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Re: [Bug-ddrescue] Skipping over tar pits
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From: |
Ole Tange |
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Subject: |
Re: [Bug-ddrescue] Skipping over tar pits |
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Date: |
Mon, 14 Aug 2017 19:51:57 +0200 |
On Mon, Aug 14, 2017 at 7:01 PM, Ole Tange <address@hidden> wrote:
> On Mon, Aug 14, 2017 at 9:56 AM, Ketil Froyn <address@hidden> wrote:
>
>> From your description, I'd guess that one of the heads on your drive is
>> having trouble, while the other ones work ok.
>
> In that case we should expect the problem to arise at a fairly predictable
> rate.
It looks like Ketil is right: I get around ~50 MB of tar pit and ~150
MB of smooth sailing. Then ~50 MB of tar pit again. The drive is
hts545050b9a300 and has 250 GB/platter + 4 heads according to
https://www.hgst.com/sites/default/files/resources/TS5K500B_DS_final.pdf
Given that I have finite amount of time what is the most efficient way
of getting all the data, that is fast to copy, and skip the data, that
is in the tarpit?
/Ole