> Some data from tunefs -l: > Filesystem revision #: 1 (dynamic) > Filesystem features: filetype sparse_super > Filesystem OS type: GNU > > The Hurd's ext2fs server has no problems with this filesystem.
This is true, however if you are choosing features then omit filetype from your -O list. The Hurd and Linux are mutually robust in use of the filetype feature, but the Hurd will write only 0 (i.e. "unknown") filetype fields and e2fsck will blather about fixing them all (both Hurd and Linux behave just fine with either 0 or nonzero values for the field).