Re: [Bug-ddrescue] Missing range in log during splitting phase

[Ian S. Worthington]

Hello Antonio,

Yes, I can confirm that that was a log file produced by ddrescue, viewed
whilst ddrescue was still running.

I've rechecked its status this morning though and it now seems to have filled
in that area:

0x8DD96F4000  0x00000200  -
0x8DD96F4200  0x00000600  +
0x8DD96F4800  0x00000200  -
0x8DD96F4A00  0x00000600  +
0x8DD96F5000  0x00000400  -
0x8DD96F5400  0x00000600  +
0x8DD96F5A00  0x00000200  -
0x8DD96F5C00  0x00000600  +
0x8DD96F6200  0x00000200  -
0x8DD96F6400  0x00000600  +
0x8DD96F6A00  0x00000400  -
0x8DD96F6E00  0x00000600  +
0x8DD96F7400  0x00000200  -
0x8DD96F7600  0x00000600  +
0x8DD96F7C00  0x00000200  -
0x8DD96F7E00  0x00000600  +
0x8DD96F8400  0x00000400  -
0x8DD96F8800  0x00000600  +
etc

This was without me taking any manual action on the log file.

Ian

------ Original Message ------
Received: 12:32 PM COT, 12/30/2014
From: Antonio Diaz Diaz <address@hidden>
To: "Ian S. Worthington" <address@hidden>Cc: address@hidden
Subject: Re: [Bug-ddrescue] Missing range in log during splitting phase

> Hello Ian,
> 
> Ian S. Worthington wrote:
> > Should not the log contain all possible addresses?
> 
> Yes. As you can see in the manual[1], "The blocks in the list of data 
> blocks must be contiguous and non-overlapping".
> 
>
[1]http://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html#Logfile-structure
> 
> 
> > Using ddrescueview I saw an area increasing in size that was not colored
to
> > identify its status and when I investigated the log file I saw the
following:
> > 
> > 0x8DD96F4000  0x00000200  -
> > 0x8DD96F4200  0x00000600  +
> > 0x8DE9708000  0x00000200  -
> > 0x8DE9708200  0x0000B600  +
> 
> If ddrescue has produced the logfile above, then it is a bug. Ddrescue 
> would not accept such logfile as input.
> 
> 
> > Is this expected or should I insert the missing area as a non-tried block
and
> > restart?
> 
> Inserting the missing area as a non-tried block and restarting (maybe 
> using ddrescue 1.19) will probably solve the problem, but I am very 
> interested in knowing the cause of the missing area.
> 
> 
> Best regards,
> Antonio.