USB disk problems

[Dan]

J.L. Coenders wrote:
> Hi,
> I found a lot of the messages below in my messages.log.
> Is it anything to worry about? It occurs when copying from USB drive to USB 
> drive, which are quite slow although they are both connected to a USB 2.0 
> socket. Independent they work with high speed.
>
> Regards,
> Jeroen
>
>
> Jul  7 06:28:27 localhost kernel: usb 3-4: reset high speed USB device using 
> ehci_hcd and address 4
> Jul  7 06:28:28 localhost kernel: usb 3-4: reset high speed USB device using 
> ehci_hcd and address 4
> Jul  7 06:28:34 localhost kernel: sd 1:0:0:0: SCSI error: return code = 
> 0x50000
> Jul  7 06:28:34 localhost kernel: end_request: I/O error, dev sdb, sector 
> 53584991
> Jul  7 06:28:34 localhost kernel: end_request: I/O error, dev sdb, sector 
> 53584992
> Jul  7 07:32:50 localhost kernel: usb 3-3.1: reset high speed USB device using 
> ehci_hcd and address 3
> Jul  7 07:35:03 localhost kernel: usb 3-4: USB disconnect, address 4
>   
I/O errors are bad. I'd run badblocks -svn /dev/sdb (unmount its 
partitions first) (will take a LONG time) to see if there are any bad 
blocks on the disk, otherwise it's probably a connection issue.
-Dan