func Init(root string, config map[string]string) (convoydriver.ConvoyDriver, error) {
devicemapper.LogInitVerbose(1)
devicemapper.LogInit(&DMLogger{})
if err := checkEnvironment(); err != nil {
return nil, err
}
if err := util.MkdirIfNotExists(root); err != nil {
return nil, err
}
dev := &Device{
Root: root,
}
exists, err := util.ObjectExists(dev)
if err != nil {
return nil, err
}
if exists {
if err := util.ObjectLoad(dev); err != nil {
return nil, err
}
d := &Driver{
Mutex: &sync.Mutex{},
Device: *dev,
}
if err := d.activatePool(); err != nil {
return nil, err
}
if err := d.remountVolumes(); err != nil {
return nil, err
}
return d, nil
}
dev, err = verifyConfig(config)
if err != nil {
return nil, err
}
dev.Root = root
dataDev, err := os.Open(dev.DataDevice)
if err != nil {
return nil, err
}
defer dataDev.Close()
metadataDev, err := os.Open(dev.MetadataDevice)
if err != nil {
return nil, err
}
defer metadataDev.Close()
thinpSize, err := devicemapper.GetBlockDeviceSize(dataDev)
if err != nil {
return nil, err
}
dev.ThinpoolSize = int64(thinpSize)
dev.LastDevID = 0
if err = createPool(filepath.Base(dev.ThinpoolDevice), dataDev, metadataDev, uint32(dev.ThinpoolBlockSize)); err != nil {
return nil, err
}
if err = util.ObjectSave(dev); err != nil {
return nil, err
}
d := &Driver{
Mutex: &sync.Mutex{},
Device: *dev,
}
return d, nil
}
func Init(root, cfgName string, config map[string]string) (drivers.Driver, error) {
devicemapper.LogInitVerbose(1)
devicemapper.LogInit(&DMLogger{})
if supported := devicemapper.UdevSetSyncSupport(true); !supported {
return nil, fmt.Errorf("Udev sync is not supported. Cannot proceed.")
}
if util.ConfigExists(root, cfgName) {
dev := Device{}
err := util.LoadConfig(root, cfgName, &dev)
d := &Driver{
Mutex: &sync.Mutex{},
}
if err != nil {
return d, err
}
d.Device = dev
d.configName = cfgName
d.root = root
if err := d.activatePool(); err != nil {
return d, err
}
return d, nil
}
dev, err := verifyConfig(config)
if err != nil {
return nil, err
}
dev.Root = root
dataDev, err := os.Open(dev.DataDevice)
if err != nil {
return nil, err
}
defer dataDev.Close()
metadataDev, err := os.Open(dev.MetadataDevice)
if err != nil {
return nil, err
}
defer metadataDev.Close()
thinpSize, err := devicemapper.GetBlockDeviceSize(dataDev)
if err != nil {
return nil, err
}
dev.ThinpoolSize = int64(thinpSize)
dev.LastDevID = 0
err = createPool(filepath.Base(dev.ThinpoolDevice), dataDev, metadataDev, uint32(dev.ThinpoolBlockSize))
if err != nil {
return nil, err
}
err = util.SaveConfig(root, cfgName, &dev)
if err != nil {
return nil, err
}
d := &Driver{
root: root,
configName: cfgName,
Device: *dev,
Mutex: &sync.Mutex{},
}
log.Debug("Init done")
return d, nil
}