[bug #64475] grub failed to initrd /boot/amd-ucode.img in btrfs partition with bees

Follow-up Comment #5, bug #64475 (project grub):

Hello, I used 
"qemu-img create -f raw example.img 200M"
to created a 200Mb image file, and 
"losetup /dev/loop0 example.img", 
mounting example.img as a loop device.

Then I formatted the /dev/loop0 by mkfs.btrfs with default options,

"mount /dev/loop0 /boot",
mounting the loop0 device to /boot,
copied the amd-ucode.img file to /boot/amd-ucode_src.img, and I noticed that I
had enabled the zstd compression for my root partition, so I ran 
"btrfs filesystem defragment -r -v -czstd /boot/"
to compress the amd-ucode_src.img file.

After that, started the beesd service for loop0, install the amd-ucode package
by package manager, then I confirmed  the bees deduplicated the
amd-ucode.img.

umount the /boot and "losetup -d /dev/loop0",
I compressed the example.img file with zstd.
I am not sure this image could cause the grub boot failed, just control the
variables as same as possible.
Thanks!

(file #54989)

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Additional Item Attachment:

File name: example.img.zst                Size:61 KB
    <https://file.savannah.gnu.org/file/example.img.zst?file_id=54989>



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