On Sun, Nov 19, 2023 at 09:16:20PM +0100, Martin Steigerwald wrote: > Hi! > > On recovering from some crazy filesystem corruption, probably related to > "thou shalt not resume from this hibernation image" (posts on linux-btrfs > mailing list, I can share link if curious), gladly no loss of important > data involved, I recreated XFS based /boot with > > xfsprogs-6.5.0 (12 Oct 2023) > […] > mkfs: enable reverse mapping by default (Darrick J. Wong) > mkfs: enable large extent counts by default (Darrick J. Wong) > > After that GRUB started being funny on me: > > update-grub => grub-mkconfig and grub-install both told me: > > unknown filesystem > > grub-probe revealed that grub did not like to recognize new XFS based > /boot filesystem. So /boot is Ext4 now. I don't really care. > > This is with grub 2.12~rc1-12 on Devuan Ceres. > > I read on internet that similar funny stuff happened as Ext4 gained > features. Could this be the case here as well? Yes this is due to enabling the large extent counts (nrext64) feature. > Is this a known issue? I bet it needs a bug report to the GRUB developers? See: https://lore.kernel.org/grub-devel/20231026095339.31802-1-ailiop@xxxxxxxx/ Regards, Anthony