Merge "Remove XFS filesystem from the daily mlocate cron job"

releasenotes/notes/swift-reconfigure-xfs-from-mlocate-e4844e6c0469afd6.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - The XFS filesystem is excluded from the daily mlocate crond job
+    in order to conserve disk IO for large IOPS bursts due to
+    updatedb/mlocate file indexing.

tasks/swift_pre_install.yml

@@ -109,3 +109,13 @@
   tags:
     - swift-dirs
     - swift-logs
+
+- name: Configure mlocate for cron.daily
+  template:
+    src: "mlocate-crond-daily.sh.j2"
+    dest: "/etc/cron.daily/mlocate"
+    mode: "0755"
+    owner: "root"
+    group: "root"
+  tags:
+    - swift-crond

templates/mlocate-crond-daily.sh.j2

@@ -0,0 +1,21 @@
+#! /bin/bash
+# {{ ansible_managed }}
+
+set -e
+
+[ -x /usr/bin/updatedb.mlocate ] || exit 0
+
+if which on_ac_power >/dev/null 2>&1; then
+    ON_BATTERY=0
+    on_ac_power >/dev/null 2>&1 || ON_BATTERY=$?
+    if [ "$ON_BATTERY" -eq 1 ]; then
+        exit 0
+    fi
+fi
+
+# See ionice(1)
+if [ -x /usr/bin/ionice ] && /usr/bin/ionice -c3 true 2>/dev/null; then
+    IONICE="/usr/bin/ionice -c3"
+fi
+
+flock --nonblock /run/mlocate.daily.lock $IONICE /usr/bin/updatedb.mlocate --prunefs xfs