doc/man/8/mkcephfs: update --mkfs a bit

Document that 'devs' and 'osd mkfs type' must be defined.

Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/doc/man/8/mkcephfs.rst b/doc/man/8/mkcephfs.rst
index 05dee95e74673e224d1b43f977d4472d60de5f2f..054a8deae1d7273f8d9a439262b33eb2fcedd513 100644 (file)
--- a/doc/man/8/mkcephfs.rst
+++ b/doc/man/8/mkcephfs.rst
@@ -72,13 +72,10 @@ Options
 
 .. option:: --mkfs
 
-   Create and mount the any file systems specified in the
-   ceph.conf for OSD data storage using mkfs. The "devs" and (if it
-   differs from "osd data") "fs path" options must be defined.
-
-   **NOTE** Btrfs is still considered experimental.  This option
-   can ease some configuration pain, but is not required when
-   ``osd data`` directories are mounted manually by the adminstrator.
+   Create and mount the file systems specified in the ceph.conf for
+   OSD data storage using mkfs.$type. The ``devs`` option in ceph.conf
+   must specify the device(s) and the ``osd mkfs type`` option must
+   specify the file system type (normally one of btrfs, xfs, or ext4).
 
 .. option:: --no-copy-conf