Update doc/rados/configuration/filesystem-recommendations.rst

Clarified when it's necessary to use the setting:

filestore xattr use omap = true

diff --git a/doc/rados/configuration/filesystem-recommendations.rst b/doc/rados/configuration/filesystem-recommendations.rst
index 17908cc3d19a19d44262e8b70a19fbae260c50ed..cb1aca875eda90c754291a556bec7f2f785fd2f7 100644 (file)
--- a/doc/rados/configuration/filesystem-recommendations.rst
+++ b/doc/rados/configuration/filesystem-recommendations.rst
@@ -41,8 +41,11 @@ The underlying file system must provide sufficient capacity for
 XATTRs.  ``btrfs`` does not bound the total xattr metadata stored with
 a file.  ``XFS`` has a relatively large limit (64 KB) that most
 deployments won't encounter, but the ``ext4`` is too small to be
-usable.  To use these file systems, you should add the following like
-to the ``[osd]`` section of your ``ceph.conf`` file.::
+usable.
+
+You should always add the following line to the ``[osd]`` section of your
+``ceph.conf`` file for ``ext4`` filesystems; you can optionally use
+it for ``btrfs`` and ``XFS``.::
 
        filestore xattr use omap = true