From owner-freebsd-fs@FreeBSD.ORG Tue Oct 12 13:28:30 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A627A106566C for ; Tue, 12 Oct 2010 13:28:30 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id EAC168FC14 for ; Tue, 12 Oct 2010 13:28:29 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id QAA19436; Tue, 12 Oct 2010 16:28:26 +0300 (EEST) (envelope-from avg@icyb.net.ua) Message-ID: <4CB4627A.1010807@icyb.net.ua> Date: Tue, 12 Oct 2010 16:28:26 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.9) Gecko/20100920 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: Jeremy Chadwick References: <39F05641-4E46-4BE0-81CA-4DEB175A5FBE@free.de> <20101009111241.GA58948@icarus.home.lan> <4CB17983.3020907@icyb.net.ua> <20101011151508.GA10917@icarus.home.lan> <4CB32C75.2060000@icyb.net.ua> <20101011183707.GA13925@icarus.home.lan> <4CB3870F.7070107@icyb.net.ua> <20101012100709.GA29861@icarus.home.lan> <4CB4429C.9040109@icyb.net.ua> <20101012130245.GA32584@icarus.home.lan> In-Reply-To: <20101012130245.GA32584@icarus.home.lan> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: Locked up processes after upgrade to ZFS v15 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Oct 2010 13:28:30 -0000 on 12/10/2010 16:02 Jeremy Chadwick said the following: > On Tue, Oct 12, 2010 at 02:12:28PM +0300, Andriy Gapon wrote: >> I don't have an easy way to reproduce it. >> The theory is that you should sendfile a file with size which is not multiple of >> page size (4K) and then you should mmap and read the same file; the last step >> should lock up. >> Perhaps, tools/regression/sockets/sendfile/sendfile.c with the following patch >> would reproduce it? >> http://people.freebsd.org/~avg/sendfile.diff > > This patch only works on HEAD. I downloaded the HEAD version of > sendfile.c from here: > > http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/sockets/sendfile/sendfile.c?rev=1.7;content-type=text%2Fplain > > And the HEAD Makefile as well (since libmd linking is needed): > > http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/sockets/sendfile/Makefile?rev=1.6;content-type=text%2Fplain > > And then applied your patch. However, the result doesn't induce a > lock-up. Bummer. Oh, I am stupid - it should be a different process doing mmap, not the same one. -- Andriy Gapon