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S3: Fix encrypted file copy with multiple chunks (#7530)
S3: Fix encrypted file copy with multiple chunks (#7530)
When copying encrypted files with multiple chunks (encrypted volumes via -filer.encryptVolumeData), the copied file could not be read. This was caused by the chunk copy operation not preserving the IsCompressed flag, which led to improper handling of compressed/encrypted data during upload. The fix: 1. Modified uploadChunkData to accept an isCompressed parameter 2. Updated copySingleChunk to pass the source chunk's IsCompressed flag 3. Updated copySingleChunkForRange for partial copy operations 4. Updated all other callers to pass the appropriate compression flag 5. Added comprehensive tests for encrypted volume copy scenarios This ensures that when copying chunks: - The IsCompressed flag from the source chunk is passed to the upload - Compressed data is marked as compressed, preventing double-compression - Already-encrypted data is not re-encrypted (Cipher: false is correct) - All chunk metadata (CipherKey, IsCompressed, ETag) is preserved Tests added: - TestCreateDestinationChunkPreservesEncryption: Verifies metadata preservation - TestCopySingleChunkWithEncryption: Tests various encryption/compression scenarios - TestCopyChunksPreservesMetadata: Tests multi-chunk metadata preservation - TestEncryptedVolumeScenario: Documents and tests the exact issue #7530 scenario Fixes #7530pull/7546/head
Chris Lu
1 week ago
4 changed files with 398 additions and 13 deletions
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384weed/s3api/s3api_encrypted_volume_copy_test.go
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4weed/s3api/s3api_key_rotation.go
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21weed/s3api/s3api_object_handlers_copy.go
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2weed/s3api/s3api_streaming_copy.go
@ -0,0 +1,384 @@ |
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package s3api |
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|
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import ( |
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"bytes" |
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"testing" |
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|
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb" |
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"github.com/seaweedfs/seaweedfs/weed/util" |
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) |
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|
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// TestCreateDestinationChunkPreservesEncryption tests that createDestinationChunk preserves CipherKey and IsCompressed
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func TestCreateDestinationChunkPreservesEncryption(t *testing.T) { |
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s3a := &S3ApiServer{} |
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|
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testCases := []struct { |
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name string |
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sourceChunk *filer_pb.FileChunk |
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expectedOffset int64 |
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expectedSize uint64 |
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shouldPreserveCK bool |
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shouldPreserveIC bool |
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}{ |
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{ |
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name: "Encrypted and compressed chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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Offset: 0, |
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Size: 1024, |
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CipherKey: []byte("test-cipher-key-1234567890123456"), |
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IsCompressed: true, |
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ETag: "test-etag", |
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}, |
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expectedOffset: 0, |
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expectedSize: 1024, |
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shouldPreserveCK: true, |
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shouldPreserveIC: true, |
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}, |
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{ |
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name: "Only encrypted chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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Offset: 1024, |
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Size: 2048, |
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CipherKey: []byte("test-cipher-key-1234567890123456"), |
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IsCompressed: false, |
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ETag: "test-etag-2", |
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}, |
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expectedOffset: 1024, |
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expectedSize: 2048, |
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shouldPreserveCK: true, |
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shouldPreserveIC: false, |
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}, |
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{ |
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name: "Only compressed chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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Offset: 2048, |
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Size: 512, |
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CipherKey: nil, |
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IsCompressed: true, |
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ETag: "test-etag-3", |
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}, |
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expectedOffset: 2048, |
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expectedSize: 512, |
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shouldPreserveCK: false, |
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shouldPreserveIC: true, |
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}, |
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{ |
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name: "Unencrypted and uncompressed chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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Offset: 4096, |
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Size: 1024, |
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CipherKey: nil, |
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IsCompressed: false, |
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ETag: "test-etag-4", |
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}, |
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expectedOffset: 4096, |
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expectedSize: 1024, |
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shouldPreserveCK: false, |
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shouldPreserveIC: false, |
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}, |
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} |
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|
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for _, tc := range testCases { |
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t.Run(tc.name, func(t *testing.T) { |
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dstChunk := s3a.createDestinationChunk(tc.sourceChunk, tc.expectedOffset, tc.expectedSize) |
