go-ceph/rbd/rbd_test.go
pkthapa d442b121db go-ceph: Versions upgrade
- bump github.com/gofrs/uuid from v4.4.0+incompatible to v5.3.0
- bump golang.org/x/sys from v0.24.0 to v0.25.0

Signed-off-by: Pankaj Thapa <pk.thapa66@gmail.com>
2024-09-11 13:42:19 +00:00

1770 lines
42 KiB
Go

package rbd
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os/exec"
"sort"
"testing"
"time"
"github.com/ceph/go-ceph/rados"
"github.com/gofrs/uuid/v5"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
testImageSize = uint64(1 << 22)
testImageOrder = 22
)
func GetUUID() string {
return uuid.Must(uuid.NewV4()).String()
}
func TestVersion(t *testing.T) {
var major, minor, patch = Version()
assert.False(t, major < 0 || major > 1000, "invalid major")
assert.False(t, minor < 0 || minor > 1000, "invalid minor")
assert.False(t, patch < 0 || patch > 1000, "invalid patch")
}
func radosConnect(t *testing.T) *rados.Conn {
conn, err := rados.NewConn()
require.NoError(t, err)
err = conn.ReadDefaultConfigFile()
require.NoError(t, err)
waitForRadosConn(t, conn)
return conn
}
func radosConnectConfig(t *testing.T, p string) *rados.Conn {
conn, err := rados.NewConn()
require.NoError(t, err)
err = conn.ReadConfigFile(p)
require.NoError(t, err)
waitForRadosConn(t, conn)
return conn
}
func waitForRadosConn(t *testing.T, conn *rados.Conn) {
var err error
timeout := time.After(time.Second * 15)
ch := make(chan error)
go func(conn *rados.Conn) {
ch <- conn.Connect()
}(conn)
select {
case err = <-ch:
case <-timeout:
err = fmt.Errorf("timed out waiting for connect")
}
require.NoError(t, err)
}
func TestImageCreate(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
image, err := Create(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
name = GetUUID()
image, err = Create(ioctx, name, testImageSize, testImageOrder,
FeatureLayering|FeatureStripingV2)
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
name = GetUUID()
image, err = Create(ioctx, name, testImageSize, testImageOrder,
FeatureLayering|FeatureStripingV2, 4096, 2)
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
// invalid order
name = GetUUID()
_, err = Create(ioctx, name, testImageSize, -1)
assert.Error(t, err)
// too many arguments
_, err = Create(ioctx, name, testImageSize, testImageOrder,
FeatureLayering|FeatureStripingV2, 4096, 2, 123)
assert.Error(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageCreate2(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
assert.NoError(t, err)
name := GetUUID()
image, err := Create2(ioctx, name, testImageSize,
FeatureLayering|FeatureStripingV2, testImageOrder)
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageCreate3(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
assert.NoError(t, err)
name := GetUUID()
image, err := Create3(ioctx, name, testImageSize,
FeatureLayering|FeatureStripingV2, testImageOrder, 4096, 2)
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestCreateImageWithOptions(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
assert.NoError(t, err)
// nil options, causes a panic if not handled correctly
name := GetUUID()
options := NewRbdImageOptions()
err = CreateImage(nil, name, testImageSize, options)
assert.Error(t, err)
err = CreateImage(ioctx, "", testImageSize, options)
assert.Error(t, err)
err = CreateImage(ioctx, name, testImageSize, nil)
assert.Error(t, err)
// empty/default options
name = GetUUID()
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
// create image with RbdImageOptionOrder
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
name = GetUUID()
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
options.Clear()
// create image with a different data pool
datapool := GetUUID()
err = conn.MakePool(datapool)
assert.NoError(t, err)
err = options.SetString(ImageOptionDataPool, datapool)
assert.NoError(t, err)
name = GetUUID()
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
conn.DeletePool(datapool)
// cleanup
options.Destroy()
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestGetImageNames(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
createdList := []string{}
for i := 0; i < 10; i++ {
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
createdList = append(createdList, name)
}
imageNames, err := GetImageNames(ioctx)
assert.NoError(t, err)
sort.Strings(createdList)
sort.Strings(imageNames)
assert.Equal(t, createdList, imageNames)
for _, name := range createdList {
img := GetImage(ioctx, name)
err := img.Remove()
assert.NoError(t, err)
}
