Reserve some memory

Signed-off-by: Sébastien Han <seb@redhat.com>

diff --git a/roles/ceph-common/defaults/main.yml b/roles/ceph-common/defaults/main.yml
index f58e88e304b7139a019d339d8a28267d2e1ae404..cf076897eb99b552671cbbe13ba26a9839228e08 100644 (file)
--- a/roles/ceph-common/defaults/main.yml
+++ b/roles/ceph-common/defaults/main.yml
@@ -235,6 +235,7 @@ os_tuning_params:
   - { name: fs.file-max, value: 26234859 }\r
   - { name: vm.zone_reclaim_mode, value: 0 }\r
   - { name: vm.vfs_cache_pressure, value: 50 }\r
+  - { name: vm.min_free_kbytes, value: 4294967296 }\r
 \r
 \r
 ##########\r