At the end of my bhyve and libvirt post is note that booting with grub isn’t automatic:
Needing to manually tell grub how to boot the VM is frustrating but being able to use virtio for the disk and network is good enough.
I solved this a while ago and forgot to include how. Eventually, I noticed the Debian cloud image I used as a base used extlinux to boot instead of what I expected, grub. Grub can’t boot if there’s no grub config so I installed grub2, set the configuration, and installed it on disk. The VM booted fine after that.
Later on I tried to boot a CentOS 7 cloud image.
I knew it used grub already but it wouldn’t boot when using
After several times back and forth between my Linux laptop, where I could dissect the image, and the VM host running FreeBSD, where I only had access to the serial console, I noticed the problem.
The key thing is the command may be grub-bhyve but the package name is grub2-bhyve.
The problem is easier to see with the
Usage: grub-bhyve [OPTION...] vmname
-d, --directory=DIR use GRUB files in the directory DIR
By default it checks for the grub configuration in /boot/grub.
/boot/grub so I didn’t notice.
CentOS 7 however uses
/boot/grub2 (and has
I added a
grub symlink to point to
virsh start and it booted fine too.
Summary: make sure
/boot/grub exists and has a usable
Grub does not have to be installed to the disk because that bootloader isn’t run.