diff --git a/.gitignore b/.gitignore
index 547e183..41fd8ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 /Godeps/_workspace
 vendor
 vendor.*
+.idea
\ No newline at end of file
diff --git a/cmd/s3driver/Dockerfile b/cmd/s3driver/Dockerfile
index ec9e2ea..bf261b6 100644
--- a/cmd/s3driver/Dockerfile
+++ b/cmd/s3driver/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.16-alpine as gobuild
+FROM golang:1.16-alpine AS gobuild
 
 WORKDIR /build
 ADD . /build
diff --git a/cmd/s3driver/Dockerfile.full b/cmd/s3driver/Dockerfile.full
index 7dae6ab..21a2575 100644
--- a/cmd/s3driver/Dockerfile.full
+++ b/cmd/s3driver/Dockerfile.full
@@ -1,4 +1,4 @@
-FROM golang:1.16-alpine as gobuild
+FROM golang:1.16-alpine AS gobuild
 
 WORKDIR /build
 ADD . /build
@@ -6,7 +6,7 @@ ADD . /build
 RUN go get -d -v ./...
 RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o ./s3driver ./cmd/s3driver
 
-FROM debian:buster-slim as s3backer
+FROM debian:buster-slim AS s3backer
 ARG S3BACKER_VERSION=1.5.0
 
 RUN apt-get update && apt-get install -y \
diff --git a/pkg/driver/controllerserver.go b/pkg/driver/controllerserver.go
index 1a2d8ac..ad2a860 100644
--- a/pkg/driver/controllerserver.go
+++ b/pkg/driver/controllerserver.go
@@ -265,7 +265,7 @@ func sanitizeVolumeID(volumeID string) string {
 func volumeIDToBucketPrefix(volumeID string) (string, string) {
 	// if the volumeID has a slash in it, this volume is
 	// stored under a certain prefix within the bucket.
-	splitVolumeID := strings.Split(volumeID, "/")
+	splitVolumeID := strings.SplitN(volumeID, "/", 2)
 	if len(splitVolumeID) > 1 {
 		return splitVolumeID[0], splitVolumeID[1]
 	}
diff --git a/pkg/mounter/mounter.go b/pkg/mounter/mounter.go
index d441fe1..f2bc943 100644
--- a/pkg/mounter/mounter.go
+++ b/pkg/mounter/mounter.go
@@ -68,7 +68,7 @@ func fuseMount(path string, command string, args []string) error {
 	cmd.Stderr = os.Stderr
 
 	if err := cmd.Run(); err != nil {
-		return fmt.Errorf("Error fuseMount command: %s\nargs: %s\noutput", command, args)
+		return fmt.Errorf("Error fuseMount command: %s\nargs: %s\noutput err %v", command, args, err)
 	}
 
 	return waitForMount(path, 10*time.Second)