doc: change the osd_max_backfills default to 1

  Fixes: http://tracker.ceph.com/issues/17701
  Signed-off-by: huangjun <hjwsm1989@gmail.com>
(cherry picked from commit e112664bf3b8a908fbcd33e3bd4b57da00b008d3)

diff --git a/doc/rados/configuration/osd-config-ref.rst b/doc/rados/configuration/osd-config-ref.rst
index 68b140f6aac99114df8cee71281ca6bf53caa0f6..ff2cf8ab615edb5fa6f6206067b3fcfedd203618 100644 (file)
--- a/doc/rados/configuration/osd-config-ref.rst
+++ b/doc/rados/configuration/osd-config-ref.rst
@@ -486,7 +486,7 @@ priority than requests to read or write data.
 
 :Description: The maximum number of backfills allowed to or from a single OSD.
 :Type: 64-bit Unsigned Integer
-:Default: ``10``
+:Default: ``1``
 
 
 ``osd backfill scan min``