similar to: vhost-blk and qemu

On Thu, Jul 16, 2020 at 11:33:44AM +0200, Stefano Garzarella wrote: > +Cc Michael, Stefan, virtualization at lists.linux-foundation.org > > On Thu, Jul 16, 2020 at 09:06:14AM +0100, Richard W.M. Jones wrote: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=1857515 > > > > A virtio-blk disk which is backed by a raw file on an SSD, > > inside the guest

Hi, I am wondering if someone in this list who has used VHOST-BLK in the past could help me. I am experimenting with VHOST-BLK with the codes I got from: QEMU - git://github.com/asias/qemu.git KERNEL - git://github.com/asias/linux.git The VM I am booting is compiled with MSIX config options. I am seeing a failure in the QEMU function msix_enabled during the initialization of the block device

Hi, I am wondering if someone in this list who has used VHOST-BLK in the past could help me. I am experimenting with VHOST-BLK with the codes I got from: QEMU - git://github.com/asias/qemu.git KERNEL - git://github.com/asias/linux.git The VM I am booting is compiled with MSIX config options. I am seeing a failure in the QEMU function msix_enabled during the initialization of the block device

Hi Kernel KVM folks and Michael, I am trying to make VHOST-BLK to work by myself since I did not hear from Asias on my personal mail to him. I will be grateful to you for your time and response. The problem I am seeing is there is no response seen by the VM through the HOST has executed the IO successfully and issued vhost_add_used_and_signal. Here is my question. Which code in QEMU issues

Hi Kernel KVM folks and Michael, I am trying to make VHOST-BLK to work by myself since I did not hear from Asias on my personal mail to him. I will be grateful to you for your time and response. The problem I am seeing is there is no response seen by the VM through the HOST has executed the IO successfully and issued vhost_add_used_and_signal. Here is my question. Which code in QEMU issues

On Sun, Jun 28, 2020 at 02:34:37PM +0800, Jason Wang wrote: > > On 2020/6/25 ??9:57, Stefan Hajnoczi wrote: > > These patches are not ready to be merged because I was unable to measure a > > performance improvement. I'm publishing them so they are archived in case > > someone picks up this work again in the future. > > > > The goal of these patches is to

On Sun, Jun 28, 2020 at 02:34:37PM +0800, Jason Wang wrote: > > On 2020/6/25 ??9:57, Stefan Hajnoczi wrote: > > These patches are not ready to be merged because I was unable to measure a > > performance improvement. I'm publishing them so they are archived in case > > someone picks up this work again in the future. > > > > The goal of these patches is to

On 11/21/2017 10:50 AM, Christian Borntraeger wrote: > > > On 11/21/2017 09:35 AM, Christian Borntraeger wrote: >> >> >> On 11/20/2017 09:52 PM, Jens Axboe wrote: >>> On 11/20/2017 01:49 PM, Christian Borntraeger wrote: >>>> >>>> >>>> On 11/20/2017 08:42 PM, Jens Axboe wrote: >>>>> On 11/20/2017 12:29 PM,

On 11/21/2017 10:50 AM, Christian Borntraeger wrote: > > > On 11/21/2017 09:35 AM, Christian Borntraeger wrote: >> >> >> On 11/20/2017 09:52 PM, Jens Axboe wrote: >>> On 11/20/2017 01:49 PM, Christian Borntraeger wrote: >>>> >>>> >>>> On 11/20/2017 08:42 PM, Jens Axboe wrote: >>>>> On 11/20/2017 12:29 PM,

On 11/21/2017 11:27 AM, Jens Axboe wrote: > On 11/21/2017 11:12 AM, Christian Borntraeger wrote: >> >> >> On 11/21/2017 07:09 PM, Jens Axboe wrote: >>> On 11/21/2017 10:27 AM, Jens Axboe wrote: >>>> On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >>>>> Bisect points to >>>>> >>>>>

On Fri, Nov 02, 2018 at 06:21:22PM +0000, Vitaly Mayatskikh wrote: > vhost_blk is a host-side kernel mode accelerator for virtio-blk. The > driver allows VM to reach a near bare-metal disk performance. See IOPS > numbers below (fio --rw=randread --bs=4k). > > This implementation uses kiocb interface. It is slightly slower than > going directly through bio, but is simpler and

+Cc Michael, Stefan, virtualization at lists.linux-foundation.org On Thu, Jul 16, 2020 at 09:06:14AM +0100, Richard W.M. Jones wrote: > > https://bugzilla.redhat.com/show_bug.cgi?id=1857515 > > A virtio-blk disk which is backed by a raw file on an SSD, > inside the guest shows rotational = 1. > > I assumed that qemu must have a "rotational" property for disks and

+Cc Michael, Stefan, virtualization at lists.linux-foundation.org On Thu, Jul 16, 2020 at 09:06:14AM +0100, Richard W.M. Jones wrote: > > https://bugzilla.redhat.com/show_bug.cgi?id=1857515 > > A virtio-blk disk which is backed by a raw file on an SSD, > inside the guest shows rotational = 1. > > I assumed that qemu must have a "rotational" property for disks and

tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: b5311f2ee9cf07e73303ae792bdc363a91b9df0b commit: 6190efb08c16dcd68c64b096a28f47ab33f017d7 [6/17] vhost: drop vringh dependency config: x86_64-randconfig-n0-08020724 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: git checkout 6190efb08c16dcd68c64b096a28f47ab33f017d7 # save

tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: b5311f2ee9cf07e73303ae792bdc363a91b9df0b commit: 6190efb08c16dcd68c64b096a28f47ab33f017d7 [6/17] vhost: drop vringh dependency config: x86_64-randconfig-n0-08020724 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: git checkout 6190efb08c16dcd68c64b096a28f47ab33f017d7 # save

On Tue, Mar 28, 2017 at 04:39:25PM +0800, Changpeng Liu wrote: > Currently virtio-blk driver does not provide discard feature flag, so the > filesystems which built on top of the block device will not send discard > command. This is okay for HDD backend, but it will impact the performance > for SSD backend. > > Add a feature flag VIRTIO_BLK_F_DISCARD and command

vhost-blk is an in-kernel virito-blk device accelerator. Due to lack of proper in-kernel AIO interface, this version converts guest's I/O request to bio and use submit_bio() to submit I/O directly. So this version any supports raw block device as guest's disk image, e.g. /dev/sda, /dev/ram0. We can add file based image support to vhost-blk once we have in-kernel AIO interface. There are

vhost-blk is an in-kernel virito-blk device accelerator. Due to lack of proper in-kernel AIO interface, this version converts guest's I/O request to bio and use submit_bio() to submit I/O directly. So this version any supports raw block device as guest's disk image, e.g. /dev/sda, /dev/ram0. We can add file based image support to vhost-blk once we have in-kernel AIO interface. There are

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn> The variable vq is initialized but never used otherwise, so remove the unused variable. Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn> --- drivers/vhost/blk.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/vhost/blk.c b/drivers/vhost/blk.c index 658c5f9..d9b245b 100644 --- a/drivers/vhost/blk.c +++

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn> The variable vq is initialized but never used otherwise, so remove the unused variable. Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn> --- drivers/vhost/blk.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/vhost/blk.c b/drivers/vhost/blk.c index 658c5f9..d9b245b 100644 --- a/drivers/vhost/blk.c +++