func connectNBD(srv *torus.Server, f *block.BlockFile, target string, closer chan bool) error {
defer f.Close()
size := f.Size()
gmd := srv.MDS.GlobalMetadata()
handle := nbd.Create(f, int64(size), int64(gmd.BlockSize))
if target == "" {
t, err := nbd.FindDevice()
if err != nil {
return err
}
target = t
}
_, err := handle.OpenDevice(target)
if err != nil {
return err
}
go func(n *nbd.NBD) {
<-closer
n.Disconnect()
}(handle)
err = handle.Serve()
if err != nil {
return fmt.Errorf("error from nbd server: %s", err)
}
return nil
}
func connectNBD(srv *torus.Server, f *block.BlockFile, target string, closer chan bool) error {
defer f.Close()
size := f.Size()
gmd, err := srv.MDS.GlobalMetadata()
if err != nil {
return err
}
handle := nbd.Create(f, int64(size), int64(gmd.BlockSize))
if target == "" {
target, err = nbd.FindDevice()
if err != nil {
fmt.Println(err)
return err
}
}
dev, err := handle.OpenDevice(target)
if err != nil {
fmt.Println(err)
return err
}
fmt.Println("Connected to", dev)
go func(n *nbd.NBD) {
<-closer
n.Disconnect()
}(handle)
err = handle.Serve()
if err != nil {
fmt.Fprintf(os.Stderr, "error from nbd server: %s\n", err)
os.Exit(1)
}
return handle.Close()
}
func ConnectAndServe(f *block.BlockFile, name string, closer chan bool) error {
wwn := tcmu.NaaWWN{
// TODO(barakmich): CoreOS OUI here
OUI: "000000",
VendorID: tcmu.GenerateSerial(name),
}
h := &tcmu.SCSIHandler{
HBA: 30,
LUN: 0,
WWN: wwn,
VolumeName: name,
// 1GiB, 1K
DataSizes: tcmu.DataSizes{
VolumeSize: int64(f.Size()),
BlockSize: defaultBlockSize,
},
DevReady: tcmu.MultiThreadedDevReady(
&torusHandler{
file: f,
name: name,
inq: &tcmu.InquiryInfo{
VendorID: "CoreOS",
ProductID: "TorusBlk",
ProductRev: "0001",
},
}, 1),
}
d, err := tcmu.OpenTCMUDevice(devPath, h)
if err != nil {
return err
}
defer d.Close()
fmt.Printf("Attached to %s/%s. Server loop begins ... \n", devPath, name)
<-closer
return nil
}