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestDeprecatedImageOpen(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
image, err := Create(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
// an integer is not a valid argument
err = image.Open(123)
assert.Error(t, err)
// open read-write
err = image.Open()
assert.NoError(t, err)
err = image.Close()
assert.NoError(t, err)
// open read-only
err = image.Open(true)
assert.NoError(t, err)
bytesIn := []byte("input data")
_, err = image.Write(bytesIn)
// writing should fail in read-only mode
assert.Error(t, err)
err = image.Remove()
// removing should fail while image is opened
assert.Equal(t, err, ErrImageIsOpen)
err = image.Close()
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageResize(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
reqSize := uint64(1024 * 1024 * 4) // 4MB
err = quickCreate(ioctx, name, reqSize, testImageOrder)
assert.NoError(t, err)
image, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
size, err := image.GetSize()
assert.NoError(t, err)
assert.Equal(t, size, reqSize)
err = image.Resize(reqSize * 2)
assert.NoError(t, err)
size, err = image.GetSize()
assert.NoError(t, err)
assert.Equal(t, size, reqSize*2)
err = image.Close()
assert.NoError(t, err)
err = image.Resize(reqSize * 2)
assert.Equal(t, err, ErrImageNotOpen)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageProperties(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
require.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
reqSize := uint64(1024 * 1024 * 4) // 4MB
_, err = Create3(ioctx, name, reqSize,
FeatureLayering|FeatureStripingV2, testImageOrder, 4096, 2)
require.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
require.NoError(t, err)
format, err := img.IsOldFormat()
assert.NoError(t, err)
assert.Equal(t, format, false)
size, err := img.GetSize()
assert.NoError(t, err)
assert.Equal(t, size, reqSize)
features, err := img.GetFeatures()
assert.NoError(t, err)
// compare features with the two requested ones
assert.Equal(t, features&(FeatureLayering|FeatureStripingV2),
FeatureLayering|FeatureStripingV2)
stripeUnit, err := img.GetStripeUnit()
assert.NoError(t, err)
assert.Equal(t, stripeUnit, uint64(4096))
stripeCount, err := img.GetStripeCount()
assert.NoError(t, err)
assert.Equal(t, stripeCount, uint64(2))
_, err = img.GetOverlap()
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()
}
func TestImageRename(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
img := GetImage(ioctx, name)
err = img.Rename(name)
assert.Error(t, err)
err = img.Rename(GetUUID())
assert.NoError(t, err)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageSeek(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
_, err = img.Seek(0, SeekSet)
assert.NoError(t, err)
bytesIn := []byte("input data")
numIn, err := img.Write(bytesIn)
assert.NoError(t, err)
assert.Equal(t, numIn, len(bytesIn))
pos, err := img.Seek(0, SeekCur)
assert.NoError(t, err)
assert.Equal(t, pos, int64(numIn))
pos, err = img.Seek(0, SeekSet)
assert.NoError(t, err)
assert.Equal(t, pos, int64(0))
bytesOut := make([]byte, len(bytesIn))
numOut, err := img.Read(bytesOut)
assert.NoError(t, err)
assert.Equal(t, numOut, len(bytesOut))
assert.Equal(t, bytesIn, bytesOut)
pos, err = img.Seek(0, SeekCur)
assert.NoError(t, err)
assert.Equal(t, pos, int64(numOut))
pos, err = img.Seek(0, SeekSet)
assert.NoError(t, err)
assert.Equal(t, pos, int64(0))
pos, err = img.Seek(0, SeekEnd)
assert.NoError(t, err)
assert.Equal(t, pos, int64(testImageSize))
_, err = img.Seek(0, -1)
assert.Error(t, err)
err = img.Close()
assert.NoError(t, err)
_, err = img.Seek(0, SeekEnd)
assert.Equal(t, err, ErrImageNotOpen)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageDiscard(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
n, err := img.Discard(0, 1<<16)
assert.NoError(t, err)
assert.Equal(t, n, 1<<16)
err = img.Close()
assert.NoError(t, err)
img, err = OpenImageReadOnly(ioctx, name, NoSnapshot)
assert.NoError(t, err)
// when read-only, discard should fail
_, err = img.Discard(0, 1<<16)
assert.Error(t, err)
err = img.Close()
assert.NoError(t, err)
_, err = img.Discard(0, 1<<16)
assert.Equal(t, err, ErrImageNotOpen)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestWriteSame(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
// WriteSame() by default calls discard when writing only zeros. This
// can be unexpected when trying to allocate a whole RBD image. To
// disable this behaviour, and actually write zeros, the option
// `rbd_discard_on_zeroed_write_same` needs to be disabled.
