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minio/erasure-createfile_test.go

97 lines
2.9 KiB

/*
* Minio Cloud Storage, (C) 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"bytes"
"crypto/rand"
"testing"
)
// Simulates a faulty disk for AppendFile()
type AppendDiskDown struct {
*posix
}
func (a AppendDiskDown) AppendFile(volume string, path string, buf []byte) error {
return errFaultyDisk
}
// Test erasureCreateFile()
func TestErasureCreateFile(t *testing.T) {
// Initialize environment needed for the test.
dataBlocks := 7
parityBlocks := 7
blockSize := int64(blockSizeV1)
setup, err := newErasureTestSetup(dataBlocks, parityBlocks, blockSize)
if err != nil {
t.Error(err)
return
}
defer setup.Remove()
disks := setup.disks
// Prepare a slice of 1MB with random data.
data := make([]byte, 1*1024*1024)
_, err = rand.Read(data)
if err != nil {
t.Fatal(err)
}
// Test when all disks are up.
size, _, err := erasureCreateFile(disks, "testbucket", "testobject1", bytes.NewReader(data), blockSize, dataBlocks, parityBlocks, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
if size != int64(len(data)) {
t.Errorf("erasureCreateFile returned %d, expected %d", size, len(data))
}
// 2 disks down.
disks[4] = AppendDiskDown{disks[4].(*posix)}
disks[5] = AppendDiskDown{disks[5].(*posix)}
// Test when two disks are down.
size, _, err = erasureCreateFile(disks, "testbucket", "testobject2", bytes.NewReader(data), blockSize, dataBlocks, parityBlocks, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
if size != int64(len(data)) {
t.Errorf("erasureCreateFile returned %d, expected %d", size, len(data))
}
// 4 more disks down. 6 disks down in total.
disks[6] = AppendDiskDown{disks[6].(*posix)}
disks[7] = AppendDiskDown{disks[7].(*posix)}
disks[8] = AppendDiskDown{disks[8].(*posix)}
disks[9] = AppendDiskDown{disks[9].(*posix)}
size, _, err = erasureCreateFile(disks, "testbucket", "testobject3", bytes.NewReader(data), blockSize, dataBlocks, parityBlocks, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
if size != int64(len(data)) {
t.Errorf("erasureCreateFile returned %d, expected %d", size, len(data))
}
// 1 more disk down. 7 disk down in total. Should return quorum error.
disks[10] = AppendDiskDown{disks[10].(*posix)}
size, _, err = erasureCreateFile(disks, "testbucket", "testobject4", bytes.NewReader(data), blockSize, dataBlocks, parityBlocks, dataBlocks+1)
if err != errXLWriteQuorum {
t.Error("Expected errXLWriteQuorum error")
}
}