Re: [Bug-ddrescue] 10KB/sec data recovery rates - possible cause?

[Sam]

Paul,

> I might grab another dying drive and set up some extensive traces in

> ddrescue to see what's happening.

Just a quick comment: The problem that I see with your plan, is that unless that next "dying drive" which you mention behaves in _exactly_ the same way as this current one, then the Linux + ddrescue behaviours may not be the same. That would mean that any conclusions based on your tracing of ddrescue in _that_ case _may_ not be helpful or comparable with what you are seeing with the _current_ drive.  There are many, many different ways for different failing drives to behave!

Good luck,

Sam

---

From: Paul L Daniels <address@hidden>
To: Paul L Daniels <address@hidden>
Cc: address@hidden
Sent: Tuesday, 25 June 2013, 13:35
Subject: Re: [Bug-ddrescue] 10KB/sec data recovery rates - possible cause?

> *THIS* is the key!  While it possibly slows down the recovery on a
> normal drive, in this case it's improved my average read rate to
> ~200KB/sec and it doesn't degenerate after bad sectors.

Unfortunately it seems that while I have indeed gained a higher average
recovery rate, it still is not bouncing back after the bad sector /
damaged areas, so it's back to the drawing board for me.  I'm not sure
why it did it for the one time that I tried at the start, but it's not
doing it any more :(

I might grab another dying drive and set up some extensive traces in
ddrescue to see what's happening.

Thanks for the help though Antonio, that idea of yours at least did
give me some extra headway :)


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