On Sat, 2014-05-10 at 22:38 +0800, loody wrote: > hi all: > I have a USB hard disk and when I play specific file. > it will show below message > ( I purpose enable usb/storage/transport.c debug message about urb debug) > what makes me confused are > 1. Does " Unhandled sense code" mean the " SCSI Request Sense" command?
Error handling couldn't correct the error so it was passed up. > 2. if #1 is correct, there should be any error handling for not keep > sending following commands. Why usb driver keep clear this halt > enpoint? > isn't there any timeout mechanism no matter in scsi layer or usb layer? > > appreciate your help > > > [22:06:48]clearing endpoint halt for pipe 0xc0008280 > [22:06:48]sd 0:0:0:0: [sda] Unhandled sense code > [22:06:48]sd 0:0:0:0: [sda] Result: hostbyte=0x10 driverbyte=0x08 > [22:06:48]sd 0:0:0:0: [sda] Sense Key : 0x3 [current] > [22:06:48]sd 0:0:0:0: [sda] ASC=0x11 ASCQ=0x0 > [22:06:48]sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 00 24 42 22 00 00 f0 00 > [22:06:48]end_request: critical target error, dev sda, sector 2376226 If you compiled your kernel with SCSI messages it would tell you that this is a medium error, unrecovered read error in sector 2376226 The device is failing and the sector cannot be recovered. James -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
