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cea4b0dd05
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snapshot create --prune purged the older snapshots holding a volume's files when the volume, mounted below a configured path, was not mounted: its empty mount point read as deleted files. The scan now records in the local index each directory at or below a configured path that is on a different device from its parent directory. Under --prune, a run that does not find such a directory recorded by an earlier snapshot of that name skips the prune, keeps every older snapshot, names the directory and its snapshot, and exits non-zero, as for an empty configured path. A volume retired on purpose is cleared by removing the older snapshots with snapshot purge. Model: opus-5-5
98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
package snapshot_test
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import (
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"context"
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"os"
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"path/filepath"
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"slices"
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"testing"
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"github.com/spf13/afero"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"sneak.berlin/go/vaultik/internal/database"
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"sneak.berlin/go/vaultik/internal/snapshot"
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)
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// A scan records with the snapshot each directory on a different device
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// from its parent directory, as a mount point is, the scanned path
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// included. A filesystem that gives no device numbers, as the in-memory
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// one, records none. See https://git.eeqj.de/sneak/vaultik/issues/395.
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func TestScanRecordsMountPoints(t *testing.T) {
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t.Parallel()
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const (
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scannedPath = "/data/source"
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snapshotID = "mount-points"
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)
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tests := []struct {
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name string
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// onVolume names the directories on the volume's device; every
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// other directory is on another one. nil leaves the device
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// numbers to the in-memory filesystem, which has none.
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onVolume []string
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want []string
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}{
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{
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name: "volume below the scanned path",
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onVolume: []string{"nas"},
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want: []string{scannedPath + "/nas"},
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},
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{
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name: "volume at the scanned path",
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onVolume: []string{"source", "nas"},
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want: []string{scannedPath},
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},
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{name: "no device numbers", want: nil},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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fs := afero.NewMemMapFs()
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for _, path := range []string{
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scannedPath + "/notes.txt", scannedPath + "/nas/a.txt",
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} {
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require.NoError(t, fs.MkdirAll(filepath.Dir(path), 0o755))
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require.NoError(t, afero.WriteFile(fs, path, []byte(path), 0o644))
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}
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db, err := database.NewTestDB()
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require.NoError(t, err)
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t.Cleanup(func() { _ = db.Close() })
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repos := database.NewRepositories(db)
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createTestSnapshotRecord(ctx, t, repos, snapshotID)
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cfg := snapshot.ScannerConfig{
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FS: fs,
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ChunkSize: int64(1024 * 16),
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Repositories: repos,
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MaxBlobSize: int64(1024 * 1024),
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CompressionLevel: 3,
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AgeRecipients: []string{testAgePublicKey},
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}
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if tt.onVolume != nil {
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cfg.DeviceNumber = func(info os.FileInfo) (uint64, bool) {
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if slices.Contains(tt.onVolume, info.Name()) {
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return 2, true
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}
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return 1, true
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}
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}
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_, err = snapshot.NewScanner(cfg).Scan(ctx, scannedPath, snapshotID)
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require.NoError(t, err)
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got, err := repos.Snapshots.GetMountPoints(ctx, snapshotID)
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require.NoError(t, err)
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assert.Equal(t, tt.want, got)
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})
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}
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}
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