Add rbd_get_parent_info

Signed-off-by: Ye Yin <eyniy@qq.com>
This commit is contained in:
Ye Yin 2015-07-17 10:27:57 +08:00
parent 8f882afdc3
commit 80e3e9ea7f
2 changed files with 88 additions and 0 deletions

View File

@ -741,6 +741,25 @@ func (image *Image) GetSnapshot(snapname string) *Snapshot {
} }
} }
// int rbd_get_parent_info(rbd_image_t image,
// char *parent_pool_name, size_t ppool_namelen, char *parent_name,
// size_t pnamelen, char *parent_snap_name, size_t psnap_namelen)
func (image *Image) GetParentInfo(p_pool, p_name, p_snapname []byte) error {
ret := C.rbd_get_parent_info(
image.image,
(*C.char)(unsafe.Pointer(&p_pool[0])),
(C.size_t)(len(p_pool)),
(*C.char)(unsafe.Pointer(&p_name[0])),
(C.size_t)(len(p_name)),
(*C.char)(unsafe.Pointer(&p_snapname[0])),
(C.size_t)(len(p_snapname)))
if ret == 0 {
return nil
} else {
return RBDError(int(ret))
}
}
// int rbd_snap_remove(rbd_image_t image, const char *snapname); // int rbd_snap_remove(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Remove() error { func (snapshot *Snapshot) Remove() error {
var c_snapname *C.char = C.CString(snapshot.name) var c_snapname *C.char = C.CString(snapshot.name)

View File

@ -1,6 +1,7 @@
package rbd_test package rbd_test
import ( import (
"bytes"
"encoding/json" "encoding/json"
"github.com/noahdesu/go-ceph/rados" "github.com/noahdesu/go-ceph/rados"
"github.com/noahdesu/go-ceph/rbd" "github.com/noahdesu/go-ceph/rbd"
@ -161,3 +162,71 @@ func TestCreateSnapshot(t *testing.T) {
conn.DeletePool(poolname) conn.DeletePool(poolname)
conn.Shutdown() conn.Shutdown()
} }
func TestParentInfo(t *testing.T) {
conn, _ := rados.NewConn()
conn.ReadDefaultConfigFile()
conn.Connect()
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
assert.NoError(t, err)
name := "parent"
img, err := rbd.Create(ioctx, name, 1<<22, 1)
assert.NoError(t, err)
err = img.Open()
assert.NoError(t, err)
snapshot, err := img.CreateSnapshot("mysnap")
assert.NoError(t, err)
err = snapshot.Protect()
assert.NoError(t, err)
imgNew, err := img.Clone("mysnap", ioctx, "child", 1)
assert.NoError(t, err)
err = imgNew.Open()
assert.NoError(t, err)
parentPool := make([]byte, 128)
parentName := make([]byte, 128)
parentSnapname := make([]byte, 128)
err = imgNew.GetParentInfo(parentPool, parentName, parentSnapname)
assert.NoError(t, err)
n := bytes.Index(parentName, []byte{0})
pName := string(parentName[:n])
n = bytes.Index(parentSnapname, []byte{0})
pSnapname := string(parentSnapname[:n])
assert.Equal(t, pName, "parent", "they should be equal")
assert.Equal(t, pSnapname, "mysnap", "they should be equal")
err = imgNew.Close()
assert.NoError(t, err)
err = imgNew.Remove()
assert.NoError(t, err)
err = snapshot.Unprotect()
assert.NoError(t, err)
err = snapshot.Remove()
assert.NoError(t, err)
err = img.Close()
assert.NoError(t, err)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}