Chainloading does not work on mirrored EFI partitions (w/mdadm)

Jan · August 22, 2024, 1:15pm

Just saw the following comment:

theforeman/foreman/blob/aa2a03c106af65a2ad139641d2875559a2dc45c7/app/views/unattended/provisioning_templates/snippet/pxegrub2_chainload.erb#L58


      
          echo "as provided below. If you're using an older grub2 version or"
          echo "the "connectefi" option isn't recognized by your grub2, grub2 will print a error"
          echo "like 'can't find command connectefi' but the boot process will continue."
          echo "For hosts, you can omit this by adding a (global) parameter to 'grub2-connectefi=false'."
          echo "For the default GRUB2 script, you can omit this by setting the"
          echo "default_connectefi_option below to 'false'."
          echo "Valid values of 'grub2-connectefi' parameter: false, scsi, pciroot"
          echo
          echo "Virtual or physical hosts using Software RAID for the ESP partition may try"
          echo "booting on the Software RAID, which will fail. To workaround, upgrade to the"
          echo "latest grub2 (*) and add "--efidisk-only" argument to the "search" command in"
          echo "the grub2_chainload template."
          echo
          echo "(*) grub2-efi-x64-2.02-122.el8 (upstream doesn't have the patches yet)"
          echo
          <%=
            default_connectefi_option = 'scsi'
            connectefi_option = @host ? host_param('grub2-connectefi', default_connectefi_option) : default_connectefi_option
            connectefi_option = nil if connectefi_option == 'false'
            "connectefi #{connectefi_option}" if connectefi_option
          %>

Have you tried to add --efidisk-only option to search?