conn.SetConfigOption("rbd_discard_on_zeroed_write_same", "false")
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
dataOut := []byte("this is a string of 28 bytes")
t.Run("writeAndRead", func(t *testing.T) {
// write some bytes at the start of the image
numOut, err := img.WriteSame(0, uint64(4*len(dataOut)), dataOut, rados.OpFlagNone)
assert.Equal(t, int64(4*len(dataOut)), numOut)
assert.NoError(t, err)
// the same string should be read from byte 0
dataIn := make([]byte, len(dataOut))
numIn, err := img.ReadAt(dataIn, 0)
assert.Equal(t, len(dataOut), numIn)
assert.Equal(t, dataOut, dataIn)
assert.NoError(t, err)
// the same string should be read from byte 28
dataIn = make([]byte, len(dataOut))
numIn, err = img.ReadAt(dataIn, 28)
assert.Equal(t, len(dataOut), numIn)
assert.Equal(t, dataOut, dataIn)
assert.NoError(t, err)
})
t.Run("writePartialData", func(t *testing.T) {
// writing a non-multiple of dataOut len will fail
_, err = img.WriteSame(0, 64, dataOut, rados.OpFlagNone)
assert.Error(t, err)
})
t.Run("writeNoData", func(t *testing.T) {
// writing empty data should succeed
numIn, err := img.WriteSame(0, 64, []byte(""), rados.OpFlagNone)
assert.NoError(t, err)
assert.Equal(t, int64(0), numIn)
})
t.Run("zerofill", func(t *testing.T) {
// implement allocating an image by writing zeros to it
sc, err := img.GetStripeCount()
assert.NoError(t, err)
// fetch the actual size of the image as available in the pool, can be
// margially different from the requested image size
st, err := img.Stat()
assert.NoError(t, err)
size := st.Size
// zeroBlock is the stripe-period: size of the object-size multiplied
// by the stripe-count
order := uint(st.Order) // signed shifting requires newer golang?!
zeroBlock := make([]byte, sc*(1<<order))
numIn, err := img.WriteSame(0, size, zeroBlock, rados.OpFlagNone)
assert.NoError(t, err)
assert.Equal(t, size, uint64(numIn))
cmd := exec.Command("rbd", "diff", "--pool", poolname, name)
out, err := cmd.Output()
assert.NoError(t, err)
assert.NotEqual(t, "", string(out))
})
err = img.Close()
assert.NoError(t, err)
t.Run("writeSameReadOnly", func(t *testing.T) {
// writing to a read-only image should fail
img, err = OpenImageReadOnly(ioctx, name, NoSnapshot)
assert.NoError(t, err)
_, err = img.WriteSame(96, 32, dataOut, rados.OpFlagNone)
assert.Error(t, err)
err = img.Close()
assert.NoError(t, err)
})
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestIOReaderWriter(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
stats, err := img.Stat()
assert.NoError(t, err)
encoder := json.NewEncoder(img)
assert.NoError(t, encoder.Encode(stats))
err = img.Flush()
assert.NoError(t, err)
_, err = img.Seek(0, SeekSet)
assert.NoError(t, err)
var stats2 *ImageInfo
decoder := json.NewDecoder(img)
assert.NoError(t, decoder.Decode(&stats2))
assert.Equal(t, &stats, &stats2)
_, err = img.Seek(0, SeekSet)
bytesIn := []byte("input data")
_, err = img.Write(bytesIn)
assert.NoError(t, err)
_, err = img.Seek(0, SeekSet)
assert.NoError(t, err)
// reading 0 bytes should succeed
nothing := make([]byte, 0)
numOut, err := img.Read(nothing)
assert.Equal(t, numOut, 0)
assert.NoError(t, err)
bytesOut := make([]byte, len(bytesIn))
numOut, err = img.Read(bytesOut)
assert.Equal(t, numOut, len(bytesIn))
assert.Equal(t, bytesIn, bytesOut)
// write some data at the end of the image
offset := int64(stats.Size) - int64(len(bytesIn))
_, err = img.Seek(offset, SeekSet)
assert.NoError(t, err)
numOut, err = img.Write(bytesIn)
assert.Equal(t, len(bytesIn), numOut)
assert.NoError(t, err)
_, err = img.Seek(offset, SeekSet)
assert.NoError(t, err)
bytesOut = make([]byte, len(bytesIn))
numOut, err = img.Read(bytesOut)
assert.Equal(t, numOut, len(bytesIn))
assert.Equal(t, bytesIn, bytesOut)
assert.NoError(t, err)
// reading after EOF (needs to be large enough to hit EOF)
_, err = img.Seek(offset, SeekSet)
assert.NoError(t, err)
bytesIn = make([]byte, len(bytesOut)+256)
