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Considering that the technic of SPDK + QEMU is making progress toward maturity. Personally I'd like to do the integration work. Not sure somebody would mind to give me some clue on that? Because I'm not familiar with libguestfs code structures. Thanks, Bob

Forwarded to centos mailing list -----Original Messages----- From: wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn> Sent Time: 2018-10-30 14:06:00 (Tuesday) To: "storage performance development kit" <spdk at lists.01.org> Cc: centos at centos.org, qemu-discuss at nongnu.org Subject: Re: [SPDK] VM boot failed sometimes if using vhost-user-blk with spdk I enable debug of systemd-udevd by changing guest's /etc/udev/udev.conf to this: udev_log="debug" and regenerate initramfs. Then,...

Hi guys, During the last few weeks, I've been looking at how to use SPDK as QEMU's bootable rootfs disk. I managed to boot up a SPDK rootfs disk by using OVMF UEFI boot-loader. And in order to deploy the guest OS before start-up(which has a unrecognizable filesystem to the host), I have written a small patch for the libguestfs. It was based on Redhat's CentOS l...

I have been following the patches on nvme support on the list and was wondering: If I wanted to build a vm host to be on the bleeding edge for nvme and spdk fun in libvirt, which linux distro -- fedora/ubuntu/centos/etc -- should I pick?

On Wed, Jul 18, 2018 at 12:10:30PM +0800, Bob Chen wrote: > Considering that the technic of SPDK + QEMU is making progress toward > maturity. > > Personally I'd like to do the integration work. Not sure somebody would > mind to give me some clue on that? Because I'm not familiar with libguestfs > code structures. If qemu supports SPDK then we should get it "for fr...

...at 5:40 AM Michal Privoznik <mprivozn@redhat.com> wrote: > > On 11/27/19 4:12 PM, Mauricio Tavares wrote: > > I have been following the patches on nvme support on the list and was > > wondering: If I wanted to build a vm host to be on the bleeding edge > > for nvme and spdk fun in libvirt, which linux distro -- > > fedora/ubuntu/centos/etc -- should I pick? > > > > For NVMe itself it probably doesn't matter as it doesn't require any > special library. However, I'm not so sure about SPDK, esp. whether my > NVMe patches is what you re...

On 11/27/19 4:12 PM, Mauricio Tavares wrote: > I have been following the patches on nvme support on the list and was > wondering: If I wanted to build a vm host to be on the bleeding edge > for nvme and spdk fun in libvirt, which linux distro -- > fedora/ubuntu/centos/etc -- should I pick? > For NVMe itself it probably doesn't matter as it doesn't require any special library. However, I'm not so sure about SPDK, esp. whether my NVMe patches is what you really need? My patches enab...

On 11/27/19 10:12 AM, Mauricio Tavares wrote: > I have been following the patches on nvme support on the list and was > wondering: If I wanted to build a vm host to be on the bleeding edge > for nvme and spdk fun in libvirt, which linux distro -- > fedora/ubuntu/centos/etc -- should I pick? IMO Fedora, most of libvirt is developed by @redhat people so there's plenty of Fedora expertise around - Cole

...sed for vhost-user-blk as well > > Can you provide some examples of full qemu command lines using > vhost-user-blk and vhost-user-scsi? Just linking to examples else where > is fine, but I'm wondering if there's more context You could check the vhost-user-scsi/blk examples from SPDK pages: https://spdk.io/doc/vhost.html > > Internally we already have an abstraction for vhost-scsi: > > <hostdev mode='subsystem' type='scsi_host'> > <source protocol='vhost' wwpn='XXX'/> > </hostdev> > > >...

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

...vhostuser) for disk label; 2. Add queue sub-label for disk to support multiqueue(<queue num='4'/>) or reusing the driver label (<driver name='vhostuser' queues='4'), which one is better? Qemu support multiqueue like this: -device vhost-user-scsi-pci,id=scsi0,chardev=spdk_vhost_scsi0,num_queues=4 -device vhost-user-blk-pci,chardev=spdk_vhost_blk0,num-queues=4 Another question: When qemu is connecting to a vhost-user-scsi controller[1], there may exist multiple LUNs under one target, then one disklabel(<disk/>) will represent multiple SCSI LUNs, the 'dev&...

