// 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 . package cmd import ( "bytes" "context" "crypto/rand" "io" "testing" humanize "github.com/dustin/go-humanize" ) type badDisk struct{ StorageAPI } func (a badDisk) String() string { return "bad-disk" } func (a badDisk) AppendFile(ctx context.Context, volume string, path string, buf []byte) error { return errFaultyDisk } func (a badDisk) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) { return nil, errFaultyDisk } func (a badDisk) UpdateBloomFilter(ctx context.Context, oldest, current uint64) (*bloomFilterResponse, error) { return nil, errFaultyDisk } func (a badDisk) CreateFile(ctx context.Context, volume, path string, size int64, reader io.Reader) error { return errFaultyDisk } func (badDisk) Hostname() string { return "" } const oneMiByte = 1 * humanize.MiByte var erasureEncodeTests = []struct { dataBlocks int onDisks, offDisks int blocksize, data int64 offset int algorithm BitrotAlgorithm shouldFail, shouldFailQuorum bool }{ {dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false}, // 0 {dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 1, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false}, // 1 {dataBlocks: 4, onDisks: 8, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 2 {dataBlocks: 5, onDisks: 10, offDisks: 3, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false}, // 3 {dataBlocks: 6, onDisks: 12, offDisks: 4, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false}, // 4 {dataBlocks: 7, onDisks: 14, offDisks: 5, blocksize: int64(blockSizeV2), data: 0, offset: 0, shouldFail: false, algorithm: SHA256, shouldFailQuorum: false}, // 5 {dataBlocks: 8, onDisks: 16, offDisks: 7, blocksize: int64(blockSizeV2), data: 0, offset: 0, shouldFail: false, algorithm: DefaultBitrotAlgorithm, shouldFailQuorum: false}, // 6 {dataBlocks: 2, onDisks: 4, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: true}, // 7 {dataBlocks: 4, onDisks: 8, offDisks: 4, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: SHA256, shouldFail: false, shouldFailQuorum: true}, // 8 {dataBlocks: 7, onDisks: 14, offDisks: 7, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true}, // 9 {dataBlocks: 8, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true}, // 10 {dataBlocks: 5, onDisks: 10, offDisks: 3, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 11 {dataBlocks: 3, onDisks: 6, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte / 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 12 {dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(oneMiByte / 2), data: oneMiByte, offset: oneMiByte/2 + 1, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 13 {dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(oneMiByte - 1), data: oneMiByte, offset: oneMiByte - 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false}, // 14 {dataBlocks: 8, onDisks: 12, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 15 {dataBlocks: 8, onDisks: 10, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 16 {dataBlocks: 10, onDisks: 14, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 17, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 17 {dataBlocks: 2, onDisks: 6, offDisks: 2, blocksize: int64(oneMiByte), data: oneMiByte, offset: oneMiByte / 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 18 {dataBlocks: 10, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true}, // 19 } func TestErasureEncode(t *testing.T) { for i, test := range erasureEncodeTests { setup, err := newErasureTestSetup(test.dataBlocks, test.onDisks-test.dataBlocks, test.blocksize) if err != nil { t.Fatalf("Test %d: failed to create test setup: %v", i, err) } disks := setup.disks erasure, err := NewErasure(context.Background(), test.dataBlocks, test.onDisks-test.dataBlocks, test.blocksize) if err != nil { setup.Remove() t.Fatalf("Test %d: failed to create ErasureStorage: %v", i, err) } buffer := make([]byte, test.blocksize, 2*test.blocksize) data := make([]byte, test.data) if _, err = io.ReadFull(rand.Reader, data); err != nil { setup.Remove() t.Fatalf("Test %d: failed to generate random test data: %v", i, err) } writers := make([]io.Writer, len(disks)) for i, disk := range disks { if disk == OfflineDisk { continue } writers[i] = newBitrotWriter(disk, "testbucket", "object", erasure.ShardFileSize(int64(len(data[test.offset:]))), test.algorithm, erasure.ShardSize()) } n, err := erasure.Encode(context.Background(), bytes.NewReader(data[test.offset:]), writers, buffer, erasure.dataBlocks+1) closeBitrotWriters(writers) if err != nil && !test.shouldFail { t.Errorf("Test %d: should pass but failed with: %v", i, err) } if err == nil && test.shouldFail { t.Errorf("Test %d: should fail but it passed", i) } for i, w := range writers { if w == nil { disks[i] = OfflineDisk } } if err == nil { if length := int64(len(data[test.offset:])); n != length { t.Errorf("Test %d: invalid number of bytes written: got: #%d want #%d", i, n, length) } writers := make([]io.Writer, len(disks)) for i, disk := range disks { if disk == nil { continue } writers[i] = newBitrotWriter(disk, "testbucket", "object2", erasure.ShardFileSize(int64(len(data[test.offset:]))), test.algorithm, erasure.ShardSize()) } for j := range disks[:test.offDisks] { switch w := writers[j].