HI Alan, Thanks for the help. :) On Thu, Feb 25, 2016 at 1:14 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 24 Feb 2016, Anil Nair wrote: > >> >> [ 3793.220454] scsi 5:0:0:0: Direct-Access Kingston DataTraveler >> >> 2.0 1.00 PQ: 0 ANSI: 4 >> >> [ 3793.220543] device: 'target5:0:0': device_add >> > ... >> >> [ 3922.968041] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> >> [ 3923.100302] usb 1-3: device firmware changed >> > >> > That's the problem right there. Notice that there's a two-minute delay >> > after the device is plugged in before the error occurs. What happened >> > during that delay? >> > >> >> I am unable to mount it.What could be the issue? Can I recover it? >> > >> > More information is needed. Please capture a usbmon trace and post the >> > result (see Documentation/usb/usbmon.txt in the kernel source for >> > instructions). >> >> As requested I am posting the usbmon trace, I am attaching the usbmon >> trace as i don't want to clog the email. >> >> Also this occured while creating partition using fdisk and formatting >> it using mke2fs command, >> >> [ 473.037204] Buffer I/O error on dev sdc1, logical block 0, lost >> async page write >> [ 473.037215] Buffer I/O error on dev sdc1, logical block 1, lost >> async page write >> [ 473.037220] Buffer I/O error on dev sdc1, logical block 2, lost >> async page write >> [ 473.037225] Buffer I/O error on dev sdc1, logical block 3, lost >> async page write >> [ 473.037230] Buffer I/O error on dev sdc1, logical block 4, lost >> async page write >> [ 473.037235] Buffer I/O error on dev sdc1, logical block 5, lost >> async page write >> [ 473.037245] Buffer I/O error on dev sdc1, logical block 6, lost >> async page write >> [ 473.037248] Buffer I/O error on dev sdc1, logical block 7, lost >> async page write >> [ 473.037250] Buffer I/O error on dev sdc1, logical block 8, lost >> async page write >> [ 473.037253] Buffer I/O error on dev sdc1, logical block 9, lost >> async page write >> [ 479.588081] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 486.276063] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 492.964036] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 499.652044] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 506.340045] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 513.028049] usb 1-3: reset high-speed USB device number 5 using ehci-pci >> [ 513.161249] sd 5:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR >> driverbyte=DRIVER_OK >> [ 513.161257] sd 5:0:0:0: [sdc] CDB: Write(10) 2a 00 00 00 08 f0 00 00 f0 00 >> [ 513.161260] blk_update_request: I/O error, dev sdc, sector 2288 >> [ 513.161265] buffer_io_error: 20 callbacks suppressed > > The usbmon trace shows the problem here: > > ffff8800da6c59c0 3935367775 S Bo:1:006:2 -115 31 = 55534243 ed020000 00080000 00000a2a 00000000 00000004 00000000 000000 > ffff8800da6c59c0 3935367918 C Bo:1:006:2 0 31 > > ffff8800b226ef00 3935367974 S Bo:1:006:2 -115 2048 = 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > ffff8800b226ef00 3941733001 C Bo:1:006:2 -71 1024 > > > This is a WRITE(16) command trying to transfer 2048 bytes to the flash > drive. The command failed with error -71 after only 1024 bytes were > sent. This happened consistently, every time the computer tried to > write to the drive. > > -71 is a low-level hardware error. It means the flash drive isn't > working right. You can try formatting it on a different computer, to > rule out the possibility of a problem in your computer's USB > controller. But if that doesn't work either then I think the drive is > hopeless -- it can be read but not written. > > Alan Stern > -- -- Regards, Anil Nair -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
