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Merge pull request #4 from egernst/vhost-user-add-blk

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Vhost-user:  add block device support
This commit is contained in:
Manohar Castelino 2017-12-15 13:45:12 -08:00 committed by GitHub
commit 064ffdb2b2
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2 changed files with 47 additions and 13 deletions
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45
qemu/qemu.go
View File

@ -704,7 +704,7 @@ func (blkdev BlockDevice) QemuParams(config *Config) []string {
return qemuParams
}
// VhostUserDeviceType is a qemu networking device type.
// VhostUserDeviceType is a qemu vhost-user device type.
type VhostUserDeviceType string
const (
@ -712,23 +712,38 @@ const (
VhostUserSCSI = "vhost-user-scsi-pci"
//VhostUserNet represents a net vhostuser device type
VhostUserNet = "virtio-net-pci"
//VhostUserBlk represents a block vhostuser device type
VhostUserBlk = "vhost-user-blk-pci"
)
// VhostUserDevice represents a qemu vhost-user network device meant to be passed
// VhostUserDevice represents a qemu vhost-user device meant to be passed
// in to the guest
type VhostUserDevice struct {
SocketPath string //path to vhostuser socket on host
CharDevID string
TypeDevID string //id (SCSI) or netdev (net) device parameter
MacAddress string //only valid if device type is VhostUserNet
TypeDevID string //variable QEMU parameter based on value of VhostUserType
Address string //used for MAC address in net case
VhostUserType VhostUserDeviceType
}
// Valid returns true if there is a valid socket path defined for VhostUserDevice
// Valid returns true if there is a valid structure defined for VhostUserDevice
func (vhostuserDev VhostUserDevice) Valid() bool {
if vhostuserDev.SocketPath == "" || vhostuserDev.CharDevID == "" ||
vhostuserDev.TypeDevID == "" ||
(vhostuserDev.VhostUserType == VhostUserNet && vhostuserDev.MacAddress == "") {
if vhostuserDev.SocketPath == "" || vhostuserDev.CharDevID == "" {
return false
}
switch vhostuserDev.VhostUserType {
case VhostUserNet:
if vhostuserDev.TypeDevID == "" || vhostuserDev.Address == "" {
return false
}
case VhostUserSCSI:
if vhostuserDev.TypeDevID == "" {
return false
}
case VhostUserBlk:
default:
return false
}
@ -746,8 +761,9 @@ func (vhostuserDev VhostUserDevice) QemuParams(config *Config) []string {
charParams = append(charParams, fmt.Sprintf("id=%s", vhostuserDev.CharDevID))
charParams = append(charParams, fmt.Sprintf("path=%s", vhostuserDev.SocketPath))
switch vhostuserDev.VhostUserType {
// if network based vhost device:
if vhostuserDev.VhostUserType == VhostUserNet {
case VhostUserNet:
netParams = append(netParams, "type=vhost-user")
netParams = append(netParams, fmt.Sprintf("id=%s", vhostuserDev.TypeDevID))
netParams = append(netParams, fmt.Sprintf("chardev=%s", vhostuserDev.CharDevID))
@ -755,11 +771,18 @@ func (vhostuserDev VhostUserDevice) QemuParams(config *Config) []string {
devParams = append(devParams, VhostUserNet)
devParams = append(devParams, fmt.Sprintf("netdev=%s", vhostuserDev.TypeDevID))
devParams = append(devParams, fmt.Sprintf("mac=%s", vhostuserDev.MacAddress))
} else {
devParams = append(devParams, fmt.Sprintf("mac=%s", vhostuserDev.Address))
case VhostUserSCSI:
devParams = append(devParams, VhostUserSCSI)
devParams = append(devParams, fmt.Sprintf("id=%s", vhostuserDev.TypeDevID))
devParams = append(devParams, fmt.Sprintf("chardev=%s", vhostuserDev.CharDevID))
case VhostUserBlk:
devParams = append(devParams, VhostUserBlk)
devParams = append(devParams, "logical_block_size=4096")
devParams = append(devParams, "size=512M")
devParams = append(devParams, fmt.Sprintf("chardev=%s", vhostuserDev.CharDevID))
default:
return nil
}
qemuParams = append(qemuParams, "-chardev")

15
qemu/qemu_test.go
View File

@ -269,13 +269,24 @@ func TestAppendDeviceBlock(t *testing.T) {
var deviceVhostUserNetString = "-chardev socket,id=char1,path=/tmp/nonexistentsocket.socket -netdev type=vhost-user,id=net1,chardev=char1,vhostforce -device virtio-net-pci,netdev=net1,mac=00:11:22:33:44:55"
var deviceVhostUserSCSIString = "-chardev socket,id=char1,path=/tmp/nonexistentsocket.socket -device vhost-user-scsi-pci,id=scsi1,chardev=char1"
var deviceVhostUserBlkString = "-chardev socket,id=char2,path=/tmp/nonexistentsocket.socket -device vhost-user-blk-pci,logical_block_size=4096,size=512M,chardev=char2"
func TestAppendDeviceVhostUser(t *testing.T) {
vhostuserBlkDevice := VhostUserDevice{
SocketPath: "/tmp/nonexistentsocket.socket",
CharDevID: "char2",
TypeDevID: "",
Address: "",
VhostUserType: VhostUserBlk,
}
testAppend(vhostuserBlkDevice, deviceVhostUserBlkString, t)
vhostuserSCSIDevice := VhostUserDevice{
SocketPath: "/tmp/nonexistentsocket.socket",
CharDevID: "char1",
TypeDevID: "scsi1",
MacAddress: "",
Address: "",
VhostUserType: VhostUserSCSI,
}
testAppend(vhostuserSCSIDevice, deviceVhostUserSCSIString, t)
@ -284,7 +295,7 @@ func TestAppendDeviceVhostUser(t *testing.T) {
SocketPath: "/tmp/nonexistentsocket.socket",
CharDevID: "char1",
TypeDevID: "net1",
MacAddress: "00:11:22:33:44:55",
Address: "00:11:22:33:44:55",
VhostUserType: VhostUserNet,
}
testAppend(vhostuserNetDevice, deviceVhostUserNetString, t)