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/*
* MinIO Cloud Storage, (C) 2018 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 cmd
import (
"encoding/json"
"io/ioutil"
"os"
"reflect"
"testing"
)
// Test get offline/online uuids.
func TestGetUUIDs(t *testing.T) {
fmtV2 := newFormatXLV3(4, 16)
formats := make([]*formatXLV3, 64)
for i := 0; i < 4; i++ {
for j := 0; j < 16; j++ {
newFormat := *fmtV2
newFormat.XL.This = fmtV2.XL.Sets[i][j]
formats[i*16+j] = &newFormat
}
}
gotCount := len(getOnlineUUIDs(fmtV2, formats))
if gotCount != 64 {
t.Errorf("Expected online count '64', got '%d'", gotCount)
}
for i := 0; i < 4; i++ {
for j := 0; j < 16; j++ {
if j < 4 {
formats[i*16+j] = nil
}
}
}
gotCount = len(getOnlineUUIDs(fmtV2, formats))
if gotCount != 48 {
t.Errorf("Expected online count '48', got '%d'", gotCount)
}
gotCount = len(getOfflineUUIDs(fmtV2, formats))
if gotCount != 16 {
t.Errorf("Expected offline count '16', got '%d'", gotCount)
}
markUUIDsOffline(fmtV2, formats)
gotCount = 0
for i := range fmtV2.XL.Sets {
for j := range fmtV2.XL.Sets[i] {
if fmtV2.XL.Sets[i][j] == offlineDiskUUID {
gotCount++
}
}
}
if gotCount != 16 {
t.Errorf("Expected offline count '16', got '%d'", gotCount)
}
}
// tests fixFormatXLV3 - fix format.json on all disks.
func TestFixFormatV3(t *testing.T) {
xlDirs, err := getRandomDisks(8)
if err != nil {
t.Fatal(err)
}
for _, xlDir := range xlDirs {
defer os.RemoveAll(xlDir)
}
endpoints := mustGetNewEndpoints(xlDirs...)
storageDisks, errs := initStorageDisksWithErrors(endpoints)
for _, err := range errs {
if err != nil && err != errDiskNotFound {
t.Fatal(err)
}
}
format := newFormatXLV3(1, 8)
formats := make([]*formatXLV3, 8)
for j := 0; j < 8; j++ {
newFormat := format.Clone()
newFormat.XL.This = format.XL.Sets[0][j]
formats[j] = newFormat
}
if err = initXLMetaVolumesInLocalDisks(storageDisks, formats); err != nil {
t.Fatal(err)
}
formats[1] = nil
expThis := formats[2].XL.This
formats[2].XL.This = ""
if err := fixFormatXLV3(storageDisks, endpoints, formats); err != nil {
t.Fatal(err)
}
newFormats, errs := loadFormatXLAll(storageDisks)
for _, err := range errs {
if err != nil && err != errUnformattedDisk {
t.Fatal(err)
}
}
gotThis := newFormats[2].XL.This
if expThis != gotThis {
t.Fatalf("expected uuid %s, got %s", expThis, gotThis)
}
}
// tests formatXLV3ThisEmpty conditions.
func TestFormatXLEmpty(t *testing.T) {
format := newFormatXLV3(1, 16)
formats := make([]*formatXLV3, 16)
for j := 0; j < 16; j++ {
newFormat := format.Clone()
newFormat.XL.This = format.XL.Sets[0][j]
formats[j] = newFormat
}
// empty format to indicate disk not found, but this
// empty should return false.
formats[0] = nil
if ok := formatXLV3ThisEmpty(formats); ok {
t.Fatalf("expected value false, got %t", ok)
}
formats[2].XL.This = ""
if ok := formatXLV3ThisEmpty(formats); !ok {
t.Fatalf("expected value true, got %t", ok)
}
}
// Tests xl format migration.
func TestFormatXLMigrate(t *testing.T) {
// Get test root.