numOut, err = img.Read(bytesIn)
assert.Equal(t, numOut, len(bytesOut))
assert.Equal(t, bytesIn[0:len(bytesOut)], bytesOut)
assert.Equal(t, io.EOF, err)
err = img.Close()
assert.NoError(t, err)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestReadAt(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
// write 0 bytes should succeed
dataOut := make([]byte, 0)
numOut, err := img.WriteAt(dataOut, 256)
assert.Equal(t, 0, numOut)
assert.NoError(t, err)
// reading 0 bytes should be successful
dataIn := make([]byte, 0)
numIn, err := img.ReadAt(dataIn, 256)
assert.Equal(t, 0, numIn)
assert.NoError(t, err)
// write some data at the end of the image
dataOut = []byte("Hi rbd! Nice to talk through go-ceph :)")
stats, err := img.Stat()
require.NoError(t, err)
offset := int64(stats.Size) - int64(len(dataOut))
numOut, err = img.WriteAt(dataOut, offset)
assert.Equal(t, len(dataOut), numOut)
assert.NoError(t, err)
dataIn = make([]byte, len(dataOut))
numIn, err = img.ReadAt(dataIn, offset)
assert.Equal(t, numIn, len(dataIn))
assert.Equal(t, dataIn, dataOut)
assert.NoError(t, err)
// reading after EOF (needs to be large enough to hit EOF)
dataIn = make([]byte, len(dataOut)+256)
numIn, err = img.ReadAt(dataIn, offset)
assert.Equal(t, numIn, len(dataOut))
assert.Equal(t, dataIn[0:len(dataOut)], dataOut)
assert.Equal(t, io.EOF, err)
err = img.Close()
assert.NoError(t, err)
// writing to a read-only image should fail
img, err = OpenImageReadOnly(ioctx, name, NoSnapshot)
assert.NoError(t, err)
_, err = img.WriteAt(dataOut, 256)
assert.Error(t, err)
err = img.Close()
assert.NoError(t, err)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestImageCopy(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
t.Run("invalidParameters", func(t *testing.T) {
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
// img not open, should fail
img := GetImage(ioctx, name)
err = img.Copy(nil, "")
assert.Equal(t, err, ErrImageNotOpen)
img, err := OpenImage(ioctx, name, NoSnapshot)
require.NoError(t, err)
// pass invalid parameters
err = img.Copy(nil, "")
assert.Error(t, err) // order of errors not enforced
err = img.Copy(ioctx, "")
assert.Equal(t, err, ErrNoName)
err = img.Copy(nil, "duplicate")
assert.Equal(t, err, ErrNoIOContext)
err = img.Close()
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
})
// try successful copying
t.Run("successfulCopy", func(t *testing.T) {
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
require.NoError(t, err)
name2 := GetUUID()
err = img.Copy(ioctx, name2)
require.NoError(t, err)
img2, err := OpenImage(ioctx, name2, NoSnapshot)
require.NoError(t, err)
err = img2.Close()
assert.NoError(t, err)
err = img2.Remove()
assert.NoError(t, err)
err = img.Close()
assert.NoError(t, err)
})
t.Run("copy2ImageNotOpen", func(t *testing.T) {
name := GetUUID()
name2 := GetUUID()
img := GetImage(ioctx, name)
img2 := GetImage(ioctx, name2)
err = img.Copy2(img2)
assert.Equal(t, err, ErrImageNotOpen)
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
img, err = OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
err = img.Copy2(img2)
assert.Equal(t, err, ErrImageNotOpen)
err = img.Close()
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
})
t.Run("successfulCopy2", func(t *testing.T) {
name := GetUUID()
name2 := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
err = CreateImage(ioctx, name2, testImageSize, options)
require.NoError(t, err)
img2, err := OpenImage(ioctx, name2, NoSnapshot)
assert.NoError(t, err)
err = img.Copy2(img2)
require.NoError(t, err)
err = img2.Close()
assert.NoError(t, err)
err = img2.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()
}
func TestImageDeepCopy(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
t.Run("invalidParameters", func(t *testing.T) {
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
// img not open, should fail
img := GetImage(ioctx, name)
