Windows 7 vm lost network connection under heavy network load
Hi folks, Happy holidays. I'm having an urgent problem :smile: . I've installed oVirt 4.4.2 on CentOS 8.2 and then created several Windows 7 vms for stress testing. I found that the heavy network load would lead to the e1000 net card NOT able to receive packets, it seemed totally blocked. In the meantime, packet sending was fine. Only re-enabling the net card can restore the network. Has anyone also had this problem? Looking forward to your insights. Much appreciated. Best regards, Joey
Are you using E1000 on the VMs or on the Host ? If it's the second , you should change the hardware . I have never used e1000 for VMs as it is an old tech. Better to install the virtio drivers and then use the virtio type of NIC. Best Regards, Strahil Nikolov В четвъртък, 31 декември 2020 г., 04:06:50 Гринуич+2, Joey Ma <majunjiev@gmail.com> написа: Hi folks, Happy holidays. I'm having an urgent problem :smile: . I've installed oVirt 4.4.2 on CentOS 8.2 and then created several Windows 7 vms for stress testing. I found that the heavy network load would lead to the e1000 net card NOT able to receive packets, it seemed totally blocked. In the meantime, packet sending was fine. Only re-enabling the net card can restore the network. Has anyone also had this problem? Looking forward to your insights. Much appreciated. Best regards, Joey _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FALLTVEFQ2FDWJ...
On Thu, Dec 31, 2020 at 8:04 AM Strahil Nikolov via Users <users@ovirt.org> wrote:
Are you using E1000 on the VMs or on the Host ? If it's the second , you should change the hardware .
I have never used e1000 for VMs as it is an old tech. Better to install the virtio drivers and then use the virtio type of NIC.
Best Regards, Strahil Nikolov
[snip]
Hi folks,
Happy holidays.
I'm having an urgent problem :smile: .
I've installed oVirt 4.4.2 on CentOS 8.2 and then created several Windows 7 vms for stress testing. I found that the heavy network load would lead to the e1000 net card NOT able to receive packets, it seemed totally blocked. In the meantime, packet sending was fine.
Only re-enabling the net card can restore the network. Has anyone also had this problem? Looking forward to your insights. Much appreciated.
Best regards, Joey
You should follow what described here that seems somehow updated because the previously "oVirt Guest Tools" iso is no longer referred there. https://www.ovirt.org/documentation/virtual_machine_management_guide/#chap-I... In practice you have to install the virtio-win rpm package on your engine (now at 1.9.14.4 version) and then upload the file /usr/share/virtio-win/virtio-win.iso (actually a link to the exact release version file) as a disk to a storage domain Then you can attach the iso to the VM and inside the iso you will find under the NetKVM directory some subdirs for the different os versions and w7 (with both x86 and amd64 subdirs) is still there. To use drivers for paravirtualized network devices you have to choose VirtIO as the type of the network interface in web admin gui for the VM and probably reconfigure it inside the OS because it will be detected as a new one and will lose previous configuration. You can also use (at install time or later) paravirtualized drivers for disks. HIH, Gianluca
Hi Strahil and Gianluca, Thank you guys so much for getting back to me. I was using e1000 for VMs, not physical servers. Much appreciated for your suggestions and I've turned to virtio and would redo the stress testing. Hope everything works fine. 😀 Happy new year. Regards, Joey On Thu, Dec 31, 2020 at 9:32 PM Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
On Thu, Dec 31, 2020 at 8:04 AM Strahil Nikolov via Users <users@ovirt.org> wrote:
Are you using E1000 on the VMs or on the Host ? If it's the second , you should change the hardware .
I have never used e1000 for VMs as it is an old tech. Better to install the virtio drivers and then use the virtio type of NIC.
Best Regards, Strahil Nikolov
[snip]
Hi folks,
Happy holidays.
I'm having an urgent problem :smile: .
I've installed oVirt 4.4.2 on CentOS 8.2 and then created several Windows 7 vms for stress testing. I found that the heavy network load would lead to the e1000 net card NOT able to receive packets, it seemed totally blocked. In the meantime, packet sending was fine.
Only re-enabling the net card can restore the network. Has anyone also had this problem? Looking forward to your insights. Much appreciated.
Best regards, Joey
You should follow what described here that seems somehow updated because the previously "oVirt Guest Tools" iso is no longer referred there.
https://www.ovirt.org/documentation/virtual_machine_management_guide/#chap-I...
In practice you have to install the virtio-win rpm package on your engine (now at 1.9.14.4 version) and then upload the file /usr/share/virtio-win/virtio-win.iso (actually a link to the exact release version file) as a disk to a storage domain
Then you can attach the iso to the VM and inside the iso you will find under the NetKVM directory some subdirs for the different os versions and w7 (with both x86 and amd64 subdirs) is still there. To use drivers for paravirtualized network devices you have to choose VirtIO as the type of the network interface in web admin gui for the VM and probably reconfigure it inside the OS because it will be detected as a new one and will lose previous configuration. You can also use (at install time or later) paravirtualized drivers for disks.
HIH, Gianluca
participants (3)
-
Gianluca Cecchi -
Joey Ma -
Strahil Nikolov