rootPath, err := getTestRoot()
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(rootPath)
m := &formatXLV1{}
m.Format = formatBackendXL
m.Version = formatMetaVersionV1
m.XL.Version = formatXLVersionV1
m.XL.Disk = mustGetUUID()
m.XL.JBOD = []string{m.XL.Disk, mustGetUUID(), mustGetUUID(), mustGetUUID()}
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
if err = os.MkdirAll(pathJoin(rootPath, minioMetaBucket), os.FileMode(0755)); err != nil {
t.Fatal(err)
}
if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
t.Fatal(err)
}
if err = formatXLMigrate(rootPath); err != nil {
t.Fatal(err)
}
migratedVersion, err := formatGetBackendXLVersion(pathJoin(rootPath, minioMetaBucket, formatConfigFile))
if err != nil {
t.Fatal(err)
}
if migratedVersion != formatXLVersionV3 {
t.Fatalf("expected version: %s, got: %s", formatXLVersionV3, migratedVersion)
}
b, err = ioutil.ReadFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile))
if err != nil {
t.Fatal(err)
}
formatV3 := &formatXLV3{}
if err = json.Unmarshal(b, formatV3); err != nil {
t.Fatal(err)
}
if formatV3.XL.This != m.XL.Disk {
t.Fatalf("expected disk uuid: %s, got: %s", m.XL.Disk, formatV3.XL.This)
}
if len(formatV3.XL.Sets) != 1 {
t.Fatalf("expected single set after migrating from v1 to v3, but found %d", len(formatV3.XL.Sets))
}
if !reflect.DeepEqual(formatV3.XL.Sets[0], m.XL.JBOD) {
t.Fatalf("expected disk uuid: %v, got: %v", m.XL.JBOD, formatV3.XL.Sets[0])
}
m = &formatXLV1{}
m.Format = "unknown"
m.Version = formatMetaVersionV1
m.XL.Version = formatXLVersionV1
m.XL.Disk = mustGetUUID()
m.XL.JBOD = []string{m.XL.Disk, mustGetUUID(), mustGetUUID(), mustGetUUID()}
b, err = json.Marshal(m)
if err != nil {
t.Fatal(err)
}
if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
t.Fatal(err)
}
if err = formatXLMigrate(rootPath); err == nil {
t.Fatal("Expected to fail with unexpected backend format")
}
m = &formatXLV1{}
m.Format = formatBackendXL
m.Version = formatMetaVersionV1
m.XL.Version = "30"
m.XL.Disk = mustGetUUID()
m.XL.JBOD = []string{m.XL.Disk, mustGetUUID(), mustGetUUID(), mustGetUUID()}
b, err = json.Marshal(m)
if err != nil {
t.Fatal(err)
}
if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
t.Fatal(err)
}
if err = formatXLMigrate(rootPath); err == nil {
t.Fatal("Expected to fail with unexpected backend format version number")
}
}
// Tests check format xl value.
func TestCheckFormatXLValue(t *testing.T) {
testCases := []struct {
format *formatXLV3
success bool
}{
// Invalid XL format version "2".
{
&formatXLV3{
formatMetaV1: formatMetaV1{
Version: "2",
Format: "XL",
},
XL: struct {
Version string `json:"version"`
This string `json:"this"`
Sets [][]string `json:"sets"`
DistributionAlgo string `json:"distributionAlgo"`
}{
Version: "2",
},
},
false,
},
// Invalid XL format "Unknown".
{
&formatXLV3{
formatMetaV1: formatMetaV1{
Version: "1",
Format: "Unknown",
},
XL: struct {
Version string `json:"version"`
This string `json:"this"`
Sets [][]string `json:"sets"`
DistributionAlgo string `json:"distributionAlgo"`
}{
Version: "2",
},
},
false,
},
// Invalid XL format version "0".
{
&formatXLV3{
formatMetaV1: formatMetaV1{
Version: "1",
Format: "XL",
},
XL: struct {
Version string `json:"version"`
This string `json:"this"`
Sets [][]string `json:"sets"`
DistributionAlgo string `json:"distributionAlgo"`
}{
Version: "0",
},
},
false,
},
}
// Valid all test cases.
for i, testCase := range testCases {
if err := checkFormatXLValue(testCase.format); err != nil && testCase.success {
t.Errorf("Test %d: Expected failure %s", i+1, err)
}
}
}
// Tests getFormatXLInQuorum()
func TestGetFormatXLInQuorumCheck(t *testing.T) {
setCount := 2
drivesPerSet := 16
format := newFormatXLV3(setCount, drivesPerSet)
formats := make([]*formatXLV3, 32)
for i := 0; i < setCount; i++ {
for j := 0; j < drivesPerSet; j++ {
newFormat := format.Clone()
newFormat.XL.This = format.XL.Sets[i][j]
formats[i*drivesPerSet+j] = newFormat
}
}
// Return a format from list of formats in quorum.
quorumFormat, err := getFormatXLInQuorum(formats)
if err != nil {
t.Fatal(err)
}
// Check if the reference format and input formats are same.
if err = formatXLV3Check(quorumFormat, formats[0]); err != nil {
t.Fatal(err)
}
// QuorumFormat has .This field empty on purpose, expect a failure.
