[OpenAFS] OpenAFS vs IBM AFS
Jeffrey E Altman
jaltman@auristor.com
Fri, 12 Aug 2022 13:32:35 -0400
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On 8/12/2022 12:50 PM, Ben Huntsman (ben@huntsmans.net) wrote:
> Hi guys-
>
> So I know IBM released the AFS code to the community at the
> beginning and that is what became OpenAFS. But from various release
> notes on the IBM site, it would seem that IBM continued (and
> continues) to develop its own AFS internally as well.
>
> Does anyone know how far the IBM vs OpenAFS code bases have
> diverged? I know they at least have more AIX ports than the OpenAFS
> code currently does...
IBM released OpenAFS 1.0 on 31 Oct 2000. That release was a fork from
IBM AFS 3.6. The fork itself at this point was substantial. IBM had to
clean the code base before it could be released. The diff stat between
these releases was not inconsequential.
IBM has continued development of IBM AFS 3.6. There has been no effort
to synchronize with OpenAFS. They are very much independent creatures
at this point. Since the openafs-ibm-1_0 release OpenAFS has undergone
substantial change
6127 files changed, 1308387 insertions(+), 567306 deletions(-)
>
> Does anyone know anyone at IBM that could be asked if IBM would be
> willing to re-contribute it's current codebase?
>
Yes we know people and they know us. It wouldn't be worth asking.
There is simply too much churn to merge code changes.
At best, concepts and features added to IBM AFS 3.6pXXX could be
re-implemented in OpenAFS.
Jeffrey Altman
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<div class="moz-cite-prefix">On 8/12/2022 12:50 PM, Ben Huntsman
(<a class="moz-txt-link-abbreviated" href="mailto:ben@huntsmans.net">ben@huntsmans.net</a>) wrote:<br>
</div>
<blockquote type="cite"
cite="mid:MWHPR0701MB36742051C6F9A41653E985ACA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
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Hi guys-</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
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<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
So I know IBM released the AFS code to the community at the
beginning and that is what became OpenAFS. But from various
release notes on the IBM site, it would seem that IBM continued
(and continues) to develop its own AFS internally as well. <br>
</div>
</blockquote>
<blockquote type="cite"
cite="mid:MWHPR0701MB36742051C6F9A41653E985ACA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
Does anyone know how far the IBM vs OpenAFS code bases have
diverged? I know they at least have more AIX ports than the
OpenAFS code currently does...</div>
</blockquote>
<p>IBM released OpenAFS 1.0 on 31 Oct 2000. That release was a
fork from IBM AFS 3.6. The fork itself at this point was
substantial. IBM had to clean the code base before it could be
released. The diff stat between these releases was not
inconsequential.</p>
<p><br>
</p>
<p>IBM has continued development of IBM AFS 3.6. There has been no
effort to synchronize with OpenAFS. They are very much
independent creatures at this point. Since the openafs-ibm-1_0
release OpenAFS has undergone substantial change</p>
<p><br>
</p>
<p> 6127 files changed, 1308387 insertions(+), 567306 deletions(-)<br>
</p>
<blockquote type="cite"
cite="mid:MWHPR0701MB36742051C6F9A41653E985ACA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
Does anyone know anyone at IBM that could be asked if IBM
would be willing to re-contribute it's current codebase?</div>
<br>
</blockquote>
<p>Yes we know people and they know us. It wouldn't be worth
asking. There is simply too much churn to merge code changes.</p>
<p>At best, concepts and features added to IBM AFS 3.6pXXX could be
re-implemented in OpenAFS.</p>
<p><br>
</p>
<p>Jeffrey Altman</p>
<p><br>
</p>
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