minio/internal/config/storageclass/storage-class_test.go
Harshavardhana 9c605ad153
allow support for parity '0', '1' enabling support for 2,3 drive setups (#15171)
allows for further granular setups

- 2 drives (1 parity, 1 data)
- 3 drives (1 parity, 2 data)

Bonus: allows '0' parity as well.
2022-06-27 20:22:18 -07:00

190 lines
4.3 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package storageclass
import (
"errors"
"reflect"
"testing"
)
func TestParseStorageClass(t *testing.T) {
tests := []struct {
storageClassEnv string
wantSc StorageClass
expectedError error
}{
{
"EC:3",
StorageClass{
Parity: 3,
},
nil,
},
{
"EC:4",
StorageClass{
Parity: 4,
},
nil,
},
{
"AB:4",
StorageClass{
Parity: 4,
},
errors.New("Unsupported scheme AB. Supported scheme is EC"),
},
{
"EC:4:5",
StorageClass{
Parity: 4,
},
errors.New("Too many sections in EC:4:5"),
},
{
"EC:A",
StorageClass{
Parity: 4,
},
errors.New(`strconv.Atoi: parsing "A": invalid syntax`),
},
{
"AB",
StorageClass{
Parity: 4,
},
errors.New("Too few sections in AB"),
},
}
for i, tt := range tests {
gotSc, err := parseStorageClass(tt.storageClassEnv)
if err != nil && tt.expectedError == nil {
t.Errorf("Test %d, Expected %s, got %s", i+1, tt.expectedError, err)
return
}
if err == nil && tt.expectedError != nil {
t.Errorf("Test %d, Expected %s, got %s", i+1, tt.expectedError, err)
return
}
if tt.expectedError == nil && !reflect.DeepEqual(gotSc, tt.wantSc) {
t.Errorf("Test %d, Expected %v, got %v", i+1, tt.wantSc, gotSc)
return
}
if tt.expectedError != nil && err.Error() != tt.expectedError.Error() {
t.Errorf("Test %d, Expected `%v`, got `%v`", i+1, tt.expectedError, err)
}
}
}
func TestValidateParity(t *testing.T) {
tests := []struct {
rrsParity int
ssParity int
success bool
setDriveCount int
}{
{2, 4, true, 16},
{3, 3, true, 16},
{0, 0, true, 16},
{1, 4, true, 16},
{0, 4, true, 16},
{7, 6, false, 16},
{9, 0, false, 16},
{9, 9, false, 16},
{2, 9, false, 16},
{9, 2, false, 16},
}
for i, tt := range tests {
err := validateParity(tt.ssParity, tt.rrsParity, tt.setDriveCount)
if err != nil && tt.success {
t.Errorf("Test %d, Expected success, got %s", i+1, err)
}
if err == nil && !tt.success {
t.Errorf("Test %d, Expected failure, got success", i+1)
}
}
}
func TestParityCount(t *testing.T) {
tests := []struct {
sc string
disksCount int
expectedData int
expectedParity int
}{
{RRS, 16, 14, 2},
{STANDARD, 16, 8, 8},
{"", 16, 8, 8},
{RRS, 16, 9, 7},
{STANDARD, 16, 10, 6},
{"", 16, 9, 7},
}
for i, tt := range tests {
scfg := Config{
Standard: StorageClass{
Parity: 8,
},
RRS: StorageClass{
Parity: 2,
},
}
// Set env var for test case 4
if i+1 == 4 {
scfg.RRS.Parity = 7
}
// Set env var for test case 5
if i+1 == 5 {
scfg.Standard.Parity = 6
}
// Set env var for test case 6
if i+1 == 6 {
scfg.Standard.Parity = 7
}
parity := scfg.GetParityForSC(tt.sc)
if (tt.disksCount - parity) != tt.expectedData {
t.Errorf("Test %d, Expected data disks %d, got %d", i+1, tt.expectedData, tt.disksCount-parity)
continue
}
if parity != tt.expectedParity {
t.Errorf("Test %d, Expected parity disks %d, got %d", i+1, tt.expectedParity, parity)
}
}
}
// Test IsValid method with valid and invalid inputs
func TestIsValidStorageClassKind(t *testing.T) {
tests := []struct {
sc string
want bool
}{
{"STANDARD", true},
{"REDUCED_REDUNDANCY", true},
{"", false},
{"INVALID", false},
{"123", false},
{"MINIO_STORAGE_CLASS_RRS", false},
{"MINIO_STORAGE_CLASS_STANDARD", false},
}
for i, tt := range tests {
if got := IsValid(tt.sc); got != tt.want {
t.Errorf("Test %d, Expected Storage Class to be %t, got %t", i+1, tt.want, got)
}
}
}