doc: document hostname constraints for rados bench

Fixes: http://tracker.ceph.com/issues/17526
Signed-off-by: Loic Dachary <loic@dachary.org>

diff --git a/doc/man/8/rados.rst b/doc/man/8/rados.rst
index 2243a5e79004e969dcd7fa87522589472c860bfd..53af26926dc5922884e7a7f151b3228e1a97f75a 100644 (file)
--- a/doc/man/8/rados.rst
+++ b/doc/man/8/rados.rst
@@ -122,6 +122,8 @@ Pool specific commands
   default, and is used as the underlying object name for "read" and
   "write" ops.
   Note: -b *objsize* option is valid only in *write* mode.
+  Note: *write* and *seq* must be run on the same host otherwise the
+  objects created by *write* will have names that will fail *seq*.
 
 :command:`cleanup`