From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50942) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e5Qms-0007Oo-HY for qemu-devel@nongnu.org; Fri, 20 Oct 2017 02:28:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e5Qmr-000563-CM for qemu-devel@nongnu.org; Fri, 20 Oct 2017 02:28:06 -0400 Date: Fri, 20 Oct 2017 14:27:57 +0800 From: Fam Zheng Message-ID: <20171020062757.GE29815@lemon> References: <20171009125940.24220-1-ashijeetacharya@gmail.com> <20171009141236.GC28199@lemon> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171009141236.GC28199@lemon> Subject: Re: [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Ashijeet Acharya Cc: kwolf@redhat.com, qemu-block@nongnu.org, stefanha@gmail.com, qemu-devel@nongnu.org, mreitz@redhat.com, jsnow@redhat.com On Mon, 10/09 22:12, Fam Zheng wrote: > On Mon, 10/09 18:29, Ashijeet Acharya wrote: > > Optimization test results: > > > > This patch series improves 128 KB sequential write performance to an > > empty VMDK file by 54% > > > > Benchmark command: ./qemu-img bench -w -c 1024 -s 128K -d 1 -t none -f > > vmdk test.vmdk > > > > Changes in v9: > > - rebase the series > > Thanks, looks good to me, applied: > > https://github.com/famz/qemu/tree/staging Ashijeet: I've been testing my branch and it seems installing Fedora/CentOS to a VMDK image is broken with your patches applied. Both guest and QEMU are responsive, but the installing of packages stops to make any progress at some point: Installing rootfiles.noarch (317/318) Installing langpacks-en.noarch (318/318) Performing post-installation setup tasks Configuring fedora-release.noarch Configuring filesystem.x86_64 Configuring GeoIP-GeoLite-data.noarch Configuring python3.x86_64 Configuring fedora-logos.x86_64 Configuring kernel-core.x86_64 # hang here Can you reproduce this on your machine? My command line is something like this: qemu-system-x86_64 -enable-kvm -cpu host -m 1G -qmp unix:/home/fam/.q/qemu-8DOC9EF4/qmp,server,nowait -name 8DOC9EF4 -netdev user,id=vnet,hostfwd=:0.0.0.0:10022-:22 -device virtio-net-pci,netdev=vnet -drive file=/var/tmp/test2.vmdk,if=none,id=drive-1,cache=none,aio=native -device virtio-blk-pci,drive=drive-1 -cdrom /stor/iso/CentOS-6.9-x86_64-minimal.iso -pidfile /home/fam/.q/qemu-8DOC9EF4/pid qemu.git master doesn't have this problem. So I'll drop this series from the pull request until it is resolved. Fam