ceph-common: do not calculate vm.min_free_kbytes

we preserve the default kernel value.

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

diff --git a/roles/ceph-common/tasks/misc/system_tuning.yml b/roles/ceph-common/tasks/misc/system_tuning.yml
index 874bd005941766924650817a3e10c6fe27c22d68..34976655ddd9a0a76f64313decdbbcd89658bf0b 100644 (file)
--- a/roles/ceph-common/tasks/misc/system_tuning.yml
+++ b/roles/ceph-common/tasks/misc/system_tuning.yml
@@ -16,9 +16,13 @@
   failed_when: false
   when: disable_swap
 
+- name: get default vm.min_free_kbytes
+  command: sysctl -b vm.min_free_kbytes
+  register: default_vm_min_free_kbytes
+
 - name: calculate vm.min_free_kbytes
   set_fact:
-    vm_min_free_kbytes: "{{ 4194303 if ansible_memtotal_mb >= 49152 else (ansible_memtotal_mb * 1024 / 100)|int }}"
+    vm_min_free_kbytes: "{{ 4194303 if ansible_memtotal_mb >= 49152 else default_vm_min_free_kbytes|int }}"
 
 - name: apply operating system tuning
   sysctl: