mirror of https://github.com/ceph/go-ceph
rbd: split Create() off into Create2() ad Create3() following librbd.h
The C library offers rbd_create2() and rbd_create3() and does not try to cover all options with rbd_create(). For users that are familiar with the C API, the Create2() and Create3() functions have been added. The existing Create() API still handles the complete set of rbd_create*() functions, so backwards compatibility is covered. Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
parent
de3bd20fe3
commit
6a17d59988
70
rbd/rbd.go
70
rbd/rbd.go
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@ -174,6 +174,8 @@ func GetImage(ioctx *rados.IOContext, name string) *Image {
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}
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// int rbd_create(rados_ioctx_t io, const char *name, uint64_t size, int *order);
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//
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// But also (for backward compability):
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// int rbd_create2(rados_ioctx_t io, const char *name, uint64_t size,
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// uint64_t features, int *order);
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// int rbd_create3(rados_ioctx_t io, const char *name, uint64_t size,
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@ -183,22 +185,18 @@ func Create(ioctx *rados.IOContext, name string, size uint64, order int,
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args ...uint64) (image *Image, err error) {
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var ret C.int
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c_order := C.int(order)
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c_name := C.CString(name)
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defer C.free(unsafe.Pointer(c_name))
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switch len(args) {
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case 3:
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ret = C.rbd_create3(C.rados_ioctx_t(ioctx.Pointer()),
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c_name, C.uint64_t(size),
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C.uint64_t(args[0]), &c_order,
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C.uint64_t(args[1]), C.uint64_t(args[2]))
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return Create3(ioctx, name, size, args[0], order, args[1],
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args[2])
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case 1:
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ret = C.rbd_create2(C.rados_ioctx_t(ioctx.Pointer()),
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c_name, C.uint64_t(size),
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C.uint64_t(args[0]), &c_order)
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return Create2(ioctx, name, size, args[0], order)
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case 0:
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c_order := C.int(order)
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c_name := C.CString(name)
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defer C.free(unsafe.Pointer(c_name))
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ret = C.rbd_create(C.rados_ioctx_t(ioctx.Pointer()),
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c_name, C.uint64_t(size), &c_order)
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default:
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@ -215,6 +213,54 @@ func Create(ioctx *rados.IOContext, name string, size uint64, order int,
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}, nil
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}
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// int rbd_create2(rados_ioctx_t io, const char *name, uint64_t size,
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// uint64_t features, int *order);
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func Create2(ioctx *rados.IOContext, name string, size uint64, features uint64,
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order int) (image *Image, err error) {
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var ret C.int
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c_order := C.int(order)
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c_name := C.CString(name)
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defer C.free(unsafe.Pointer(c_name))
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ret = C.rbd_create2(C.rados_ioctx_t(ioctx.Pointer()), c_name,
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C.uint64_t(size), C.uint64_t(features), &c_order)
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if ret < 0 {
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return nil, RBDError(ret)
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}
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return &Image{
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ioctx: ioctx,
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name: name,
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}, nil
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}
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// int rbd_create3(rados_ioctx_t io, const char *name, uint64_t size,
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// uint64_t features, int *order,
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// uint64_t stripe_unit, uint64_t stripe_count);
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func Create3(ioctx *rados.IOContext, name string, size uint64, features uint64,
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order int, stripe_unit uint64, stripe_count uint64) (image *Image, err error) {
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var ret C.int
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c_order := C.int(order)
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c_name := C.CString(name)
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defer C.free(unsafe.Pointer(c_name))
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ret = C.rbd_create3(C.rados_ioctx_t(ioctx.Pointer()), c_name,
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C.uint64_t(size), C.uint64_t(features), &c_order,
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C.uint64_t(stripe_unit), C.uint64_t(stripe_count))
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if ret < 0 {
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return nil, RBDError(ret)
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}
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return &Image{
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ioctx: ioctx,
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name: name,
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}, nil
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}
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// int rbd_clone(rados_ioctx_t p_ioctx, const char *p_name,
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// const char *p_snapname, rados_ioctx_t c_ioctx,
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// const char *c_name, uint64_t features, int *c_order);
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@ -29,7 +29,7 @@ func TestVersion(t *testing.T) {
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assert.False(t, patch < 0 || patch > 1000, "invalid patch")
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}
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func TestCreateImage(t *testing.T) {
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func TestImageCreate(t *testing.T) {
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conn, _ := rados.NewConn()
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conn.ReadDefaultConfigFile()
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conn.Connect()
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@ -66,6 +66,54 @@ func TestCreateImage(t *testing.T) {
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conn.Shutdown()
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}
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func TestImageCreate2(t *testing.T) {
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conn, _ := rados.NewConn()
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conn.ReadDefaultConfigFile()
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conn.Connect()
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poolname := GetUUID()
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err := conn.MakePool(poolname)
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assert.NoError(t, err)
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ioctx, err := conn.OpenIOContext(poolname)
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assert.NoError(t, err)
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name := GetUUID()
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image, err := rbd.Create2(ioctx, name, 1<<22,
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RbdFeatureLayering|RbdFeatureStripingV2, 22)
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assert.NoError(t, err)
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err = image.Remove()
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assert.NoError(t, err)
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ioctx.Destroy()
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conn.DeletePool(poolname)
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conn.Shutdown()
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}
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func TestImageCreate3(t *testing.T) {
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conn, _ := rados.NewConn()
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conn.ReadDefaultConfigFile()
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conn.Connect()
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poolname := GetUUID()
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err := conn.MakePool(poolname)
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assert.NoError(t, err)
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ioctx, err := conn.OpenIOContext(poolname)
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assert.NoError(t, err)
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name := GetUUID()
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image, err := rbd.Create3(ioctx, name, 1<<22,
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RbdFeatureLayering|RbdFeatureStripingV2, 22, 4096, 2)
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assert.NoError(t, err)
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err = image.Remove()
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assert.NoError(t, err)
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ioctx.Destroy()
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conn.DeletePool(poolname)
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conn.Shutdown()
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}
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func TestGetImageNames(t *testing.T) {
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conn, _ := rados.NewConn()
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conn.ReadDefaultConfigFile()
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