From 7f95b9f98782ac966c00f1029f7cafa59593a59a Mon Sep 17 00:00:00 2001
From: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Date: Wed, 29 Nov 2017 19:08:14 +0900
Subject: [PATCH] ctr: add EnvVar `CONTAINERD_SNAPSHOTTER` for `--snapshotter`

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
---
 cmd/ctr/commands/commands.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/cmd/ctr/commands/commands.go b/cmd/ctr/commands/commands.go
index a1de37465..e1d51f9a7 100644
--- a/cmd/ctr/commands/commands.go
+++ b/cmd/ctr/commands/commands.go
@@ -14,9 +14,10 @@ var (
 	// SnapshotterFlags are cli flags specifying snapshotter names
 	SnapshotterFlags = []cli.Flag{
 		cli.StringFlag{
-			Name:  "snapshotter",
-			Usage: "snapshotter name. Empty value stands for the daemon default value.",
-			Value: containerd.DefaultSnapshotter,
+			Name:   "snapshotter",
+			Usage:  "snapshotter name. Empty value stands for the default value.",
+			Value:  containerd.DefaultSnapshotter,
+			EnvVar: "CONTAINERD_SNAPSHOTTER",
 		},
 	}