = guess > is that hastd just recursed waiting for some i/o completion which = requires > working hastd to finish. >=20 > Talk to hastd author(s) about this. Isn't this just another case of deadlock caused by being out of bufs? --=20 If you cut off my head, what would I say? Me and my head, or me and my = body?