[sleuthkit-developers] [ sleuthkit-Bugs-2351405 ] disk_stat results incorrect

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Bugs item #2351405, was opened at 2008-11-26 11:30
Message generated for change (Settings changed) made by carrier
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Category: Disk Tools
Group: None
>Status: Closed
>Resolution: Wont Fix
Priority: 5
Private: No
Submitted By: Brian Carrier (carrier)
Assigned to: Brian Carrier (carrier)
Summary: disk_stat results incorrect

Initial Comment:
Just something I thought might be of interest to the group.   The newest
version of hdparm has some interesting developments.
>From http://freshmeat.net/projects/hdparm/?branch_id=4062&release_id=288158:

*"Changes:*
Support for Device Configuration Overlay was added, with the new flags
"--dco-freeze", "--dco-identify", and "--dco-restore"."

I have compared results from disk_stat with hdparm --dco-identify
command on my home machine.   On my main O/S drive disk_stat reports one
less sector than hdparm, I guess that disk_stat is counting from zero
and hdparm counting from one.

On my storage drive, something curious occurs:
hdparm --dco-identify reports "Real max sectors" as 488397168

Disk_stat on the same disk gives the following output:
Maximum Disk Sector: 268435454
Maximum User Sector: 488397167

Again, there is one sector difference between the max number of sectors
reported by disk_stat and hdparm, but I don't understand how the Maximum
User Sectors can be larger than the Maximum Disk Sectors.   If I
understood Issue #20 of the sleuthkit Informer correctly, the Maximum
User Sector is the number of sectors visible to the user, the Maximum
Disk Sector is the Maximum User Sector + the number of sectors in the
HPA.   Can anyone explain the disk_stat output above?  I am using
disk_stat version 3.0.0b3

Thanks

Adrian Shaw


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>Comment By: Brian Carrier (carrier)
Date: 2009-04-26 22:19

Message:
Removed disktools from TSK. 

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Comment By: Brian Carrier (carrier)
Date: 2008-11-26 11:32

Message:
Because hdparm now shows much of the data displayed by disk_stat and there
are several open bugs on disk_stat that have not been fixed, I'm beginning
to be think that disktools should be abandoned unless someone else picks up
responsibility for them...

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=477889&aid=2351405&group_id=55685