input/output error on disk(?)

[charles zeitler]

thanks for the info.

On Thu, Oct 15, 2009 at 12:30 PM, Tony Nelson
<tonynelson at georgeanelson.com> wrote:
> On 09-10-15 01:29:22, charles zeitler wrote:
>> when trying to copy a certain file, i get the message:
>> cp: reading 'file' :  Input/output error
>
> It is likely that the disk has one or more bad blocks.  Use
> `smartctl -a /dev/sdx` to see all the data (or -A to see only the
> attributes) and look at the raw values of Current_Pending_Sector and
> Reallocated_Event_Count.  The first reflects unfixed problems, and the
> second fixed problems.  If both numbers are low,

13 & 0

 I would just keep
> using the drive, though I would first do a long test with `smartctl -t
> long /dev/sdx` (wait until the indicated time and then do a `smartctl -
> a /dev/sdx` to see what happened)

should have more data from this in 4 hours.

and then enabled Automatic Offline
> Testing with `smartctl -o on /dev/sdx` (this will help keep up with
> sectors as they go bad, without unnecessary data loss).
>
> A program such as ddrescue (`yum install ddrescue`, `info ddrescue`)
> may help to salvage the damaged file(s).
>
> --
>
the file itself is not important, but i don't want the error
to migrate to one that is..

charles zeitler