[OpenAFS] OpenAFS vs IBM AFS
Jeffrey E Altman
jaltman@auristor.com
Fri, 12 Aug 2022 14:23:24 -0400
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On 8/12/2022 2:01 PM, Ben Huntsman (ben@huntsmans.net) wrote:
> That is about what I thought. I guess I ask because for those of
> us who work more with AIX than the other platforms, it would be
> interesting and valuable to be able to track the IBM code base as
> well, even if that were kept in a separate repository from OpenAFS.
I'm not sure how tracking the IBM code base is all that helpful. The IBM
AFS client does not support new RPCs added to OpenAFS nor does it
include the most of the other changes. In the end its the developer
time and access to AIX systems and development tools that are required
to support an AFS client and server. If there is an end user community
for an AIX AFS client, then it would be helpful if that community would
provide resources to OpenAFS to make it happen.
>
> I'm also very interested in what it took to clean the code base to
> achieve the 1.0 release. I know some things were removed such as that
> washtool thing, and the special version of AIX's fsck that is AFS-aware.
The primary changes were to remove code that IBM didn't have permission
to re-license, comments that referenced customers, or functionality that
was specific to certain private builds, and any references to
individuals by name. There was more but that was the practical work.
Reviewing a million line code base so legal can sign off on things is a
lot of work.
> But that was a long time ago. I wonder if times have changed and if
> there would be fewer legal and technical hurdles to releasing some of
> those things?
I doubt it. All of the original work would need to be repeated.
> The AIX AFS-aware fsck would be worthwhile even now.
I disagree. In OpenAFS any validation of the contents of the Volume
Group object stores located in the vice partition file systems should be
performed by the on-demand salvager. There should be no need to run an
external tool while the services are shutdown.
Jeffrey Altman
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<div class="moz-cite-prefix">On 8/12/2022 2:01 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:MWHPR0701MB3674EA70EADDD74EB2A315DAA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css" style="display:none;">P {margin-top:0;margin-bottom:0;}</style>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
That is about what I thought. I guess I ask because for
those of us who work more with AIX than the other platforms, it
would be interesting and valuable to be able to track the IBM
code base as well, even if that were kept in a separate
repository from OpenAFS.</div>
</blockquote>
I'm not sure how tracking the IBM code base is all that helpful.
The IBM AFS client does not support new RPCs added to OpenAFS nor
does it include the most of the other changes. In the end its the
developer time and access to AIX systems and development tools that
are required to support an AFS client and server. If there is an
end user community for an AIX AFS client, then it would be helpful
if that community would provide resources to OpenAFS to make it
happen.<br>
<blockquote type="cite"
cite="mid:MWHPR0701MB3674EA70EADDD74EB2A315DAA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
</div>
<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">
I'm also very interested in what it took to clean the code
base to achieve the 1.0 release. I know some things were
removed such as that washtool thing, and the special version of
AIX's fsck that is AFS-aware. </div>
</blockquote>
The primary changes were to remove code that IBM didn't have
permission to re-license, comments that referenced customers, or
functionality that was specific to certain private builds, and any
references to individuals by name. There was more but that was
the practical work. Reviewing a million line code base so legal can
sign off on things is a lot of work.<br>
<blockquote type="cite"
cite="mid:MWHPR0701MB3674EA70EADDD74EB2A315DAA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">But
that was a long time ago. I wonder if times have changed and if
there would be fewer legal and technical hurdles to releasing
some of those things? </div>
</blockquote>
<p>I doubt it. All of the original work would need to be repeated.<br>
</p>
<blockquote type="cite"
cite="mid:MWHPR0701MB3674EA70EADDD74EB2A315DAA7679@MWHPR0701MB3674.namprd07.prod.outlook.com">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">The
AIX AFS-aware fsck would be worthwhile even now.</div>
</blockquote>
I disagree. In OpenAFS any validation of the contents of the Volume
Group object stores located in the vice partition file systems
should be performed by the on-demand salvager. There should be no
need to run an external tool while the services are shutdown.<br>
<p><br>
</p>
<p>Jeffrey Altman</p>
<p><br>
</p>
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