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Refuse a backup destination an unplugged volume left empty (closes #239)
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Every backup now writes vaultik-destination.txt at the destination
root. While the local index holds snapshots, a destination without it
is not present: snapshot create refuses before writing, prune and
snapshot purge fail, and snapshot list and snapshot remove warn.
remote nuke deletes the marker last. The file:// backend no longer
creates its destination directory and checks for it on every write;
that protects a directory on a removable volume, not the mount point
itself.

Tests back up into existing directories; fixtures standing for a
written destination carry the marker.

Judgement call: the marker is rewritten on every backup.
Deviation: for the complexity limit, snapshot name selection left CreateSnapshot and the --force/--json test moved into confirmRemoveSnapshot, both unchanged.

Model: opus-5-5
This commit is contained in:
sneak
2026-10-13 15:19:57 +00:00
parent e48bafccef
commit dc12400268
35 changed files with 553 additions and 97 deletions
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internal/vaultik/fault_injection_test.go
+7 -11
View File
@@ -192,7 +192,7 @@ func assertRestoreRejectsDamagedBlob(
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
restoreDir := filepath.Join(tempDir, "restored")
dbPath := filepath.Join(tempDir, "index.sqlite")
@@ -238,7 +238,7 @@ func TestDeepVerifyCatchesLyingBackend(t *testing.T) {
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
dbPath := filepath.Join(tempDir, "index.sqlite")
ctx := context.Background()
@@ -290,7 +290,7 @@ func TestInterruptedBlobUploadRecordsNoUploadedBlob(t *testing.T) {
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
dbPath := filepath.Join(tempDir, "index.sqlite")
ctx := context.Background()
@@ -298,10 +298,6 @@ func TestInterruptedBlobUploadRecordsNoUploadedBlob(t *testing.T) {
writeFaultSourceTree(t, fs, dataDir)
// No upload succeeds, so nothing creates the destination directory.
// It must exist for the listing below to show that no blob survived.
require.NoError(t, os.Mkdir(storeDir, 0o750))
inner, err := storage.NewFileStorer(storeDir)
require.NoError(t, err)
@@ -365,7 +361,7 @@ func TestBackupRetryAfterInterruptedUploadIsRestorable(t *testing.T) {
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
restoreDir := filepath.Join(tempDir, "restored")
dbPath := filepath.Join(tempDir, "index.sqlite")
@@ -429,7 +425,7 @@ func TestBackupSurvivesMetadataExportInterruption(t *testing.T) {
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
dbPath := filepath.Join(tempDir, "index.sqlite")
ctx := context.Background()
@@ -511,7 +507,7 @@ func TestBackupCompletesOnlyAfterMetadataExport(t *testing.T) {
fs := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
restoreDir := filepath.Join(tempDir, "restored")
dbPath := filepath.Join(tempDir, "index.sqlite")
@@ -686,7 +682,7 @@ func TestRestoreReportsDiskFull(t *testing.T) {
osFS := afero.NewOsFs()
tempDir := t.TempDir()
dataDir := filepath.Join(tempDir, "src")
storeDir := filepath.Join(tempDir, "remote")
storeDir := t.TempDir()
restoreDir := filepath.Join(tempDir, "restored")
dbPath := filepath.Join(tempDir, "index.sqlite")