err = img.DeepCopy(nil, "", nil)
assert.Equal(t, err, ErrImageNotOpen)
img, err := OpenImage(ioctx, name, NoSnapshot)
require.NoError(t, err)
// pass invalid parameters
err = img.DeepCopy(nil, "", nil)
assert.Error(t, err) // order of errors not enforced
err = img.DeepCopy(ioctx, "", options)
assert.Equal(t, err, ErrNoName)
err = img.DeepCopy(nil, "duplicate", options)
assert.Equal(t, err, ErrNoIOContext)
err = img.DeepCopy(ioctx, "copied", nil)
assert.Error(t, err) // rbdError(C.EINVAL), but can not use C in tests
err = img.Close()
assert.NoError(t, err)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
})
// try successful copying
t.Run("successfulDeepCopy", func(t *testing.T) {
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = CreateImage(ioctx, name, testImageSize, options)
require.NoError(t, err)
img, err := OpenImage(ioctx, name, NoSnapshot)
require.NoError(t, err)
name2 := GetUUID()
err = img.DeepCopy(ioctx, name2, options)
require.NoError(t, err)
img2, err := OpenImage(ioctx, name2, NoSnapshot)
require.NoError(t, err)
err = img2.Close()
assert.NoError(t, err)
err = img2.Remove()
assert.NoError(t, err)
err = img.Close()
assert.NoError(t, err)
})
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestParentInfo(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := "parent"
img, err := Create(ioctx, name, testImageSize, testImageOrder, 1)
assert.NoError(t, err)
img, err = OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
snapshot, err := img.CreateSnapshot("mysnap")
assert.NoError(t, err)
err = snapshot.Protect()
assert.NoError(t, err)
// create an image context with the parent+snapshot
snapImg, err := OpenImage(ioctx, name, "mysnap")
assert.NoError(t, err)
// ensure no children prior to clone
pools, images, err := snapImg.ListChildren()
assert.NoError(t, err)
assert.Equal(t, len(pools), 0, "pools equal")
assert.Equal(t, len(images), 0, "children length equal")
// invalid order, should fail
_, err = img.Clone("mysnap", ioctx, "child", 1, -1)
assert.Error(t, err)
_, err = img.Clone("mysnap", ioctx, "child", 1, testImageOrder)
assert.NoError(t, err)
imgNew, err := OpenImage(ioctx, "child", NoSnapshot)
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")
pools, images, err = snapImg.ListChildren()
assert.NoError(t, err)
assert.Equal(t, len(pools), 1, "pools equal")
assert.Equal(t, len(images), 1, "children length 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 = snapImg.Close()
assert.NoError(t, err)
err = img.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestNoIOContext(t *testing.T) {
image := GetImage(nil, "nonexistent")
_, err := image.Clone("new snapshot", nil, "clone", 0, 0)
assert.Equal(t, err, ErrNoIOContext)
err = image.Remove()
assert.Equal(t, err, ErrNoIOContext)
err = image.Trash(15 * time.Second)
assert.Equal(t, err, ErrNoIOContext)
err = image.Rename("unknown")
assert.Equal(t, err, ErrNoIOContext)
err = image.Open()
assert.Equal(t, err, ErrNoIOContext)
}
func TestErrorNoName(t *testing.T) {
image := GetImage(nil, "")
err := image.Remove()
assert.Equal(t, err, ErrNoName)
err = image.Trash(15 * time.Second)
assert.Equal(t, err, ErrNoName)
err = image.Rename("unknown")
assert.Equal(t, err, ErrNoName)
err = image.Open()
assert.Equal(t, err, ErrNoName)
}
func TestErrorImageNotOpen(t *testing.T) {
image := GetImage(nil, "nonexistent")
err := image.Close()
assert.Equal(t, err, ErrImageNotOpen)
err = image.Resize(2 << 22)
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.Stat()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.IsOldFormat()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.GetSize()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.GetFeatures()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.GetStripeUnit()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.GetStripeCount()
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.GetOverlap()
assert.Equal(t, err, ErrImageNotOpen)
