Re: extcarve - ext2,ext3,ext4 file carving tool

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On Wed, Jun 15, 2011 at 12:20 AM, Lakshmipathi.G
<lakshmipathi.g@xxxxxxxxx> wrote:
>
> On Wed, Jun 15, 2011 at 2:04 AM, Andreas Dilger <adilger@xxxxxxxxx> wrote:
>>
>> Since ext3/4 work hard to allocate file blocks contiguously, it makes
>> sense to
>> assume that after the header blocks the file blocks will be present.
>>  While
>> this is less likely to be true as the file size increases, for ext4 it is
>> usually true for files smaller than a few MB, which is many of them.
>
> Thanks for the clarification. On ext4,I believe an extent can address upto
> 128MB.  So I assume, for a file of size 50MB ,there is possibility this will
> be stored contiguously. Is that correct assumption? and  If we  mounted ext3
> as ext4, will the inode become extent based rather than the old
> direct/indirect block accessing method?
>

My file system is ext3.

In addition, my partition size is very large, it is 400GB. Is that a problem?

I tried extcarve at two machines, both got the same results, i.e.,
only generated some 4KB non-sense files there.

Jidong

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