From d2295d58b2f6bc9619c1c9d1605f7d959a672922 Mon Sep 17 00:00:00 2001
From: Alvin Deng <alvin.q.deng@utexas.edu>
Date: Wed, 19 Apr 2017 16:35:04 -0500
Subject: [PATCH] Add examples of storage-opts and log-opts for the daemon

Signed-off-by: Alvin Deng <alvin.q.deng@utexas.edu>
---
 docs/reference/commandline/dockerd.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/docs/reference/commandline/dockerd.md b/docs/reference/commandline/dockerd.md
index c9fceba7b3..b523a1aaa8 100644
--- a/docs/reference/commandline/dockerd.md
+++ b/docs/reference/commandline/dockerd.md
@@ -302,6 +302,24 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
 
 #### Devicemapper options
 
+This is an example of the configuration file for devicemapper on Linux:
+
+```json
+{
+  "storage-driver": "devicemapper",
+  "storage-opts": [
+    "dm.thinpooldev=/dev/mapper/thin-pool",
+    "dm.use_deferred_deletion=true",
+    "dm.use_deferred_removal=true"
+  ],
+  "log-driver": "json-file",
+  "log-opts": {
+    "max-size": "10m",
+    "max-file": "10"
+  }
+}
+```
+
 ##### `dm.thinpooldev`
 
 Specifies a custom block storage device to use for the thin pool.