From: Nathan Fish Date: Fri, 31 May 2019 20:38:22 +0000 (-0400) Subject: doc: Add warning that the root directory cannot be fragmented X-Git-Tag: v15.1.0~2592^2 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F28354%2Fhead;p=ceph.git doc: Add warning that the root directory cannot be fragmented Documents: #39704 Signed-off-by: Nathan Fish --- diff --git a/doc/cephfs/dirfrags.rst b/doc/cephfs/dirfrags.rst index 7f42130789c5..d53e0c060667 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.