[OpenAFS] re: my afs wish list

Derrick J Brashear shadow@dementia.org
Wed, 30 Apr 2003 20:33:30 -0400 (EDT)


On Wed, 30 Apr 2003, Dean Anderson wrote:

> Yes, I think that's right. This was a known issue that was to be
> resolved/decided later.  How tightly integrated to make Kerberos had been
> a question for both DCE and AFS. Many people wanted to run generic KDCs.
> You couldn't possibly do that if you changed the protocols used by
> Kerberos. As I recall, you couldn't use a generic KDC with either DCE or
> Transarc AFS, but I think they wanted to have that capability some day.
> Looks like OpenAFS can just about do that.

If you forgo klog, and use kinit, AFS long before OpenAFS could use a
kerberos v4 kdc. Ask MIT.

> reference platforms.  One of the early characteristics of risc machines
> was the "unaligned access trap". Risc gets some of it simplicity by not
> allowing words to be unaligned. An integer has to be stored on a word
> boundary in memory. In C structures, though, things are not aligned this
> way. In the old days, porting some software to a risc machine was plagued
> with "Unaligned Access violations". You had to find the structure, and add

I assume this is why Ultrix tried to be "helpful". I have 3 words for you:
uac p 0

> resumed the program as though nothing happened.  This took a toll on
> performance, so we put a kernel printf to warn the user.  With some
> cajoling, and the printf, I got this into the mainline OSF/1 code.  DEC

Oh, so I guess they backported this. I think this was Ultrix 4.2a.