From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47663) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZN3tt-0003kC-DL for qemu-devel@nongnu.org; Wed, 05 Aug 2015 14:58:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZN3to-0000eE-Dq for qemu-devel@nongnu.org; Wed, 05 Aug 2015 14:58:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49336) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZN3to-0000e4-8c for qemu-devel@nongnu.org; Wed, 05 Aug 2015 14:58:48 -0400 Date: Wed, 5 Aug 2015 14:58:44 -0400 From: Jeff Cody Message-ID: <20150805185844.GD9878@localhost.localdomain> References: <1438142555-27011-1-git-send-email-namei.unix@gmail.com> <877fpj4kqw.wl%mitake@mitake-jiseki-PC> <20150729093135.GB22681@ubuntu-trusty> <20150730132744.GA11022@localhost.localdomain> <20150803004136.GC11733@ubuntu-trusty> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [sheepdog] [PATCH] sheepdog: fix overlapping metadata update List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Vasiliy Tolstov Cc: Kevin Wolf , Teruaki Ishizaki , Hitoshi Mitake , Hitoshi Mitake , qemu-devel@nongnu.org, sheepdog-ng@googlegroups.com, morita.kazutaka@gmail.com, sheepdog@lists.wpkg.org, Stefan Hajnoczi , Liu Yuan On Tue, Aug 04, 2015 at 11:07:16AM +0300, Vasiliy Tolstov wrote: > 2015-08-03 3:41 GMT+03:00 Liu Yuan : > > What did you mean by 'not able to completely install'? It is a installation > > problem or something else? > > > > i have simple test that works as: > 1) boot 3.18.x kernel and initrd with static compiled golang binary > 2) binary bringup dhcp network > 3) fetch from http gzipped raw qemu image > 3) in parallel decompress gzipped image and write it to disk > > this use-case determine previous error in qemu (that brings this discussion) > > > My QEMU or my patch? I guess you can test the same QEMU with my patch and with > > Hitoshi's patch separately. You know, different QEMU base might cover the > > difference. > > > > I'm test you and Hitoshi patch with qemu 2.4-rc0, i'm compile two > independent debian packages with you patch and with Hitoshi. > Install qemu with you patch to one node and with Hitoshi on another. > Runs sheep with local cluster driver. > I don't know how to determine qemu segfault in my case, does it > possible to build qemu with debugging via configure flags ang get more > detailed descriptions? > Hi Vasiliy, If you run configure with --disable-strip, it will not strip the debugging symbols from the binary after the build. Then, you can run gdb on qemu, and do a backtrace after you hit the segfault ('bt'). That may shed some light, and is a good place to start. Thanks, Jeff