// reads are running.
type syncReadCloser struct {
	rc io.ReadCloser
	mu sync.Mutex
}

func (pr *syncReadCloser) Read(p []byte) (n int, err error) {
	// This ensures that Close will block until Read has completed.
	// This allows another goroutine to close the reader.
	pr.mu.Lock()
	defer pr.mu.Unlock()
	if pr.rc == nil {
		return 0, io.EOF
	}
	return pr.rc.Read(p)
}

./mc ls -r myminio/versioned/ >expanded_ns.txt
./mc ls -r --versions myminio/versioned/ >expanded_ns_versions.txt

./mc admin decom start myminio/ http://localhost:9000/tmp/xl/{1...10}/disk{0...1}

until $(./mc admin decom status myminio/ | grep -q Complete); do
	echo "waiting for decom to finish..."
	sleep 1
done

kill $pid_1
kill $pid_2

sleep 5

./mc ls -r myminio/versioned/ >expanded_ns.txt
./mc ls -r --versions myminio/versioned/ >expanded_ns_versions.txt

./mc admin decom start myminio/ http://localhost:9000/tmp/xl/{1...10}/disk{0...1}

until $(./mc admin decom status myminio/ | grep -q Complete); do
	echo "waiting for decom to finish..."
	sleep 1
done

kill $pid_1
kill $pid_2

sleep 5

./mc ls -r myminio/versioned/ >expanded_ns.txt
./mc ls -r --versions myminio/versioned/ >expanded_ns_versions.txt

./mc admin decom start myminio/ http://localhost:9000/tmp/xl/{1...10}/disk{0...1}

count=0
until $(./mc admin decom status myminio/ | grep -q Complete); do
	echo "waiting for decom to finish..."
	count=$((count + 1))
	if [ ${count} -eq 120 ]; then
		./mc cat /tmp/expanded_*.log
	fi
	sleep 1
done

	driveReadsAwait     = "reads_await"
	driveWritesPerSec   = "writes_per_sec"
	driveWritesKBPerSec = "writes_kb_per_sec"
	driveWritesAwait    = "writes_await"
	drivePercUtil       = "perc_util"
)

var (
	driveUsedBytesMD = NewGaugeMD(driveUsedBytes,
		"Total storage used on a drive in bytes", allDriveLabels...)
	driveFreeBytesMD = NewGaugeMD(driveFreeBytes,