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// Verify offset and size
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if dstChunk.Offset != tc.expectedOffset { |
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t.Errorf("Expected offset %d, got %d", tc.expectedOffset, dstChunk.Offset) |
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} |
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if dstChunk.Size != tc.expectedSize { |
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t.Errorf("Expected size %d, got %d", tc.expectedSize, dstChunk.Size) |
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} |
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|
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// Verify CipherKey preservation
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if tc.shouldPreserveCK { |
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if !bytes.Equal(dstChunk.CipherKey, tc.sourceChunk.CipherKey) { |
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t.Errorf("CipherKey not preserved: expected %v, got %v", tc.sourceChunk.CipherKey, dstChunk.CipherKey) |
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} |
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} else { |
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if len(dstChunk.CipherKey) > 0 { |
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t.Errorf("Expected no CipherKey, got %v", dstChunk.CipherKey) |
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} |
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} |
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|
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// Verify IsCompressed preservation
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if dstChunk.IsCompressed != tc.shouldPreserveIC { |
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t.Errorf("IsCompressed not preserved: expected %v, got %v", tc.shouldPreserveIC, dstChunk.IsCompressed) |
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} |
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// Verify ETag preservation
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if dstChunk.ETag != tc.sourceChunk.ETag { |
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t.Errorf("ETag not preserved: expected %s, got %s", tc.sourceChunk.ETag, dstChunk.ETag) |
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} |
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}) |
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} |
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} |
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// TestUploadChunkDataCompressionFlag tests that uploadChunkData respects the isCompressed flag
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func TestUploadChunkDataCompressionFlag(t *testing.T) { |
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// This is a unit test to verify the function signature and parameter passing
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// We can't easily test the actual upload without a running server, but we can
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// verify that the function accepts the correct parameters
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testCases := []struct { |
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name string |
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isCompressed bool |
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}{ |
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{ |
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name: "Compressed data", |
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isCompressed: true, |
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}, |
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{ |
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name: "Uncompressed data", |
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isCompressed: false, |
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}, |
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} |
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for _, tc := range testCases { |
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t.Run(tc.name, func(t *testing.T) { |
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// Verify function signature accepts isCompressed parameter
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// This ensures the parameter is being passed through the call chain
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var chunkData []byte |
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var assignResult *filer_pb.AssignVolumeResponse |
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// This will fail at runtime due to nil values, but it verifies the signature
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defer func() { |
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if r := recover(); r == nil { |
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// Expected to panic due to nil assignResult
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t.Error("Expected panic due to nil assignResult, but got none") |
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} |
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}() |
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s3a := &S3ApiServer{} |
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_ = s3a.uploadChunkData(chunkData, assignResult, tc.isCompressed) |
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}) |
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} |
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} |
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// TestCopySingleChunkWithEncryption tests the full chunk copy process for encrypted chunks
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func TestCopySingleChunkWithEncryption(t *testing.T) { |
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testCases := []struct { |
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name string |
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sourceChunk *filer_pb.FileChunk |
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expectPreserveCK bool |
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expectPreserveIC bool |
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description string |
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}{ |
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{ |
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name: "Encrypted and compressed chunk from encrypted volume", |
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sourceChunk: &filer_pb.FileChunk{ |
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FileId: "test,01234567890123456", |
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Offset: 0, |
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Size: 4194304, // 4MB
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CipherKey: []byte("test-cipher-key-1234567890123456"), |
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IsCompressed: true, |
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ETag: "abc123", |
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}, |
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expectPreserveCK: true, |
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expectPreserveIC: true, |
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description: "Should preserve both CipherKey and IsCompressed for encrypted volume chunks", |
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}, |
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{ |
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name: "Encrypted but not compressed chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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FileId: "test,01234567890123457", |
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Offset: 4194304, |
