Re: [Bug-ddrescue] Cannot abort reading from faulty device

[mittendorf]

Hi Antonio,

On 12/08/2017 07:47 PM, Antonio Diaz Diaz wrote:
> address@hidden wrote:
>>> It looks like a bug or limitation in the kernel driver (the read call
>>> blocks forever until you disconnect the drive).
>>
>> So there is nothing that can be done about this? It's an USB HDD, so it
>> is a quite common device type...
>
> Maybe I could find the way to make ddrescue exit in this case, but if
> the kernel continues locked on the drive, you would need to disconnect
> it anyway for it to respond again. So, not sure if it is worth the
> trouble. In addition, I think I have never found this problem myself
> and couldn't therefore test a possible workaround.
well, I think it would be great to show the user what happens compared
to a frozen CUI and a user not knowing whether something is still
happening /will happen.

I also noticed for that very device that the slow-read definition
-a5000000 , which should define < 5MBs as slow read from my
understanding, and a current speed of less than 100KBs the "slow read"
counter is stuck at 0.

Thank you.