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[Bug-ddrescue] ddrescue Version 1.11
From: |
Meger.Arno |
Subject: |
[Bug-ddrescue] ddrescue Version 1.11 |
Date: |
Wed, 31 Mar 2010 15:22:22 +0200 |
Hello ddrescue Bug-Support, hello Antonio,
I´m using ddrescue 1.11 for testing some failed 512MB compact flash devices.
On of these devices has 64 bad blocks (Sectors 0-63) according to the badblocks
linux tool.
I tried to make an image with ddrescue "ddrescue -d -v /dev/hdc ./hdc/cf.img
./hdc/cf.log"
and looked in the log file and expected to find some line like
# pos size status
0x00000000 0x00008000 -
0x00008000 0x1F303E00 +
Instead I find
# pos size status
0x00000000 0x00000200 -
0x00000200 0x00010000 *
0x00010200 0x1F303E00 +
According the the descriptinion of ddrescues function I thought that it will
split the "*" area to reared each single bad sector?
I also tested
ddrescue -d -v -c 1 /dev/hdd ./hdd/cf.img ./hdd/cf.log
so that each reads only 1 sector a time to find the real size of the bad sector
range => same logfile.
I last tried the option -T "ddrescue -d -v -T /dev/hdd ./hdd/cf.img
./hdd/cf.log" in an additional call of ddrescue.
Now the log-files looks even more wrong:
# pos size status
0x00000000 0x00000200 -
0x00000200 0x00000200 +
0x00000400 0x00000200 -
0x00000600 0x0000FC00 *
0x00010200 0x1F303E00 +
But the second sector (position 0x200) is definitive defect.
The logfile and the copied data area are missing the "good range" 0x00008000 -
0x00010000...
Then I tested with version 1.8. Here the Log-File looks even more wrong:
# pos size status
0x00000000 0x00000200 -
0x00000200 0x00000600 +
0x00000800 0x00000200 -
0x00000A00 0x00000600 +
0x00001000 0x00000200 -
0x00001200 0x00000600 +
0x00001800 0x00000200 -
0x00001A00 0x00000600 +
0x00002000 0x00000200 -
0x00002200 0x00000600 +
0x00002800 0x00000200 -
0x00002A00 0x00000600 +
0x00003000 0x00000200 -
0x00003200 0x00000600 +
0x00003800 0x00000200 -
0x00003A00 0x00000600 +
0x00004000 0x00000200 -
0x00004200 0x00000600 +
0x00004800 0x00000200 -
0x00004A00 0x00000600 +
0x00005000 0x00000200 -
0x00005200 0x00000600 +
0x00005800 0x00000200 -
0x00005A00 0x00000600 +
0x00006000 0x00000200 -
0x00006200 0x00000600 +
0x00006800 0x00000200 -
0x00006A00 0x00000600 +
0x00007000 0x00000200 -
0x00007200 0x00000600 +
0x00007800 0x00000200 -
0x00007A00 0x1F30C600 +
It seems to find nearly the 64 sectors frontier but shows many errornously good
reported sectors.
Version 1.10 looks like 1.8...
Thanks
Arno Meger
Scheidt & Bachmann GmbH
Qualitätswesen
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