fix(firecracker-host): validate snapshot reflinks on deploy

This commit is contained in:
Harivansh Rathi 2026-04-10 19:46:35 +00:00
parent 99ad3b4cf8
commit fc21e897ea

View file

@ -137,11 +137,19 @@ func validateDiskCloneBackend(cfg appconfig.Config) error {
if err := cloneDiskFile(sourcePath, targetPath, cfg.DiskCloneMode); err != nil { if err := cloneDiskFile(sourcePath, targetPath, cfg.DiskCloneMode); err != nil {
return fmt.Errorf("validate disk clone backend from artifacts dir %q to machine disks dir %q: %w", cfg.ArtifactsDir, cfg.MachineDisksDir, err) return fmt.Errorf("validate disk clone backend from artifacts dir %q to machine disks dir %q: %w", cfg.ArtifactsDir, cfg.MachineDisksDir, err)
} }
snapshotProbePath := filepath.Join(cfg.SnapshotsDir, "."+filepath.Base(sourcePath)+".snapshot-target")
defer func() {
_ = os.Remove(snapshotProbePath)
}()
if err := cloneDiskFile(targetPath, snapshotProbePath, cfg.DiskCloneMode); err != nil {
return fmt.Errorf("validate disk clone backend from machine disks dir %q to snapshots dir %q: %w", cfg.MachineDisksDir, cfg.SnapshotsDir, err)
}
return nil return nil
} }
func reflinkRequiredError(err error) error { func reflinkRequiredError(err error) error {
return fmt.Errorf("FIRECRACKER_HOST_DISK_CLONE_MODE=reflink requires a CoW filesystem with reflink support across artifacts and machine-disks; mount FIRECRACKER_HOST_ROOT_DIR on XFS with reflink=1 or Btrfs, preferably on local NVMe, or set FIRECRACKER_HOST_DISK_CLONE_MODE=copy for the slow full-copy fallback: %w", err) return fmt.Errorf("FIRECRACKER_HOST_DISK_CLONE_MODE=reflink requires a CoW filesystem with reflink support across artifacts, machine-disks, and snapshots; mount FIRECRACKER_HOST_ROOT_DIR on XFS with reflink=1 or Btrfs, preferably on local NVMe, or set FIRECRACKER_HOST_DISK_CLONE_MODE=copy for the slow full-copy fallback: %w", err)
} }
func reflinkFile(source string, target string) error { func reflinkFile(source string, target string) error {