At my tests about the grub install bug i found another that is there since core173.
The install on xfs filesystem fails because xfsprogs refuse to create filesystems smaller than 300MB.
https://bugzilla.ipfire.org/show_bug.cgi?id=13077
there are three possible solutions: 1. add "-unsupported" flag to ignore this limit (not sure if this a good idea because we had strange out of space reports in the past also if no additional filles are installed.)
2. enlarge boot partition
3. switch boot partition to ext4
Which is the best solution?
Arne