if err = formatXLV3Check(formats[0], quorumFormat); err == nil {
t.Fatal("Unexpected success")
}
formats[0] = nil
quorumFormat, err = getFormatXLInQuorum(formats)
if err != nil {
t.Fatal(err)
}
badFormat := *quorumFormat
badFormat.XL.Sets = nil
if err = formatXLV3Check(quorumFormat, &badFormat); err == nil {
t.Fatal("Unexpected success")
}
badFormatUUID := *quorumFormat
badFormatUUID.XL.Sets[0][0] = "bad-uuid"
if err = formatXLV3Check(quorumFormat, &badFormatUUID); err == nil {
t.Fatal("Unexpected success")
}
badFormatSetSize := *quorumFormat
badFormatSetSize.XL.Sets[0] = nil
if err = formatXLV3Check(quorumFormat, &badFormatSetSize); err == nil {
t.Fatal("Unexpected success")
}
for i := range formats {
if i < 17 {
formats[i] = nil
}
}
if _, err = getFormatXLInQuorum(formats); err == nil {
t.Fatal("Unexpected success")
}
}
// Tests formatXLGetDeploymentID()
func TestGetXLID(t *testing.T) {
setCount := 2
drivesPerSet := 8
format := newFormatXLV3(setCount, drivesPerSet)
formats := make([]*formatXLV3, 16)
for i := 0; i < setCount; i++ {
for j := 0; j < drivesPerSet; j++ {
newFormat := format.Clone()
newFormat.XL.This = format.XL.Sets[i][j]
formats[i*drivesPerSet+j] = newFormat
}
}
// Return a format from list of formats in quorum.
quorumFormat, err := getFormatXLInQuorum(formats)
if err != nil {
t.Fatal(err)
}
// Check if the reference format and input formats are same.
var id string
if id, err = formatXLGetDeploymentID(quorumFormat, formats); err != nil {
t.Fatal(err)
}
if id == "" {
t.Fatal("ID cannot be empty.")
}
formats[0] = nil
if id, err = formatXLGetDeploymentID(quorumFormat, formats); err != nil {
t.Fatal(err)
}
if id == "" {
t.Fatal("ID cannot be empty.")
}
formats[1].XL.Sets[0][0] = "bad-uuid"
if id, err = formatXLGetDeploymentID(quorumFormat, formats); err != nil {
t.Fatal(err)
}
if id == "" {
t.Fatal("ID cannot be empty.")
}
formats[2].ID = "bad-id"
if _, err = formatXLGetDeploymentID(quorumFormat, formats); err != errCorruptedFormat {
t.Fatal("Unexpected Success")
}
}
// Initialize new format sets.
func TestNewFormatSets(t *testing.T) {
setCount := 2
drivesPerSet := 16
format := newFormatXLV3(setCount, drivesPerSet)
formats := make([]*formatXLV3, 32)
errs := make([]error, 32)
for i := 0; i < setCount; i++ {
for j := 0; j < drivesPerSet; j++ {
newFormat := format.Clone()
newFormat.XL.This = format.XL.Sets[i][j]
formats[i*drivesPerSet+j] = newFormat
}
}
quorumFormat, err := getFormatXLInQuorum(formats)
if err != nil {
t.Fatal(err)
}
// 16th disk is unformatted.
errs[15] = errUnformattedDisk
newFormats := newHealFormatSets(quorumFormat, setCount, drivesPerSet, formats, errs)
if newFormats == nil {
t.Fatal("Unexpected failure")
}
// Check if deployment IDs are preserved.
for i := range newFormats {
for j := range newFormats[i] {
if newFormats[i][j].ID != quorumFormat.ID {
t.Fatal("Deployment id in the new format is lost")
}
}
}
}
func BenchmarkInitStorageDisks256(b *testing.B) {
benchmarkInitStorageDisksN(b, 256)
}
func BenchmarkInitStorageDisks1024(b *testing.B) {
benchmarkInitStorageDisksN(b, 1024)
}
func BenchmarkInitStorageDisks2048(b *testing.B) {
benchmarkInitStorageDisksN(b, 2048)
}
func BenchmarkInitStorageDisksMax(b *testing.B) {
benchmarkInitStorageDisksN(b, 32*204)
}
func benchmarkInitStorageDisksN(b *testing.B, nDisks int) {
b.ResetTimer()
b.ReportAllocs()
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
b.Fatal(err)
}
endpoints := mustGetNewEndpoints(fsDirs...)
b.RunParallel(func(pb *testing.PB) {
endpoints := endpoints
for pb.Next() {
initStorageDisksWithErrors(endpoints)
}
})
}