CentOS - Apr 2021 - Booting from an ISO file in a XFS /boot partition

Hi,

I want to boot with a customized iPXE iso boot file from my GRUB2 menu. My
system is running CentOS-7, with /boot formated as XFS filesystem. After copying
my iPXE.iso into /boot, I have created a custom GRUB2 file in
/etc/grub.d/40_custom like this:

menuentry "iPXE" {
               set isofile="/ipxe.iso"
               loopback loop (hd0,1)$isofile
               linux16 (loop)/ipxe.lkrn
}

After regenerating grub2.cfg with "grub2-mkconfig -o /etc/grub2.cfg ,  I
have rebooted my system, I have chosen "iPXE" entry, but system
doesn't boot. I receive this error:
error: file '/ipxe.iso' not found.
Starting /ipxe.iso...
error: no server is specified.
Press any key to continue...

However, in another similar system that runs /boot in EXT4 filesystem, that ISO
file boots perfectly with the same configuration, so it seems the problem is
with XFS.

Could you help me?

Thanks.

On 08.04.21 11:16, Gesti? Servidors wrote:
> Hi,
> 
> I want to boot with a customized iPXE iso boot file from my GRUB2 menu. My
system is running CentOS-7, with /boot formated as XFS filesystem. After copying
my iPXE.iso into /boot, I have created a custom GRUB2 file in
/etc/grub.d/40_custom like this:
> 
> menuentry "iPXE" {
>                 set isofile="/ipxe.iso"
>                 loopback loop (hd0,1)$isofile
>                 linux16 (loop)/ipxe.lkrn
> }
> 
> After regenerating grub2.cfg with "grub2-mkconfig -o /etc/grub2.cfg , 
I have rebooted my system, I have chosen "iPXE" entry, but system
doesn't boot. I receive this error:
> error: file '/ipxe.iso' not found.
> Starting /ipxe.iso...
> error: no server is specified.
> Press any key to continue...
> 
> However, in another similar system that runs /boot in EXT4 filesystem, that
ISO file boots perfectly with the same configuration, so it seems the problem is
with XFS.
> 
> Could you help me?
> 
Just guessing - loading the grub module for xfs is missing?

--
Leon