zlacker

[return to "We replaced Firecracker with QEMU"]
1. gwd+j3[view] [source] 2023-07-10 14:29:35
>>hugodu+(OP)
Listen people, Firecracker is NOT A HYPERVISOR. A hypervisor runs right on the hardware. KVM is a hypervisor. Firecracker is a process that controls KVM. If you want to call firecracker (and QEMU, when used in conjunction with KVM) a VMM ("virtual machine monitor") I won't complain. But please please please, we need a word for what KVM and Xen are, and "hypervisor" is the best fit. Stop using that word for a user-level process like Firecracker.
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2. Muffin+Qc[view] [source] 2023-07-10 15:10:45
>>gwd+j3
> virtual machine monitor

Is it good to think of libvirt as a virtual machine mointor, or is that more "virtual machine management"?

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3. zbroze+Yf[view] [source] 2023-07-10 15:24:01
>>Muffin+Qc
I'd love to get a clear explanation of what libvirt actually does. As far as I can tell it's a qemu argument assembler and launcher. For my own use-case, I just launch qemu from systemd unit files:

https://wiki.archlinux.org/title/QEMU#With_systemd_service

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4. Muffin+Ol[view] [source] 2023-07-10 15:49:40
>>zbroze+Yf
> As far as I can tell it's a qemu argument assembler

Raises a few questions to me:

Can you use KVM/do KVM stuff without QEMU?

Can you do libvirt stuff without QEMU?

Hoping the answers to both aren't useless/"technically, but why would you want to?"

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