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Re: problems with USB disk

On Sat, 23 Oct 2010 02:49:10 +0200, lee wrote:

> On Fri, Oct 22, 2010 at 03:36:44PM +0000, Camaleón wrote:
>> On Fri, 22 Oct 2010 14:07:09 +0200, lee wrote:
>> > I´m having trouble copying files for backup purposes to an USB disk
>> > with rsync. Copying the files sometimes fails with "Input/output
>> > error (5)", and I´m getting messages in the syslog like these:
>> (...)
>> > [128627.397894] EXT4-fs error (device sdf3):> __ext4_get_inode_loc:
>> > unable to read inode block - inode=52298807, block=209191011
>> That looks like a filesystem error/corruption. Did you fsck-it?
> I´ve had this two or three times before when the disk was connected to
> an USB 3.0 controller. (It´s an USB 3.0 capable enclosure.) Last time
> when there were copying errors, the disk was connected to the USB 3.0
> controller. Umount and sync would just hang indefinitely. When I tried
> to rmmod the xhci module, the computer froze :(

Have you tested the unit with another computer? Just in case...

OTOH, what USB drive is this (brand and model)? :-?

> If the cable or the enclosure were defective, could I sometimes write
> about 650GB without problems and sometimes not? I leave the USB cable
> plugged in, so no changes between working/failing there.
> Perhaps the best way is to get a new USB 3.0 cable and do some testing
> on this disk ...

I see. It's an embedded USB disk enclosure that does not allow to extract 
the disk without removing guarantee and all that annoyances. That's why I 
avoid these devices (I prefer buying the USB case and hard disk separated 
with external power supply) :-(

Well, read the manufacturer's specs for the unit (file system format 
support) and check it with another computer using one of the supported 
formatting options (better yet, ext3 if available) to see what happens. 
If you are still facing the same problems, just RMA the drive.



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