mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-09-30 11:45:42 +00:00
Chris Lu
8899c3aad8
Generate stamps EncodeTsNs into the volume's .vif. Reads carry it to the shard's owning volume (resolved together via FindEcVolumeWithShard, so a multi-disk server validates the disk that actually serves the bytes) and reject a shard from a different encode run, recovering from parity. A zero on either side (pre-upgrade volume) skips the guard.
94 lines
2.9 KiB
Go
94 lines
2.9 KiB
Go
package erasure_coding
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import (
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"fmt"
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
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"github.com/seaweedfs/seaweedfs/weed/storage/needle"
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"github.com/seaweedfs/seaweedfs/weed/storage/types"
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"github.com/seaweedfs/seaweedfs/weed/storage/volume_info"
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)
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func TestPositioning(t *testing.T) {
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ecxFile, err := os.OpenFile("./test_files/389.ecx", os.O_RDONLY, 0)
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if err != nil {
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t.Errorf("failed to open ecx file: %v", err)
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}
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defer ecxFile.Close()
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stat, _ := ecxFile.Stat()
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fileSize := stat.Size()
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tests := []struct {
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needleId string
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offset int64
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size int
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}{
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{needleId: "0f0edb92", offset: 31300679656, size: 1167},
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{needleId: "0ef7d7f8", offset: 11513014944, size: 66044},
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}
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for _, test := range tests {
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needleId, _ := types.ParseNeedleId(test.needleId)
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offset, size, err := SearchNeedleFromSortedIndex(ecxFile, fileSize, needleId, nil)
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assert.Equal(t, nil, err, "SearchNeedleFromSortedIndex")
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fmt.Printf("offset: %d size: %d\n", offset.ToActualOffset(), size)
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}
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needleId, _ := types.ParseNeedleId("0f087622")
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offset, size, err := SearchNeedleFromSortedIndex(ecxFile, fileSize, needleId, nil)
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assert.Equal(t, nil, err, "SearchNeedleFromSortedIndex")
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fmt.Printf("offset: %d size: %d\n", offset.ToActualOffset(), size)
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var shardEcdFileSize int64 = 1118830592 // 1024*1024*1024*3
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intervals := LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, shardEcdFileSize, offset.ToActualOffset(), types.Size(needle.GetActualSize(size, needle.GetCurrentVersion())))
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for _, interval := range intervals {
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shardId, shardOffset := interval.ToShardIdAndOffset(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize)
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fmt.Printf("interval: %+v, shardId: %d, shardOffset: %d\n", interval, shardId, shardOffset)
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}
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}
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// TestNewEcVolumeLoadsEncodeTsNs pins that the per-encode identity stamped into
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// .vif is loaded onto the EcVolume, so reads can reject a shard from a different
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// encode run.
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func TestNewEcVolumeLoadsEncodeTsNs(t *testing.T) {
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dir := t.TempDir()
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const vid = needle.VolumeId(123)
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base := EcShardFileName("", dir, int(vid))
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// A 0-byte .ecx is a valid index (no live needles) and lets NewEcVolume mount.
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if err := os.WriteFile(base+".ecx", nil, 0o644); err != nil {
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t.Fatalf("write .ecx: %v", err)
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}
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const tsNs int64 = 1717000000000000123
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vi := &volume_server_pb.VolumeInfo{
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Version: uint32(needle.Version3),
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EcShardConfig: &volume_server_pb.EcShardConfig{
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DataShards: 10,
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ParityShards: 4,
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EncodeTsNs: tsNs,
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},
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}
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if err := volume_info.SaveVolumeInfo(base+".vif", vi); err != nil {
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t.Fatalf("save .vif: %v", err)
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}
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ev, err := NewEcVolume(types.HardDriveType, dir, dir, "", vid)
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if err != nil {
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t.Fatalf("NewEcVolume: %v", err)
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}
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defer ev.Close()
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if ev.EncodeTsNs != tsNs {
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t.Errorf("EncodeTsNs = %d, want %d", ev.EncodeTsNs, tsNs)
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}
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}
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