DEV HELP: Booting Truenas from custom ipxe issue

[lp35]

Hi,

I'm trying to make a POC of booting Truenas SCALE from netbootxyz.

I have forked the netboot.xyz-custom and I can't make the liveCD to boot. The kernel boot but I have a VFS error that the filesystem can't be loaded from (0,0).

This is the content of the ISO file:

dr-xr-xr-x. 1 test  test     5  8 juil. 19:35 boot
dr-xr-xr-x. 1 test  test     3  8 juil. 19:34 .disk
dr-xr-xr-x. 1 test  test     3  8 juil. 19:35 EFI
-r--r--r--. 1 test  test  2,9M  8 juil. 19:35 efi.img
-r--r--r--. 1 test  test   37M  8 juil. 19:34 initrd.img
dr-xr-xr-x. 1 test  test     3  8 juil. 19:34 live
-r--r--r--. 1 test  test     0  8 juil. 19:35 mach_kernel
dr-xr-xr-x. 1 test  test     3  8 juil. 19:35 System
-r--r--r--. 1 test  test  1,3G  8 juil. 19:34 TrueNAS-SCALE.update
-r--r--r--. 1 test  test  8,9M  8 juil. 19:34 vmlinuz

Notice that there is a big file, TrueNAS-SCALE.update that I will surely need to make available to the boot env at some point, and I have no clue on how to do it.

FYI, this is the content of the grub file I've found in Truenas installation media /boot/grub:

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

set prefix=($root)/boot/grub
if loadfont $prefix/fonts/unicode.pf2 ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  insmod serial
  set locale_dir=$prefix/locale
  set lang=en_US
  set gfxpayload=keep
fi

if [ "$grub_platform" = xen ]; then
  set serial_console=""
  set gfx_console="console=hvc0"
else
  set serial_console="console=ttyS0,115200n8"
  set gfx_console="console=tty0"
  set default="serial"
  serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
  if terminal_output gfxterm; then
    set default="video"
    terminal_output --append serial
    terminal_input --append serial
  elif [ "$grub_platform" = pc ]; then
    # PC console generally outputs to only the video console
    terminal_input console serial
    terminal_output console serial
  elif [ "$grub_platform" = efi ]; then
    # EFI console generally outputs to both the video console and serial port
    terminal_input console
    terminal_output console
  fi
fi

# With serial input enabled, sleep helps consume buffered input
# grub.cfg generated by grub-install also includes the sleep for this purpose.
sleep -i 1

set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue

if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$feature_timeout_style = xy ] ; then
#    set timeout_style=hidden
    set timeout=15
  # Fallback hidden-timeout code in case the timeout_style feature is
  # unavailable.
  elif sleep --interruptible 0 ; then
    set timeout=15
  fi
fi

insmod play
play 960 440 1 0 4 440 1
menuentry --hotkey=i --id=video 'Start TrueNAS SCALE Installation' {
    load_video
    set background_color=black
    linux    /vmlinuz gfxpayload=text quiet nomodeset boot=live toram=filesystem.squashfs $gfx_console
    initrd   /initrd.img
}
menuentry --hotkey=j --id=serial 'Start TrueNAS SCALE Installation (115200 baud)' {
    load_video
    set background_color=black
    linux    /vmlinuz gfxpayload=text quiet nomodeset boot=live toram=filesystem.squashfs $gfx_console $serial_console
    initrd   /initrd.img
}

Content of my ipxe (a bit dirty).

#!ipxe
###
### netboot.xyz-custom menu example
###

:custom
clear custom_choice
menu This is a Test Menu
item --gap This is the first sub menu
item option_one ${space} Loading a kernel and initrd
item option_two ${space} Loading an ISO
item --gap This is a second sub menu
item option_three ${space} Loads another custom sub menu
item option_four ${space} This is option four
choose custom_choice || goto custom_exit
echo ${cls}
goto ${custom_choice}
goto custom_exit

:option_one
kernel http://netbootxyz.DOMAIN.org/vmlinuz ip=dhcp boot=casper netboot=url toram initrd=initrd.img url=http://netbootxyz.DOMAIN.org/live/filesystem.squashfs
initrd http://netbootxyz.DOMAIN.org/initrd.img
boot || goto custom_exit

:custom_exit
chain utils.ipxe
exit

Any clue on how to boot the thing?