[Info-vax] DFU for x86-64?

Jan-Erik Söderholm jan-erik.soderholm at telia.com
Thu Apr 6 01:57:58 EDT 2023


Den 2023-04-05 kl. 15:29, skrev Arne Vajhøj:
> On 4/5/2023 9:21 AM, Dave Froble wrote:
>> On 4/5/2023 4:35 AM, Jan-Erik Söderholm wrote:
>>> Just heard a rumor that there is no plan for DFU on x86-64.
>>> Any comments on that?
>>
>> Perhaps the thought is that everyone is now using SSDs, and not so much 
>> need for DFU?
> 
> Many DFU features sounds relevant for SSD as well (just not defrag).
> 
> And even for defrag then VSI has ported DFG to x86-64 per:
>    https://vmssoftware.com/products/disk-file-optimizer/
> 
> Arne
> 

We (and the source where I heard this) only uses DFU for non-update
tasks. There are many nice search and report features in DFU. And
at least my source has a strict ban against using DFU for anything
that updates disk data.

My source is a major VMS user in Sweden that is in the work of their
IA64 to x86-64 migration. They goes through all their 3-party tools
and DFU has been "red-flagged".

My source wrote:

"DFU is unfortunately flagged red. Its a freeware and the maintainer
is not interested in porting this to x86-64. We have asked VSI but
have not got any positive answer. They are probably fully occupied
with their own software, and there might be parts of DFU that VSI
might not want to take responsability for, like DEFRAGMENT, MODIFY,
UNDELETE and VERIFY".

I have no idea if they actually have been in contact with the DFU
maintainer, or if that is hearsay. Or if they have got any other
reply from VSI apart from a "positive" one.

Probably not a show-stopper for the x86-64 migration (I think they
definitely will migrate), but might need rewrite of a few routines.

So, I guess the question is if there is someone else that would like
to pick up the DFU sources and try a x86 build...




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