...Graphics, desktop virtualization and virtual GPU * New storage features * High availability, live migration and fault tolerance * Emulation and TCG * Firmware: ACPI, UEFI, coreboot, U-Boot, etc. Management and infrastructure * Managing KVM: Libvirt, OpenStack, oVirt, etc. * Storage: Ceph, Gluster, SPDK, etc.r * Network Function Virtualization: DPDK, OPNFV, OVN, etc. * Provisioning =============== SUBMITTING YOUR PROPOSAL =============== Abstracts due: June 15, 2017 Please submit a short abstract (~150 words) describing your presentation proposal. Slots vary in length up to 45 minutes. Also inc...

...Graphics, desktop virtualization and virtual GPU * New storage features * High availability, live migration and fault tolerance * Emulation and TCG * Firmware: ACPI, UEFI, coreboot, U-Boot, etc. Management and infrastructure * Managing KVM: Libvirt, OpenStack, oVirt, etc. * Storage: Ceph, Gluster, SPDK, etc.r * Network Function Virtualization: DPDK, OPNFV, OVN, etc. * Provisioning =============== SUBMITTING YOUR PROPOSAL =============== Abstracts due: June 15, 2017 Please submit a short abstract (~150 words) describing your presentation proposal. Slots vary in length up to 45 minutes. Also inc...

...extend it to more device types. > > Are people looking into generic migration support? I have it on my > things-to-look-at list (figuring out what needs to be device specific > and what can be generic, figuring out how we can support vfio-ccw, > etc.). I expect to see more of it if SPDK makes progress. -- MST

...Graphics, desktop virtualization and virtual GPU * New storage features * High availability, live migration and fault tolerance * Emulation and TCG * Firmware: ACPI, UEFI, coreboot, U-Boot, etc. Management and infrastructure * Managing KVM: Libvirt, OpenStack, oVirt, etc. * Storage: Ceph, Gluster, SPDK, etc.r * Network Function Virtualization: DPDK, OPNFV, OVN, etc. * Provisioning ======================== SUBMITTING YOUR PROPOSAL ======================== Abstracts due: June 15, 2019 Please submit a short abstract (~150 words) describing your presentation proposal. Slots vary in length up to 4...

...; > 2. Add queue sub-label for disk to support multiqueue(<queue > num='4'/>) or reusing the driver label > (<driver name='vhostuser' queues='4'), which one is better? > Qemu support multiqueue like this: > -device vhost-user-scsi-pci,id=scsi0,chardev=spdk_vhost_scsi0,num_queues=4 > -device vhost-user-blk-pci,chardev=spdk_vhost_blk0,num-queues=4 > num-queues is already supported by libvirt for both <disk> and <hostdev> with <driver queues=X/>, so whether we use <disk> or <hostdev> you won't need to add any ne...

Hi Guys, And I want to add the vhost-user-scsi-pci/vhost-user-blk-pci support for libvirt. The usage in qemu like this: Vhost-SCSI -chardev socket,id=char0,path=/var/tmp/vhost.0 -device vhost-user-scsi-pci,id=scsi0,chardev=char0 Vhost-BLK -chardev socket,id=char1,path=/var/tmp/vhost.1 -device vhost-user-blk-pci,id=blk0,chardev=char1 What type should I add for libvirt. Type1: <hostdev

On Fri, 22 Jun 2018 22:05:50 +0300 "Michael S. Tsirkin" <mst at redhat.com> wrote: > On Fri, Jun 22, 2018 at 05:09:55PM +0200, Cornelia Huck wrote: > > On Thu, 21 Jun 2018 21:20:13 +0300 > > "Michael S. Tsirkin" <mst at redhat.com> wrote: > > > > > On Thu, Jun 21, 2018 at 04:59:13PM +0200, Cornelia Huck wrote: > > > >