[Bug 263118] bhyve: "Can't find /boot/entropy"

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263118

            Bug ID: 263118
           Summary: bhyve: "Can't find /boot/entropy"
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: benoitc@enki-multimedia.eu

I am trying to use an raw image (originally provided as qcow2) to install the
stormishield appliance. This works and boot perfectly wellunder KVM and seabios
but using bhyve it is stuck at the error "Can't find /boot/entropy". It also
have to be started manually. 


There is no uefi boot on this raw image:

```
 # mdconfig -a -t vnode -f /home/benoitc/utm-SNS-EVA-4.3.6-kvm.img
md0
 # file -s /dev/md0
/dev/md0: DOS/MBR boot sector; partition 1 : ID=0xa5, active, start-CHS
(0x3ff,255,63), end-CHS (0x3ff,255,63), startsector 1, 20971536 sectors
```

This is why I tried with the default loader. I have the following displayed in
the console:

```
Loading kernel...
/boot/kernel/kernel text=0x6de318 data=0x95f20+0x95a430
syms=[0x8+0xbdc18+0x8+0xbbc32]
Loading configured modules...
can't find '/boot/entropy'
Consoles: userboot

FreeBSD/amd64 User boot lua, Revision 1.2
Loading /boot/defaults/loader.conf
Loading /boot/loader.whitelist
Loading /boot/device.hints
Loading /boot/device.hints.sns
Loading /boot/loader.conf
Loading /boot/loader.conf.local
ERROR: /boot/lua/password.lua:127: attempt to call a nil value (field
'restrictInteractive').


Type '?' for a list of commands, 'help' for more detailed help.
OK ls
/
 d  .snap
 d  data
 d  boot
 d  libexec
    COPYRIGHT
 d  bin
 d  dev
 d  etc
 d  lib
 d  sbin
 d  tmp
 d  usr
 d  var
OK ls boot
boot
 d  kernel
    boot1.efi
    gptboot
    mbr
    loader.efi
    pmbr
    userboot.so
    loader
    boot
 d  lua
 d  defaults
    loader.whitelist
    device.hints
    manifest
    manifest.rcerts
    manifest.rsig
    pass_manifest
    pass_manifest.rcerts
    pass_manifest.rsig
OK boot
unknown command
OK boot
Loading kernel...
/boot/kernel/kernel text=0x6de318 data=0x95f20+0x95a430
syms=[0x8+0xbdc18+0x8+0xbbc32]
Loading configured modules...
can't find '/boot/entropy'
```


I am trying to start it using the default bhyve loader firmware using the
following configuration with vm-bhyve:

```
loader="bhyveload"
cpu=1
memory=2G
network0_type="virtio-net"
network0_switch="public"
disk0_type="virtio-blk"
disk0_name="disk0"
disk0_dev="sparse-zvol"
uuid="7aa0cad4-b4fc-11ec-898b-1402ec690a80"
network0_mac="58:9c:fc:04:33:de"
```

The vm image itself is stored on the disk as a spare zvolume instead of using
the img file.

vm-bhyve log:

```
Apr 07 14:19:33: initialising
Apr 07 14:19:33:  [loader: bhyveload]
Apr 07 14:19:33:  [cpu: 1]
Apr 07 14:19:33:  [memory: 2G]
Apr 07 14:19:33:  [hostbridge: standard]
Apr 07 14:19:33:  [com ports: com1]
Apr 07 14:19:33:  [uuid: 7aa0cad4-b4fc-11ec-898b-1402ec690a80]
Apr 07 14:19:33:  [utctime: yes]
Apr 07 14:19:33:  [debug mode: no]
Apr 07 14:19:33:  [primary disk: disk0]
Apr 07 14:19:33:  [primary disk dev: sparse-zvol]
Apr 07 14:19:33: initialising network device tap1
Apr 07 14:19:33: adding tap1 -> bridge0 (public addm)
Apr 07 14:19:33: bring up tap1 -> bridge0 (public addm)
Apr 07 14:19:33: booting
Apr 07 14:19:33: bhyveload -c /dev/nmdm-utm.1A -m 2G -e autoboot_delay=3 -d
/dev/zvol/zroot/pollen1.my.domain.tld/vm/utm/disk0 utm
Apr 07 14:19:52:  [bhyve options: -c 1 -m 2G -AHP -U
7aa0cad4-b4fc-11ec-898b-1402ec690a80 -u]
Apr 07 14:19:52:  [bhyve devices: -s 0,hostbridge -s 31,lpc -s
4:0,virtio-blk,/dev/zvol/zroot/pollen1.my.domain.tld/vm/utm/disk0 -s
5:0,virtio-net,tap1,mac=58:9c:fc:04:33:de]
Apr 07 14:19:52:  [bhyve console: -l com1,/dev/nmdm-utm.1A]
Apr 07 14:19:52: starting bhyve (run 1)
root@pollen1:~ #
```

What could I test to help to debug this issue? Let me know :)

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