err = image.Flatten()
assert.Equal(t, err, ErrImageNotOpen)
_, _, err = image.ListChildren()
assert.Equal(t, err, ErrImageNotOpen)
_, _, err = image.ListLockers()
assert.Equal(t, err, ErrImageNotOpen)
err = image.LockExclusive("a magic cookie")
assert.Equal(t, err, ErrImageNotOpen)
err = image.LockShared("a magic cookie", "tasty")
assert.Equal(t, err, ErrImageNotOpen)
err = image.BreakLock("a magic cookie", "tasty")
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.Read(nil)
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.Write(nil)
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.ReadAt(nil, 0)
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.WriteAt(nil, 0)
assert.Equal(t, err, ErrImageNotOpen)
_, err = image.WriteSame(64, 128, []byte("not opened"), rados.OpFlagNone)
assert.Equal(t, err, ErrImageNotOpen)
err = image.Flush()
assert.Equal(t, err, ErrImageNotOpen)
}
func TestNotFound(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
img, err := OpenImage(ioctx, name, NoSnapshot)
assert.Equal(t, err, ErrNotFound)
assert.Nil(t, img)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestTrashImage(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
image := GetImage(ioctx, name)
err = image.Trash(time.Hour)
assert.NoError(t, err)
trashList, err := GetTrashList(ioctx)
assert.NoError(t, err)
assert.Equal(t, len(trashList), 1, "trashList length equal")
err = TrashRestore(ioctx, trashList[0].Id, name+"_restored")
assert.NoError(t, err)
image2 := GetImage(ioctx, name+"_restored")
err = image2.Trash(time.Hour)
assert.NoError(t, err)
trashList, err = GetTrashList(ioctx)
assert.NoError(t, err)
assert.Equal(t, len(trashList), 1, "trashList length equal")
err = TrashRemove(ioctx, trashList[0].Id, true)
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestClosedImage(t *testing.T) {
t.Skipf("many of the following functions cause a panic or hang, skip this test")
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
image, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
// keep the rbdImage around after close
rbdImage := image.image
// close the image
err = image.Close()
assert.NoError(t, err)
// restore the image so image.validate() succeeds
image.image = rbdImage
// functions should now fail with an RBDError
err = image.Close()
assert.Error(t, err)
err = image.Resize(1 << 22)
assert.Error(t, err)
_, err = image.Stat()
assert.Error(t, err)
_, err = image.IsOldFormat()
assert.Error(t, err)
_, err = image.GetSize()
assert.Error(t, err)
_, err = image.GetFeatures()
assert.Error(t, err)
_, err = image.GetStripeUnit()
assert.Error(t, err)
_, err = image.GetStripeCount()
assert.Error(t, err)
_, err = image.GetOverlap()
assert.Error(t, err)
err = image.Flatten()
assert.Error(t, err)
_, _, err = image.ListChildren()
assert.Error(t, err)
err = image.Flush()
assert.Error(t, err)
_, err = image.GetSnapshotNames()
assert.Error(t, err)
_, err = image.CreateSnapshot("new_snapshot")
assert.Error(t, err)
_, err = image.GetMetadata("metadata-key")
assert.Error(t, err)
err = image.SetMetadata("metadata-key", "metadata-value")
assert.Error(t, err)
err = image.RemoveMetadata("metadata-key")
assert.Error(t, err)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestOpenImage(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
// pass invalid arguments
_, err = OpenImage(nil, "some-image", NoSnapshot)
require.Error(t, err)
_, err = OpenImage(ioctx, "", NoSnapshot)
require.Error(t, err)
// image does not exist yet
_, err = OpenImage(ioctx, name, NoSnapshot)
assert.Error(t, err)
err = quickCreate(ioctx, name, testImageSize, testImageOrder)
assert.NoError(t, err)
oImage, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
assert.Equal(t, name, oImage.name)
err = oImage.Close()
assert.NoError(t, err)
// open read-only
// pass invalid parameters
_, err = OpenImageReadOnly(nil, "some-image", NoSnapshot)
require.Error(t, err)
