Follow-up Comment #1, bug #57652 (project grub):
Adding a reproducer script.
This does the following:
* create a filesystem image file sized 1GB
* create a partition on the image and an ext3 file system in it
* mount the partition
* debootstrap debian stable into the mountpoint
* install grub2 into the debian image (from package, here you could install
your self-built grub2...)
* check for the number of free inodes
* create as many dummy files to exactly hit a bad magic number
* unmount / mount to update the superblock
* chroot => grub-install
grub-install will fail.
it is called as root:
# bash ./grub-bug-57652-reproduce.sh /space/grub.img /mnt
/space should have 1GB of free space of course :-)
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