This ioctl is deprecated.
int ioctl(int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks)
File descriptor returned by
The total number of uncorrected blocks seen by the driver so far.
This ioctl call returns the number of uncorrected blocks detected by the device driver during its lifetime. For meaningful measurements, the increment in block count during a specific time interval should be calculated. For this command, read-only access to the device is sufficient.