Demi Marie Obenour writes: > Unless extended attributes are disabled (with -x-1), mkfs.erofs > fails when the source is a BTRFS filesystem. This prevents the > Spectrum image from being built. Using -x-1 seems to produce a > working installer, though I only smoke tested it (by trying the > example VMs). That's odd — I frequently run mkfs.erofs on btrfs. Could it be some difference in our filesystem/mount options? Could it just be that my files don't have extended attributes and yours do (SELinux)?