_, err = OpenImageReadOnly(ioctx, "", NoSnapshot)
require.Error(t, err)
oImage, err = OpenImageReadOnly(ioctx, name, NoSnapshot)
assert.NoError(t, err)
bytesIn := []byte("input data")
_, err = oImage.Write(bytesIn)
// writing should fail in read-only mode
assert.Error(t, err)
err = oImage.Close()
assert.NoError(t, err)
err = oImage.Remove()
assert.NoError(t, err)
_, err = OpenImageReadOnly(ioctx, name, NoSnapshot)
assert.Error(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestRemoveImage(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
// pass invalid parameters
err = RemoveImage(nil, "some-name")
require.Error(t, err)
err = RemoveImage(ioctx, "")
require.Error(t, err)
// trying to remove a non-existent image is an error
err = RemoveImage(ioctx, "bananarama")
require.Error(t, err)
// create and then remove an image
name := GetUUID()
options := NewRbdImageOptions()
defer options.Destroy()
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
imageNames, err := GetImageNames(ioctx)
assert.NoError(t, err)
assert.Contains(t, imageNames, name)
err = RemoveImage(ioctx, name)
assert.NoError(t, err)
imageNames, err = GetImageNames(ioctx)
assert.NoError(t, err)
assert.NotContains(t, imageNames, name)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestCloneImage(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
imageName := "parent1"
snapName := "snap1"
cloneName := "clone1"
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionOrder, uint64(testImageOrder))
assert.NoError(t, err)
err = options.SetUint64(ImageOptionFeatures, 1)
assert.NoError(t, err)
err = CreateImage(ioctx, imageName, testImageSize, options)
assert.NoError(t, err)
image, err := OpenImage(ioctx, imageName, NoSnapshot)
assert.NoError(t, err)
snapshot, err := image.CreateSnapshot(snapName)
assert.NoError(t, err)
err = snapshot.Protect()
assert.NoError(t, err)
t.Run("cloneImage", func(t *testing.T) {
imageNames, err := GetImageNames(ioctx)
assert.NoError(t, err)
assert.Contains(t, imageNames, imageName)
assert.NotContains(t, imageNames, cloneName)
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionFormat, uint64(2))
assert.NoError(t, err)
err = CloneImage(ioctx, imageName, snapName, ioctx, cloneName, options)
assert.NoError(t, err)
imageNames, err = GetImageNames(ioctx)
assert.NoError(t, err)
assert.Contains(t, imageNames, imageName)
assert.Contains(t, imageNames, cloneName)
err = RemoveImage(ioctx, cloneName)
assert.NoError(t, err)
})
t.Run("cloneFromImage", func(t *testing.T) {
imageNames, err := GetImageNames(ioctx)
assert.NoError(t, err)
assert.Contains(t, imageNames, imageName)
assert.NotContains(t, imageNames, cloneName)
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionFormat, uint64(2))
assert.NoError(t, err)
err = CloneFromImage(image, snapName, ioctx, cloneName, options)
assert.NoError(t, err)
imageNames, err = GetImageNames(ioctx)
assert.NoError(t, err)
assert.Contains(t, imageNames, imageName)
assert.Contains(t, imageNames, cloneName)
err = RemoveImage(ioctx, cloneName)
assert.NoError(t, err)
})
t.Run("cloneFromImageInvalidCtx", func(t *testing.T) {
options := NewRbdImageOptions()
defer options.Destroy()
err = options.SetUint64(ImageOptionFormat, uint64(2))
assert.NoError(t, err)
badImage := GetImage(nil, image.name)
err = CloneFromImage(badImage, snapName, ioctx, cloneName, options)
assert.Error(t, err)
})
t.Run("cloneImageNilOpts", func(t *testing.T) {
err = CloneImage(ioctx, imageName, snapName, ioctx, cloneName, nil)
assert.Error(t, err)
})
err = snapshot.Unprotect()
assert.NoError(t, err)
err = snapshot.Remove()
assert.NoError(t, err)
err = image.Close()
assert.NoError(t, err)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
// quickCreate creates an image similar to Create but uses CreateImage.
// If possible, avoid using this function for new code/tests. It mainly exists
// to help with refactoring of existing tests.
