hdparm 테스트 하는데[root@test ~]# hdparm -tT /dev/mapper/isw_ciajbcfggd_Volume1p8 /dev/mapper/isw_ciajbcfggd_Volume1p8: Timing cached reads: 51120 MB in 1.99 seconds = 25636.22 MB/secHDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Timing buffered disk reads: 1110 MB in 3.00 seconds = 369.83 MB/secHDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriat..