@@ 2279,6 2279,12 @@ types.}. For the ESP, if you have one and assuming it is
mkfs.fat -F32 /dev/sda1
@end example
+For the root file system, ext4 is the most widely used format. Other
+file systems, such as Btrfs, support compression, which is reported to
+nicely complement file deduplication that the daemon performs
+independently of the file system (@pxref{Invoking guix-daemon,
+deduplication}).
+
Preferably, assign file systems a label so that you can easily and
reliably refer to them in @code{file-system} declarations (@pxref{File
Systems}). This is typically done using the @code{-L} option of