[oi-dev] [developer] suspend/resume in Illumos

[randyf at sibernet.com]

On Tue, 11 Jun 2019, Garrett D'Amore wrote:

> 
> My gut instinct is that this isn’t that interesting – most everyone is running illumos in either VMs, or in datacenter applications where
> suspend/resume has little if any applicability.
> 
>  
> 
> While the work itself is probably interesting, and it may enable new applications for illumos, the concern I’d have would be detraction from
> other more pressing work, without any clear use cases for it.
>

   I should point out that s/r isn't just for laptop bare-metal.  It allows 
for a running instance of an OS to be frozen in an orderly manner (rather 
than a VM just pausing a guest, the guest suspends first).  S4 opens a 
different world of allowing said image to be more easily migrated, or 
(since it has roots in CPR) opens quick-boot images (imagine getting an 
OS fully booted in under 10 seconds).

>  
> 
> That said, if someone (you?) wanted to spend cycles on this for personal satisfaction, I hardly see any reason to discourage it, and I’m
> fairly certain if the risks of the new code being introduced are small (or well managed by sufficient testing for example), I can’t see any
> other reason we would reject a suitably formed RTI.
>

   Doubt I'll fully drop it, but without sufficient interest, it's is 
unlikely I'll give it much priority (certainly, my other 'dropped' project 
should have a higer priority).

   Cheers!

 	---- Randy

>  
> 
> Sent from Mail for Windows 10
> 
>  
> 
> From: randyf at sibernet.com
> Sent: Tuesday, June 11, 2019 11:10 AM
> To: oi-dev at openindiana.org; developer at lists.illumos.org
> Subject: [developer] suspend/resume in Illumos
> 
>  
> 
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> I have a question for developers here:
> 
>  
> 
>     How important is suspend/resume for OI/Illumos (including S4)?
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> One of the incomplete projects left behind was S4 (lack of need, and a
> 
> hard to identify bug stifled it's integration).  It is non-trivial, and
> 
> needs updated s/r core code (added configuration and significant
> 
> restructuring, as well as likely assistance from developers knowlegable in
> 
> other Illumos internals), but if this is an uninteresting feature, it is
> 
> likey not worth the effort (recent bugs suggest that few if anyone use
> 
> it); however, it wouldn't be too hard to resurect (though would still take
> 
> several months of work).
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>    Cheers!
> 
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> 
>         ---- Randy
> 
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> 
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