hdparm + HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl

[amio]

Hi All,
Am finding performance of my SD card using hdparm.

Code:

hdparm -tT /dev/BlockDev0

/dev/BlockDev0:
 Timing cached reads:   1118 MB in  2.00 seconds = 558.61 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
 Timing buffered disk reads:   14 MB in  3.13 seconds =   4.47 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device

Am not aware of "HDIO_DRIVE_CMD(null) (wait for flush complete) failed:
Inappropriate ioctl for device". What actually makes it to occur?? What does
this problem mean? How to resolve it??

Thanks in advance.
Amio
-- 
View this message in context: http://www.nabble.com/hdparm-%2B-HDIO_DRIVE_CMD%28null%29-%28wait-for-flush-complete%29-failed%3A-Inappropriate-ioctl-tp22352171p22352171.html
Sent from the Linux Users (linux-sxs.org) mailing list archive at Nabble.com.