[gentoo-user] Re: is ddrescue this slow?

[Grant Edwards]

On 2010-01-09, Neil Bothwick <neil@××××××××××.uk> wrote:
> On Sat, 9 Jan 2010 07:20:18 +0000, Valmor de Almeida wrote:
>
>> Sometimes the "current rate" reads 0 B/s for a long time... and "time
>> from last successful read" can be 8m.
>>
>> Would any one know whether this is normal?
>
> Doesn't ddrescue retry on blocks it cannot read?
>
> That would explain the variable read rate, even the period of
> zero activity. If your drive is that badly damaged, dd would
> have been no use anyway.

Yes.  On a disk with a lot of bad blocks it can be very slow as
it retries bad blocks and narrows the failed regions.

-- 
Grant