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moby--moby/daemon/graphdriver/devmapper/devmapper_test.go
Chun Chen 2458452a3b Try to resize data and metadata loopback file when initiating devicemapper
Signed-off-by: Chun Chen <ramichen@tencent.com>
2015-09-24 09:31:00 +08:00

81 lines
2.6 KiB
Go

// +build linux
package devmapper
import (
"fmt"
"testing"
"github.com/docker/docker/daemon/graphdriver"
"github.com/docker/docker/daemon/graphdriver/graphtest"
)
func init() {
// Reduce the size the the base fs and loopback for the tests
defaultDataLoopbackSize = 300 * 1024 * 1024
defaultMetaDataLoopbackSize = 200 * 1024 * 1024
defaultBaseFsSize = 300 * 1024 * 1024
defaultUdevSyncOverride = true
if err := graphtest.InitLoopbacks(); err != nil {
panic(err)
}
}
// This avoids creating a new driver for each test if all tests are run
// Make sure to put new tests between TestDevmapperSetup and TestDevmapperTeardown
func TestDevmapperSetup(t *testing.T) {
graphtest.GetDriver(t, "devicemapper")
}
func TestDevmapperCreateEmpty(t *testing.T) {
graphtest.DriverTestCreateEmpty(t, "devicemapper")
}
func TestDevmapperCreateBase(t *testing.T) {
graphtest.DriverTestCreateBase(t, "devicemapper")
}
func TestDevmapperCreateSnap(t *testing.T) {
graphtest.DriverTestCreateSnap(t, "devicemapper")
}
func TestDevmapperTeardown(t *testing.T) {
graphtest.PutDriver(t)
}
func TestDevmapperReduceLoopBackSize(t *testing.T) {
tenMB := int64(10 * 1024 * 1024)
testChangeLoopBackSize(t, -tenMB, defaultDataLoopbackSize, defaultMetaDataLoopbackSize)
}
func TestDevmapperIncreaseLoopBackSize(t *testing.T) {
tenMB := int64(10 * 1024 * 1024)
testChangeLoopBackSize(t, tenMB, defaultDataLoopbackSize+tenMB, defaultMetaDataLoopbackSize+tenMB)
}
func testChangeLoopBackSize(t *testing.T, delta, expectDataSize, expectMetaDataSize int64) {
driver := graphtest.GetDriver(t, "devicemapper").(*graphtest.Driver).Driver.(*graphdriver.NaiveDiffDriver).ProtoDriver.(*Driver)
defer graphtest.PutDriver(t)
// make sure data or metadata loopback size are the default size
if s := driver.DeviceSet.Status(); s.Data.Total != uint64(defaultDataLoopbackSize) || s.Metadata.Total != uint64(defaultMetaDataLoopbackSize) {
t.Fatalf("data or metadata loop back size is incorrect")
}
if err := driver.Cleanup(); err != nil {
t.Fatal(err)
}
//Reload
d, err := Init(driver.home, []string{
fmt.Sprintf("dm.loopdatasize=%d", defaultDataLoopbackSize+delta),
fmt.Sprintf("dm.loopmetadatasize=%d", defaultMetaDataLoopbackSize+delta),
})
if err != nil {
t.Fatalf("error creating devicemapper driver: %v", err)
}
driver = d.(*graphdriver.NaiveDiffDriver).ProtoDriver.(*Driver)
if s := driver.DeviceSet.Status(); s.Data.Total != uint64(expectDataSize) || s.Metadata.Total != uint64(expectMetaDataSize) {
t.Fatalf("data or metadata loop back size is incorrect")
}
if err := driver.Cleanup(); err != nil {
t.Fatal(err)
}
}