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Hi Ashish, IMO, it is yes, no way to increase tx_queue_size for direct type interface ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Thu, Oct 26, 2017 at 3:38 PM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Yalan, > > In the previous email you mentioned "tx_queue_size='512' will not work in > the guest with direct type interface, in fact, no matter what you set, it...

...6='off' ecn='off' ufo='off' mrg_rxbuf='off'/> <guest csum='off' tso4='off' tso6='off' ecn='off' ufo='off'/> </driver> Best Regards, Ashish Kurian On Thu, Oct 26, 2017 at 10:01 AM, Yalan Zhang <yalzhang@redhat.com> wrote: > Hi Ashish, > > IMO, it is yes, no way to increase tx_queue_size for direct type interface > > > > > > > ------- > Best Regards, > Yalan Zhang > IRC: yalzhang > Internal phone: 8389413 > > On Thu, Oct 26, 2017 at 3:38 PM, Ashis...

...shishbnv@gmail.com> wrote: > Hi Yalan, > > Thank you for your comment on qemu-kvm-rhev > > I am waiting for a response about my previous email with the logs > attached. I do not understand what is the problem. > > > On Oct 26, 2017 8:58 AM, "Yalan Zhang" <yalzhang@redhat.com> wrote: > > Hi Ashish, > > Please never mind for qemu-kvm-rhev. > qemu with the code base 2.10.0 will support the tx_queue_size and > rx_queue_size. > > Thank you~ > > > > > > ------- > Best Regards, > Yalan Zhang > IRC: yalzhang >...

...1 ==> no multiqueue Current hardware settings: RX: 0 TX: 0 Other: 0 Combined: 1 # ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: *512* RX Mini: 0 RX Jumbo: 0 TX: 256 Current hardware settings: RX: *512* RX Mini: 0 RX Jumbo: 0 TX: 256 ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Thu, Oct 26, 2017 at 2:33 AM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Michal, > > An update to what I have already said : when I try adding <driver > name='qemu' txmode='iothread' ioeventfd='on' event_idx='off'...

...nt domain failed to validate content Failed. Try again? [y,n,i,f,?]: ----> press 'i' error: XML error: invalid mac address check value: 'next'. Valid values are "generated" and "static". Failed. Try again? [y,n,f,?]: ------- Best Regards, Yalan Zhang IRC: yalzhang

...succeed. # virsh destroy rhel7.2; virsh start rhel7.2 ;sleep 10; virsh detach-interface rhel7.2 network 52:54:00:98:c4:a0; sleep 2; virsh dumpxml rhel7.2 |grep /interface -B9 Domain rhel7.2 destroyed Domain rhel7.2 started Interface detached successfully ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413

Given the following network configuration: =========== <network> <name>osc_mgmt</name> <uuid>d93fe709-14ae-4a0e-8989-aeaa8c76c513</uuid> <forward mode='route'/> <bridge name='osc_mgmt' stp='on' delay='0'/> <mac address='52:54:00:3f:fe:10'/> <ip address='192.168.80.254'

...stsfile 52:54:00:2c:85:92,192.168.80.1,openstack-controller-00 But it makes me wonder...libvirt should be generating and managing this file right? Do I need to edit this myself or should libvirt be updating this file? If so then why isn't it? On Mon, Oct 30, 2017 at 5:21 AM, Yalan Zhang <yalzhang@redhat.com> wrote: > Please check the dnsmasq hostsfile, should have all the records there: > > # cat /var/lib/libvirt/dnsmasq/osc_mgmt.hostsfile > 52:54:00:2c:85:92,192.168.80.1,openstack-controller-00 > 52:54:00:e2:4b:25,192.168.80.2,openstack-database-00 > 52:54:00:50:91:04...

...terref> > <alias name='net0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </interface> > > > > ------- > Best Regards, > Yalan Zhang > IRC: yalzhang

...host? Is it also a possibility that I change the rx and tx buffer on the physical interface on the host and it is reflected automatically inside the VM as you said it will always receive the default value of the host? Best Regards, Ashish Kurian On Thu, Oct 26, 2017 at 6:45 AM, Yalan Zhang <yalzhang@redhat.com> wrote: > Hi Ashish, > > I have tested with your xml in the first mail, and it works for rx_queue_size(see > below). > multiqueue need to work with vhost backend driver. And when you set > "queues=1" it will ignored. > > Please check your qemu-kvm-rh...

