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@tpankrath:matrix.orgTobias Pankrath I just tried to build an azure images on an azure vm, but a 'x86_64-linux' with features {kvm} is required to build '/nix/store/8pb7ph0p7j1mhwsiz9mfmp92ps6nvx24-azure-image.drv', but I am a 'x86_64-linux' with features {benchmark, big-parallel, nixos-test, uid-range}. Is there a way to circumvent this? 12:10:43
@tpankrath:matrix.orgTobias Pankrath azureuser@vet-tst-vm:~/$ sudo /usr/sbin/kvm-ok INFO: Your CPU does not support KVM extensions KVM acceleration can NOT be used that explains is. 12:20:52
@tpankrath:matrix.orgTobias Pankrath * azureuser@vet-tst-vm:~/$ sudo /usr/sbin/kvm-ok INFO: Your CPU does not support KVM extensions KVM acceleration can NOT be used that explains it. 12:20:59
@tpankrath:matrix.orgTobias PankrathIf anyone knows how to build images on azure, please let me know. I only found some info about instance types that support kvm (DC.*), but they don't seem to be available anymore. 12:35:33
@j4:matrix.orgj4m3s

Well, I'm not familiar with azure VMs supporting kvm virtualization. If your does however, you also need to configure your nix machine to accept build by adding this to settings :

nix.settings.system-features = ["kvm"];

With a quick googling (I don't have access to an azure account), seems like Ev3 / Dv3 support it. You need to look for "nested virtualization" (see https://stackoverflow.com/questions/49099428/is-it-possible-to-run-kvm-on-azure https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/nested-virtualization
https://learn.microsoft.com/en-us/azure/virtual-machines/ev3-esv3-series https://learn.microsoft.com/en-us/azure/virtual-machines/dv3-dsv3-series)

12:45:42
@tpankrath:matrix.orgTobias Pankrath
In reply to @j4:matrix.org

Well, I'm not familiar with azure VMs supporting kvm virtualization. If your does however, you also need to configure your nix machine to accept build by adding this to settings :

nix.settings.system-features = ["kvm"];

With a quick googling (I don't have access to an azure account), seems like Ev3 / Dv3 support it. You need to look for "nested virtualization" (see https://stackoverflow.com/questions/49099428/is-it-possible-to-run-kvm-on-azure https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/nested-virtualization
https://learn.microsoft.com/en-us/azure/virtual-machines/ev3-esv3-series https://learn.microsoft.com/en-us/azure/virtual-machines/dv3-dsv3-series)

Thanks. The output from kvm-ok was from a Dv3, so it seems kvm does not work even on machines that support nested virt.
15:23:02
@j4:matrix.orgj4m3s Mmmmm, maybe it's because it's an azure thing and they only support hyperv ? :/ Not my area of expertise unfortunately Tobias Pankrath 15:24:18
@tpankrath:matrix.orgTobias PankrathI'll try that again tomorrow. At least according to SO it should be possible.15:27:48
@j4:matrix.orgj4m3sPlease post the solution, I'm also curious about the solution :)15:28:23
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