Shinichiro, > I guess SD_LBP_FULL would be more appropriate than SD_LBP_DISABLE, > because the comment in drivers/scsi/sd.h says that SD_LBP_DISABLE > indicates that "Discard disabled due to failed cmd". > I confirmed that the fix patch avoids my failure both with > SD_LBP_DISABLE and SD_LBP_FULL. Yes, you are right. It is more appropriate to print "full" in sysfs when LBMPE is disabled. Printing aside, the two modes are identical. I switched the return to SDP_LBP_FULL. -- Martin K. Petersen Oracle Linux Engineering