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Size: 4194304, |
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CipherKey: []byte("test-cipher-key-1234567890123456"), |
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IsCompressed: false, |
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ETag: "def456", |
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}, |
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expectPreserveCK: true, |
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expectPreserveIC: false, |
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description: "Should preserve CipherKey but not set IsCompressed", |
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}, |
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{ |
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name: "Compressed but not encrypted chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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FileId: "test,01234567890123458", |
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Offset: 8388608, |
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Size: 2097152, // 2MB
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CipherKey: nil, |
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IsCompressed: true, |
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ETag: "ghi789", |
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}, |
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expectPreserveCK: false, |
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expectPreserveIC: true, |
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description: "Should preserve IsCompressed but have no CipherKey", |
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}, |
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{ |
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name: "Neither encrypted nor compressed chunk", |
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sourceChunk: &filer_pb.FileChunk{ |
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FileId: "test,01234567890123459", |
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Offset: 10485760, |
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Size: 1048576, // 1MB
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CipherKey: nil, |
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IsCompressed: false, |
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ETag: "jkl012", |
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}, |
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expectPreserveCK: false, |
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expectPreserveIC: false, |
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description: "Should have neither CipherKey nor IsCompressed", |
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}, |
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} |
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|
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for _, tc := range testCases { |
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t.Run(tc.name, func(t *testing.T) { |
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s3a := &S3ApiServer{} |
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// Test createDestinationChunk (the part we can test without network)
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dstChunk := s3a.createDestinationChunk(tc.sourceChunk, tc.sourceChunk.Offset, tc.sourceChunk.Size) |
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// Verify CipherKey preservation
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if tc.expectPreserveCK { |
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if !bytes.Equal(dstChunk.CipherKey, tc.sourceChunk.CipherKey) { |
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t.Errorf("%s: CipherKey not preserved correctly", tc.description) |
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} |
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if len(dstChunk.CipherKey) == 0 { |
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t.Errorf("%s: Expected CipherKey to be preserved, but got empty", tc.description) |
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} |
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} else { |
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if len(dstChunk.CipherKey) > 0 { |
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t.Errorf("%s: Expected no CipherKey, but got %v", tc.description, dstChunk.CipherKey) |
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} |
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} |
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// Verify IsCompressed preservation
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if dstChunk.IsCompressed != tc.expectPreserveIC { |
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t.Errorf("%s: IsCompressed flag incorrect: expected %v, got %v", |
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tc.description, tc.expectPreserveIC, dstChunk.IsCompressed) |
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} |
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// Verify other fields are preserved
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if dstChunk.Offset != tc.sourceChunk.Offset { |
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t.Errorf("%s: Offset not preserved: expected %d, got %d", |
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tc.description, tc.sourceChunk.Offset, dstChunk.Offset) |
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} |
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if dstChunk.Size != tc.sourceChunk.Size { |
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t.Errorf("%s: Size not preserved: expected %d, got %d", |
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tc.description, tc.sourceChunk.Size, dstChunk.Size) |
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} |
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if dstChunk.ETag != tc.sourceChunk.ETag { |
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t.Errorf("%s: ETag not preserved: expected %s, got %s", |
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tc.description, tc.sourceChunk.ETag, dstChunk.ETag) |
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} |
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}) |
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} |
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} |
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// TestCopyChunksPreservesMetadata tests that copyChunks preserves all chunk metadata
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func TestCopyChunksPreservesMetadata(t *testing.T) { |
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// Create test entry with multiple encrypted chunks
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entry := &filer_pb.Entry{ |
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Attributes: &filer_pb.FuseAttributes{ |
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FileSize: 10485760, // 10MB
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}, |
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Chunks: []*filer_pb.FileChunk{ |
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{ |
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FileId: "vol1,01234567890123456", |
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Offset: 0, |
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Size: 4194304, |
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CipherKey: []byte("key1-1234567890123456789012345678"), |
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IsCompressed: true, |
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ETag: "chunk1-etag", |
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}, |
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{ |
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FileId: "vol2,01234567890123457", |
