Add ceph recovery script

ceph/ceph-recovery.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Configure Ceph to optimise recovery speed
+## Some slowdown might happens to read/write content on OSDs
+
+# Change OSDs configuration to increase recovery
+## See the documentation for more informations :
+## http://docs.ceph.com/docs/luminous/rados/configuration/osd-config-ref/#operations
+sudo ceph tell osd.* injectargs '--osd-max-backfills 4';
+sudo ceph tell osd.* injectargs '--osd-recovery-max-active 10';
+printf '%b\n' "OSDs args are setted for recovery."
+
+exit 0