Thanks to all who responded. For the record, the solution was to add
this:
disk0_type="virtio-blk"
to my /vmm/fbsd1/fbsd1.conf file.
I also added that to my /vmm/.templates/freebsd-zvol.conf.
On 16 Mar 2021, at 8:01, John Doherty via freebsd-virtualization wrote:
Hi, I am trying to get started with vm-bhyve and getting a little
stuck. I am sure there are things I don't understand here so I hope
you will bear with me.
I am using a machine with an AMD FX-8370E eight-core CPU, running
12.2-RELEASE-p4. The machine boots from a ~60GB SATA SSD which is
configured as the zroot zpool.
I have run a few bhyve vms on this machine before, including a couple
of linux variants, by just using the bhyve command directly and they
worked fine. In those cases, I just used files created with
truncate(1) for vm disks but I would like to use zvols. vm-bhyve looks
pretty nice to me and I think I'd like using it also.
I have this in /boot/loader.conf:
vmm_load="YES"
nmdm_load="YES"
if_tap_load="YES"
if_bridge_load="YES"
and this in /etc/rc.conf:
vm_enable="YES"
vm_dir="zfs:zroot/vmm"
vm_list=""
vm_delay="5"
And so I thus have this:
[root@sand] # zfs list -r zroot/vmm
NAMEUSED AVAIL REFER MOUNTPOINT
zroot/vmm 1.43G 36.8G 1.43G /vmm
and this:
[root@sand] # vm datastore list
NAMETYPEPATH ZFS DATASET
default zfs /vmm zroot/vmm
I have populated /vmm/.templates with the files from
/usr/local/share/examples/vm-bhyve but made some changes to them. For
example, the freebsd-zvol.conf template now looks like this:
loader="bhyveload"
cpu=1
memory=4096M
network0_type="virtio-net"
network0_switch="public"
disk0_dev="sparse-zvol"
disk0_name="disk0"
I've also populated /vmm/.iso with some ISO images including
FreeBSD-12.2-RELEASE-amd64-disc1.iso.
So with that, I can for example do this:
[root@sand] # vm create -t freebsd-zvol fbsd1
[root@sand] # vm list
NAME DATASTORE LOADER CPU MEMORY VNC AUTOSTART STATE
fbsd1 defaultbhyveload 14096M -No Stopped
and zfs things then look like this:
[root@sand] # zfs list -r zroot/vmm
NAMEUSED AVAIL REFER MOUNTPOINT
zroot/vmm 1.43G 36.8G 1.43G /vmm
zroot/vmm/fbsd1 164K 36.8G 108K /vmm/fbsd1
zroot/vmm/fbsd1/disk056K 36.8G56K -
So that all seems pretty good so far. Then I do this:
vm install -f fbsd1 FreeBSD-12.2-RELEASE-amd64-disc1.iso
The vm boots and I'm asked to choose a console type, I take the
default vt100, and boom -- I get the familiar FreeBSD Installer
screen. I proceed through that and try to do a Guided Root-on-ZFS
installation, but when I choose Pool Type/Disks, I'm told "No disk(s)
present to configure."
So. Pretty clearly doing something wrong here but I'm not sure what.
Happy to provide any further info that I might have neglected above.
Any advice that points me in the right direction much appreciated.
Thanks.
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