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Offset: 4194304, |
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Size: 4194304, |
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CipherKey: []byte("key2-1234567890123456789012345678"), |
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IsCompressed: true, |
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ETag: "chunk2-etag", |
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}, |
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{ |
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FileId: "vol3,01234567890123458", |
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Offset: 8388608, |
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Size: 2097152, |
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CipherKey: []byte("key3-1234567890123456789012345678"), |
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IsCompressed: false, // Last chunk might not be compressed
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ETag: "chunk3-etag", |
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}, |
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}, |
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} |
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s3a := &S3ApiServer{} |
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|
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// Verify each chunk's metadata is preserved in createDestinationChunk
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for i, sourceChunk := range entry.Chunks { |
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dstChunk := s3a.createDestinationChunk(sourceChunk, sourceChunk.Offset, sourceChunk.Size) |
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if !bytes.Equal(dstChunk.CipherKey, sourceChunk.CipherKey) { |
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t.Errorf("Chunk %d: CipherKey not preserved", i) |
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} |
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if dstChunk.IsCompressed != sourceChunk.IsCompressed { |
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t.Errorf("Chunk %d: IsCompressed not preserved: expected %v, got %v", |
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i, sourceChunk.IsCompressed, dstChunk.IsCompressed) |
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} |
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if dstChunk.Offset != sourceChunk.Offset { |
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t.Errorf("Chunk %d: Offset not preserved", i) |
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} |
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if dstChunk.Size != sourceChunk.Size { |
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t.Errorf("Chunk %d: Size not preserved", i) |
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} |
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if dstChunk.ETag != sourceChunk.ETag { |
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t.Errorf("Chunk %d: ETag not preserved", i) |
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} |
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} |
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} |
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// TestEncryptedVolumeScenario documents the expected behavior for encrypted volumes
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func TestEncryptedVolumeScenario(t *testing.T) { |
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t.Run("Scenario: Copy file on encrypted volume with multiple chunks", func(t *testing.T) { |
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// Scenario description for issue #7530:
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// 1. Volume is started with -filer.encryptVolumeData
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// 2. File is uploaded via S3 (automatically encrypted, multiple chunks)
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// 3. File is copied/renamed via S3 CopyObject
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// 4. Copied file should be readable
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//
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// The bug was that IsCompressed flag was not preserved during copy,
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// causing the upload logic to potentially double-compress the data,
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// making the copied file unreadable.
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sourceChunks := []*filer_pb.FileChunk{ |
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{ |
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FileId: "1,abc123", |
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Offset: 0, |
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Size: 4194304, |
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CipherKey: util.GenCipherKey(), // Simulates encrypted volume
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IsCompressed: true, // Simulates compression
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ETag: "etag1", |
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}, |
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{ |
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FileId: "2,def456", |
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Offset: 4194304, |
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Size: 4194304, |
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CipherKey: util.GenCipherKey(), |
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IsCompressed: true, |
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ETag: "etag2", |
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}, |
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} |
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|
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s3a := &S3ApiServer{} |
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|
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// Verify that createDestinationChunk preserves all necessary metadata
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for i, srcChunk := range sourceChunks { |
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dstChunk := s3a.createDestinationChunk(srcChunk, srcChunk.Offset, srcChunk.Size) |
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|
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// Critical checks for issue #7530
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if !dstChunk.IsCompressed { |
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t.Errorf("Chunk %d: IsCompressed flag MUST be preserved to prevent double-compression", i) |
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} |
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if !bytes.Equal(dstChunk.CipherKey, srcChunk.CipherKey) { |
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t.Errorf("Chunk %d: CipherKey MUST be preserved for encrypted volumes", i) |
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} |
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if dstChunk.Offset != srcChunk.Offset { |
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t.Errorf("Chunk %d: Offset must be preserved", i) |
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} |
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if dstChunk.Size != srcChunk.Size { |
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t.Errorf("Chunk %d: Size must be preserved", i) |
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} |
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} |
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t.Log("✓ All chunk metadata properly preserved for encrypted volume copy scenario") |
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}) |
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} |
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