IRC, freenode, #hurd, 2012-04-20
<Tekk_> what are the extensions to ext2? <Tekk_> that hurd uses <braunr> tha ability to store passive translator command lines in the inodes <braunr> the* <antrik> well, also a fourth set of permission bits, and an "author" field <braunr> right <antrik> both very obscure features that better never existed...
The fourth set of permission bits is for unknown users.
In order to take advantage of these features, the owner/creator of the
partition must be set to hurd.
mke2fs, unless specifically overridden on
the command line (
-o hurd, for example), will set the default to whatever
system it is running on. At least the root filesystem must be of hurd type,
as it has to store various passive translator settings. Even if a file system
is not of the native type, others may still use it; they just may not be able
to use certain extensions.