Re: [Fedora Installation Guide] #4: Beginning the Installation - Chapter 4 update

[A. Mani]

"Fedora Installation Guide" <trac(a)fedorahosted.org&gt; wrote:
>  #4: Beginning the Installation - Chapter 4 update
>  ----------------------+-----------------------------------------------------
>   Reporter:  quaid    |       Owner:  soulspecter
>       Type:  task     |      Status:  new
>   Priority:  major    |   Milestone:  RC-ready
>   Component:  Content  |     Version:  10.0.0
>  Resolution:           |    Keywords:
>  ----------------------+-----------------------------------------------------
>  Comment (by soulspecter):
>   In section 4.3 we should probably make note that:
>
>   "BitTorrent Automatically Verifies File Integrity
>   If you use BitTorrent, any files you download are automatically validated.
>   If your file completes downloading you do not need to check it. Once you 
Many BitTorrent clients (including Ktorrent) do not perform automatic
verification. They must be asked to check data integrity.

>   burn your CD or DVD, however, during the installation you should
> still use
>   mediacheck to verify the integrity of the media."
>  
Best

A. Mani



-- 
A. Mani
Member, Cal. Math. Soc

[Fedora Installation Guide] #4: Beginning the Installation - Chapter 4 update

[Paul W. Frields]

On Mon, 2008-10-20 at 04:06 +0530, Mani A wrote:
>  "Fedora Installation Guide" <trac(a)fedorahosted.org&gt;
> wrote:
>  > #4: Beginning the Installation - Chapter 4 update
>  > ----------------------+-----------------------------------------------------
>  >  Reporter:  quaid    |       Owner:  soulspecter
>  >      Type:  task     |      Status:  new
>  >  Priority:  major    |   Milestone:  RC-ready
>  >  Component:  Content  |     Version:  10.0.0
>  > Resolution:           |    Keywords:
>  > ----------------------+-----------------------------------------------------
>  > Comment (by soulspecter):
>  >  In section 4.3 we should probably make note that:
>  >
>  >  "BitTorrent Automatically Verifies File Integrity
>  >  If you use BitTorrent, any files you download are automatically validated.
>  >  If your file completes downloading you do not need to check it. Once you
>  
>  Many BitTorrent clients (including Ktorrent) do not perform automatic
>  verification. They must be asked to check data integrity. 
Are you certain about that?  This is part of the BitTorrent protocol
itself AIUI, not the application level.  The only want for *any*
BitTorrent client to know it got a correct, complete chunk is to check
the sha1sum for that chunk.  Which means that, by definition, if you
have completed all chunks, your file has been automatically validated.
I think this text is correct as written.

-- 
Paul W. Frields
  gpg fingerprint: 3DA6 A0AC 6D58 FEC4 0233  5906 ACDB C937 BD11 3717
  http://paul.frields.org/   -  -   http://pfrields.fedorapeople.org/
  irc.freenode.net: stickster @ #fedora-docs, #fedora-devel, #fredlug

[Fedora Installation Guide] #4: Beginning the Installation - Chapter 4 update

[Rahul Sundaram]

Paul W. Frields wrote:
>  On Mon, 2008-10-20 at 04:06 +0530, Mani A wrote:
> > "Fedora Installation Guide" <trac(a)fedorahosted.org&gt; wrote:
> >> #4: Beginning the Installation - Chapter 4 update
> >> ----------------------+-----------------------------------------------------
> >>  Reporter:  quaid    |       Owner:  soulspecter
> >>      Type:  task     |      Status:  new
> >>  Priority:  major    |   Milestone:  RC-ready
> >>  Component:  Content  |     Version:  10.0.0
> >> Resolution:           |    Keywords:
> >> ----------------------+-----------------------------------------------------
> >> Comment (by soulspecter):
> >>  In section 4.3 we should probably make note that:
> >>
> >>  "BitTorrent Automatically Verifies File Integrity
> >>  If you use BitTorrent, any files you download are automatically validated.
> >>  If your file completes downloading you do not need to check it. Once you
> > Many BitTorrent clients (including Ktorrent) do not perform automatic
> > verification. They must be asked to check data integrity.
>  
>  Are you certain about that?  This is part of the BitTorrent protocol
>  itself AIUI, not the application level.  The only want for *any*
>  BitTorrent client to know it got a correct, complete chunk is to check
>  the sha1sum for that chunk.  Which means that, by definition, if you
>  have completed all chunks, your file has been automatically validated.
>  I think this text is correct as written. 
That's correct. Any bittorrent client has to do this automatically. It 
is a inherent property of the protocol.

Rahul