From 46a9d1b78c38dfc1a294553508a6f9c69e79baf7 Mon Sep 17 00:00:00 2001 From: Nathan Fish Date: Fri, 31 May 2019 16:38:22 -0400 Subject: [PATCH] doc: Add warning that the root directory cannot be fragmented Documents: #39704 Signed-off-by: Nathan Fish --- doc/cephfs/dirfrags.rst | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/cephfs/dirfrags.rst b/doc/cephfs/dirfrags.rst index 7f42130789c..d53e0c06066 100644 --- a/doc/cephfs/dirfrags.rst +++ b/doc/cephfs/dirfrags.rst @@ -18,6 +18,8 @@ remain conservative about creating very large directories, as they still have a resource cost in situations such as a CephFS client listing the directory, where all the fragments must be loaded at once. +.. tip:: The root directory cannot be fragmented. + All directories are initially created as a single fragment. This fragment may be *split* to divide up the directory into more fragments, and these fragments may be *merged* to reduce the number of fragments in the directory. -- 2.39.5