Hello, I'm recently stumbled over the libvirt network filter capabilities and got pretty excited. Unfortunately I'm not able to get the the "clean-traffic" filterset working. I'm using a freshly installed Debian Stretch with libvirt, qemu and KVM. My config snippet looks as follows: sudo virsh edit <VM> [...] <interface type='bridge'> <mac

...d one vnet0 tun unmanaged -- ----> the ethernet one ... 7. from the outputs above, the back-end tun device for ethernet type interface is unmanaged. I don't know how to update the script to fix it. Could you please help? ------- Best Regards, Yalan Zhang IRC: yalzhang

Hi there, I have a question regarding direct type interfaces. Would someone be able to take a look at it? When I start 2 VMs on the same host with interface "direct type + bridge mode", just as below: <interface type="direct"> <mac address="52:54:00:9e:7b:51"/> <source dev="eno1" mode="bridge"/> <model

...39;/> </source> </hostdev> # virsh attach-device rhel hostdev.xml error: Failed to attach device from hostdev.xml error: internal error: unable to execute QEMU command 'device_add': vfio error: 0000:07:00.0: group 2 is not viable ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413

...host bridge (created outside libvirt in the host system network config) that is attached to the PF (or alternately one of the VFs that isn't being used for VMs, or to another physical ethernet adapter on the host that is connected to the same network. ------- Best Regards, Yalan Zhang IRC: yalzhang On Sun, Mar 22, 2020 at 6:50 AM Laine Stump <laine@redhat.com> wrote: > On 3/21/20 1:08 AM, Yalan Zhang wrote: > > > In my understanding, the standby and primary hostdev interface may be in > > different subnet. > > There is only one hostdev device in the team pair...

...erface will get ip as 192.168.122.x, but after NAT, it will be in the same subnet of the vf. So after the VF is unplugged, the packet will still broadcast in the same subnet, and the vm will get the packet as the standby share the same mac. Right? Thank you! ------- Best Regards, Yalan Zhang IRC: yalzhang

...00:00:01.4: Adding to iommu group 3 ... [ 7.866463] pci 0000:e0:00.2: Found IOMMU cap 0x40 [ 7.920222] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank). [ 7.927428] perf/amd_iommu: Detected AMD IOMMU #1 (2 banks, 4 counters/bank) ... ------- Best Regards, Yalan Zhang IRC: yalzhang

...2c:85:92,192.168.80.1,openstack-controller-00 52:54:00:e2:4b:25,192.168.80.2,openstack-database-00 52:54:00:50:91:04,192.168.80.3,openstack-keystone-00 52:54:00:fe:5b:36,192.168.80.7,openstack-rabbitmq-00 52:54:00:95:ca:bd,192.168.80.5,openstack-glance-00 ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Mon, Oct 30, 2017 at 8:26 AM, Dagmawi Biru <admin@dbvoid.com> wrote: > Given the following network configuration: > =========== > <network> > <name>osc_mgmt</name> > <uuid>d93fe709-14ae-4a0e-8989-aeaa8c76c513</uuid>...

...(or alternately one of the VFs that isn't being used > > for VMs, or to another physical ethernet adapter on the host that is > > connected to the same network. > > > > > > > > > > ------- > > Best Regards, > > Yalan Zhang > > IRC: yalzhang > > > > > > On Sun, Mar 22, 2020 at 6:50 AM Laine Stump <laine@redhat.com > > <mailto:laine@redhat.com>> wrote: > > > > On 3/21/20 1:08 AM, Yalan Zhang wrote: > > > > > In my understanding, the standby and primary hostdev i...

Hello everyone, I would like to ask a question regarding to disable UFO of virtio vNIC in my guest. I have read the document at https://libvirt.org/formatdomain.html *host* The csum, gso, tso4, tso6, ecn and ufo attributes with possible values on and off can be used to turn off host offloading options. By default, the supported offloads are enabled by QEMU. *Since 1.2.9 (QEMU only)* The