cache: introduce mq and smq profiles

Add 2 demo profiles for mq and smq policies.
Show all support profilable params.

Use with: lvcreate --policy cache-mq ....

1 files changed, 20 insertions, 0 deletions

diff --git a/conf/cache-mq.profile b/conf/cache-mq.profile
new file mode 100644
index 000000000..3c90331d1
--- /dev/null
+++ b/conf/cache-mq.profile
@@ -0,0 +1,20 @@
+# Demo configuration 'mq' cache policy
+#
+# Note: This policy has been deprecated in favor of the smq policy
+# keyword "default" means, setting is left with kernel defaults.
+#
+
+allocation {
+	cache_pool_chunk_size = 64
+	cache_mode = "writethrough"
+	cache_policy = "mq"
+	cache_settings {
+		mq {
+			sequential_threshold = "default"	#  #nr_sequential_ios
+			random_threshold = "default"		#  #nr_random_ios
+			read_promote_adjustment = "default"
+			write_promote_adjustment = "default"
+			discard_promote_adjustment = "default"
+		}
+	}
+}