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Ubuntu ZFS - /boot/efi/grub mounted at /boot/grub in fstab - normal?

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I'm noticing a "new" line in fstab I've never noticed before, and I'm wondering if it has to do with this installation being on ZFS

AFAICR /boot/grub has always existed independent of the efi partition, but in the case of this new installation, it lives on /dev/nvme0n1p1 (the efi partition) in /grub and then is bind mounted to /boot/grub

Here's the exact line in /etc/fstab:

UUID=B045-5C3B  /boot/efi       vfat    umask=0022,fmask=0022,dmask=0022      0       1
/boot/efi/grub  /boot/grub  none    defaults,bind   0   0

(efi mountpoint added for context)

Questions:

Is this normal behavior, and I just haven't noticed it before?

If this is not typical of "regular" Ubuntu installations, is there some reason Ubuntu on ZFS needs grub.cfg (et. al.) to be available in the efi partition during startup?

Thanks

mangohost

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