(type) { case *wholeBitrotWriter: w.disk = badDisk{nil} case *streamingBitrotWriter: w.closeWithErr(errFaultyDisk) } } if test.offDisks > 0 { writers[0] = nil } n, err = erasure.Encode(context.Background(), bytes.NewReader(data[test.offset:]), writers, buffer, erasure.dataBlocks+1) closeBitrotWriters(writers) if err != nil && !test.shouldFailQuorum { t.Errorf("Test %d: should pass but failed with: %v", i, err) } if err == nil && test.shouldFailQuorum { t.Errorf("Test %d: should fail but it passed", i) } if err == nil { if length := int64(len(data[test.offset:])); n != length { t.Errorf("Test %d: invalid number of bytes written: got: #%d want #%d", i, n, length) } } } setup.Remove() } } // Benchmarks func benchmarkErasureEncode(data, parity, dataDown, parityDown int, size int64, b *testing.B) { setup, err := newErasureTestSetup(data, parity, blockSizeV2) if err != nil { b.Fatalf("failed to create test setup: %v", err) } defer setup.Remove() erasure, err := NewErasure(context.Background(), data, parity, blockSizeV2) if err != nil { b.Fatalf("failed to create ErasureStorage: %v", err) } disks := setup.disks buffer := make([]byte, blockSizeV2, 2*blockSizeV2) content := make([]byte, size) for i := 0; i < dataDown; i++ { disks[i] = OfflineDisk } for i := data; i < data+parityDown; i++ { disks[i] = OfflineDisk } b.ResetTimer() b.SetBytes(size) b.ReportAllocs() for i := 0; i < b.N; i++ { writers := make([]io.Writer, len(disks)) for i, disk := range disks { if disk == OfflineDisk { continue } disk.Delete(context.Background(), "testbucket", "object", false) writers[i] = newBitrotWriter(disk, "testbucket", "object", erasure.ShardFileSize(size), DefaultBitrotAlgorithm, erasure.ShardSize()) } _, err := erasure.Encode(context.Background(), bytes.NewReader(content), writers, buffer, erasure.dataBlocks+1) closeBitrotWriters(writers) if err != nil { panic(err) } } } func BenchmarkErasureEncodeQuick(b *testing.B) { const size = 12 * 1024 * 1024 b.Run(" 00|00 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 0, 0, size, b) }) b.Run(" 00|X0 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 0, 1, size, b) }) b.Run(" X0|00 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 1, 0, size, b) }) } func BenchmarkErasureEncode_4_64KB(b *testing.B) { const size = 64 * 1024 b.Run(" 00|00 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 0, 0, size, b) }) b.Run(" 00|X0 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 0, 1, size, b) }) b.Run(" X0|00 ", func(b *testing.B) { benchmarkErasureEncode(2, 2, 1, 0, size, b) }) } func BenchmarkErasureEncode_8_20MB(b *testing.B) { const size = 20 * 1024 * 1024 b.Run(" 0000|0000 ", func(b *testing.B) { benchmarkErasureEncode(4, 4, 0, 0, size, b) }) b.Run(" 0000|X000 ", func(b *testing.B) { benchmarkErasureEncode(4, 4, 0, 1, size, b) }) b.Run(" X000|0000 ", func(b *testing.B) { benchmarkErasureEncode(4, 4, 1, 0, size, b) }) b.Run(" 0000|XXX0 ", func(b *testing.B) { benchmarkErasureEncode(4, 4, 0, 3, size, b) }) b.Run(" XXX0|0000 ", func(b *testing.B) { benchmarkErasureEncode(4, 4, 3, 0, size, b) }) } func BenchmarkErasureEncode_12_30MB(b *testing.B) { const size = 30 * 1024 * 1024 b.Run(" 000000|000000 ", func(b *testing.B) { benchmarkErasureEncode(6, 6, 0, 0, size, b) }) b.Run(" 000000|X00000 ", func(b *testing.B) { benchmarkErasureEncode(6, 6, 0, 1, size, b) }) b.Run(" X00000|000000 ", func(b *testing.B) { benchmarkErasureEncode(6, 6, 1, 0, size, b) }) b.Run(" 000000|XXXXX0 ", func(b *testing.B) { benchmarkErasureEncode(6, 6, 0, 5, size, b) }) b.Run(" XXXXX0|000000 ", func(b *testing.B) { benchmarkErasureEncode(6, 6, 5, 0, size, b) }) } func BenchmarkErasureEncode_16_40MB(b *testing.B) { const size = 40 * 1024 * 1024 b.Run(" 00000000|00000000 ", func(b *testing.B) { benchmarkErasureEncode(8, 8, 0, 0, size, b) }) b.Run(" 00000000|X0000000 ", func(b *testing.B) { benchmarkErasureEncode(8, 8, 0, 1, size, b) }) b.Run(" X0000000|00000000 ", func(b *testing.B) { benchmarkErasureEncode(8, 8, 1, 0, size, b) }) b.Run(" 00000000|XXXXXXX0 ", func(b *testing.B) { benchmarkErasureEncode(8, 8, 0, 7, size, b) }) b.Run(" XXXXXXX0|00000000 ", func(b *testing.B) { benchmarkErasureEncode(8, 8, 7, 0, size, b) }) }