From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Haxby <john.haxby@oracle.com>
Subject: Re: why sector number not match block number?
Date: Tue, 09 Jun 2009 09:49:23 +0100
Message-ID: <4A2E2213.7000104@oracle.com>
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To: Sucan Zhang <bitzsk@gmail.com>
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Sucan Zhang wrote:
> and then to show sector number i had written, i expect to see 78B51 or 
> 78B52 sector number. but none of then display, can you tell me why?

I believe you need to add the offset of the partition in which the file 
is located.   If you're using LVM then you'll also need to go through 
the physical extent mapping shown by lvdisplay -m.

jch