Re: NetBSD with qemu/kvm "-kernel" option

[Aleksej Saushev <asau%inbox.ru@localhost>]

Assaf Gordon <assafgordon%gmail.com@localhost> writes:

> I have NetBSD-6.1.4 guest VM running under KVM (on amd64 host).
> Works great with virtio disk and network.
>
> Now I'm trying to take it to the next level:
> Instead of using the bootloader inside the VM, I want to specify the kernel 
> directly using qemu's "-kernel" option.
>
> Generally, the usage is supposed to be this:
>     kvm  -drive file=netbsd.qcow2,media=disk,if=virtio,index=0 \
>          -kernel ./netbsd
>
> Where "./netbsd" is the NetBSD kernel ELF file (stored as a file on the host 
> machine).
> Using the generic "netbsd" kernel does not work (VM doesn't boot at all).
>
> I assume that more options are needed (e.g. "-initrd" and "-append"), and 
> perhaps also a kernel with different options.
>
> Does anyone have an idea of how to achieve this ?
> Is rebuilding a kernel image from source with special options needed ?
>
> Any help will be appreciated,

You need to build custom kernel with root file system on md(4) or NFS.


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