Compact mode: PCM_COMPACT_WITH_HARD_DISKS_INFO : show question before compacting with size disks info PCM_HARD_DISKS_INFO : just get disk info PCM_FULL_CLEAN_UP_VM : compact all disks and delete all unneccessary files

typedef enum _PRL_COMPACT_MODE {
  PCM_COMPACT_WITH_HARD_DISKS_INFO = 1<<(PACF_MAX+1),
  PCM_HARD_DISKS_INFO = 1<<(PACF_MAX+2),
  PCM_FULL_CLEAN_UP_VM = 1<<(PACF_MAX+3)
} PRL_COMPACT_MODE;