func quickCreate(ioctx *rados.IOContext, name string, size uint64, order int) error {
options := NewRbdImageOptions()
defer options.Destroy()
err := options.SetUint64(ImageOptionOrder, uint64(order))
if err != nil {
return err
}
return CreateImage(ioctx, name, size, options)
}
func TestGetId(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
options := NewRbdImageOptions()
assert.NoError(t,
options.SetUint64(ImageOptionOrder, uint64(testImageOrder)))
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
image, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
id, err := image.GetId()
assert.NoError(t, err)
assert.Greater(t, len(id), 8)
err = image.Close()
assert.NoError(t, err)
id, err = image.GetId()
assert.Error(t, err)
assert.Equal(t, "", id)
err = image.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestGetName(t *testing.T) {
image := Image{
name: "testImg",
}
imgName := image.GetName()
assert.Equal(t, image.name, imgName)
}
func TestOpenImageById(t *testing.T) {
conn := radosConnect(t)
poolname := GetUUID()
err := conn.MakePool(poolname)
assert.NoError(t, err)
ioctx, err := conn.OpenIOContext(poolname)
require.NoError(t, err)
name := GetUUID()
options := NewRbdImageOptions()
assert.NoError(t,
options.SetUint64(ImageOptionOrder, uint64(testImageOrder)))
err = CreateImage(ioctx, name, testImageSize, options)
assert.NoError(t, err)
workingImage, err := OpenImage(ioctx, name, NoSnapshot)
assert.NoError(t, err)
id, err := workingImage.GetId()
assert.NoError(t, err)
err = workingImage.Close()
assert.NoError(t, err)
t.Run("InvalidArguments", func(t *testing.T) {
_, err = OpenImageById(nil, "some-id", NoSnapshot)
require.Error(t, err)
_, err = OpenImageById(ioctx, "", NoSnapshot)
require.Error(t, err)
_, err = OpenImageByIdReadOnly(nil, "some-id", NoSnapshot)
require.Error(t, err)
_, err = OpenImageByIdReadOnly(ioctx, "", NoSnapshot)
require.Error(t, err)
})
t.Run("ReadWriteBadId", func(t *testing.T) {
// phony id
img, err := OpenImageById(ioctx, "102f00aaabbbccd", NoSnapshot)
require.Error(t, err)
require.Nil(t, img)
})
t.Run("ReadOnlyBadId", func(t *testing.T) {
// phony id
img, err := OpenImageByIdReadOnly(ioctx, "blubb", NoSnapshot)
require.Error(t, err)
require.Nil(t, img)
})
t.Run("ReadWrite", func(t *testing.T) {
img, err := OpenImageById(ioctx, id, NoSnapshot)
require.NoError(t, err)
require.NotNil(t, img)
defer func() { assert.NoError(t, img.Close()) }()
data := []byte("input data")
_, err = img.Write(data)
assert.NoError(t, err)
})
t.Run("ReadOnly", func(t *testing.T) {
img, err := OpenImageByIdReadOnly(ioctx, id, NoSnapshot)
require.NoError(t, err)
require.NotNil(t, img)
defer func() { assert.NoError(t, img.Close()) }()
data := []byte("input data")
_, err = img.Write(data)
// writing should fail in read-only mode
assert.Error(t, err)
})
t.Run("Snapshot", func(t *testing.T) {
img, err := OpenImageById(ioctx, id, NoSnapshot)
require.NoError(t, err)
require.NotNil(t, img)
defer func() { assert.NoError(t, img.Close()) }()
snapshot, err := img.CreateSnapshot("snerpshort")
assert.NoError(t, err)
defer func() { assert.NoError(t, snapshot.Remove()) }()
snapImage, err := OpenImageById(ioctx, id, "snerpshort")
require.NoError(t, err)
require.NotNil(t, snapImage)
assert.NoError(t, snapImage.Close())
})
t.Run("ReadOnlySnapshot", func(t *testing.T) {
img, err := OpenImageById(ioctx, id, NoSnapshot)
require.NoError(t, err)
require.NotNil(t, img)
defer func() { assert.NoError(t, img.Close()) }()
snapshot, err := img.CreateSnapshot("snerpshort2")
assert.NoError(t, err)
defer func() { assert.NoError(t, snapshot.Remove()) }()
snapImage, err := OpenImageByIdReadOnly(ioctx, id, "snerpshort2")
require.NoError(t, err)
require.NotNil(t, snapImage)
assert.NoError(t, snapImage.Close())
})
err = workingImage.Remove()
assert.NoError(t, err)
ioctx.Destroy()
conn.DeletePool(poolname)
conn.Shutdown()
}
func TestRadosIoctxInvalid(t *testing.T) {
// ensure cephIoctx panics if passed a nil pointer
assert.Panics(t, func() {
_ = cephIoctx(nil)
})
// test that an invalid/incomplete (no actual backing C ioctx) will
// trigger a panic in cephIoctx when called.
ioctx := &rados.IOContext{}
assert.Panics(t, func() {
_ = cephIoctx(ioctx)
})
}