Re: [qubes-devel] Re: Is there a way to save dispvm snapshots for fast startup?

2017-11-09 Thread Marek Marczykowski-Górecki 
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Hash: SHA256

On Thu, Nov 09, 2017 at 10:52:43PM +0800, Elias Mårtenson wrote:
> On 9 Nov 2017 9:33 pm, "blacklight"  wrote:
> 
> 
> qubes never had these snapshots you mentionded, but were you refering to
> the dvm images?
> 
> 
> Perhaps. It certainly did something that made DVM's start really quickly.
> Definitely faster thaw a normal VM. I always assumed it took a snapshot
> after booting, but I could be wrong. I would very much like to know what it
> did.
> 
> Whatever it did, it certainly made the experience of using DVM's much
> nicer, and the question is if something similar is available in 4.0?

Currently not. We'll work on improving DispVM performance, but after
final 4.0 release. Some ideas include:
 - having PVHv2 really working (it will cut stubdomain and bootloader
   out of boot process - about 1-2s improvement)
 - pre-starting a DispVM so it sits there ready for use[2] - this have
   noticeable memory impact, but similar to 3.2 - copy of the savefile
   is stored in dom0 RAM

As for qrexec timeouts, this is unrelated issue[1], which we have some
(hopefully sufficient) fix - it will land in testing repo today.

[1] https://github.com/QubesOS/qubes-issues/issues/3221
[2] https://github.com/QubesOS/qubes-issues/issues/1512

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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Re: [qubes-devel] Re: Is there a way to save dispvm snapshots for fast startup?

2017-11-09 Thread Elias Mårtenson 
On 9 Nov 2017 9:33 pm, "blacklight"  wrote:


qubes never had these snapshots you mentionded, but were you refering to
the dvm images?


Perhaps. It certainly did something that made DVM's start really quickly.
Definitely faster thaw a normal VM. I always assumed it took a snapshot
after booting, but I could be wrong. I would very much like to know what it
did.

Whatever it did, it certainly made the experience of using DVM's much
nicer, and the question is if something similar is available in 4.0?

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[qubes-devel] Re: Is there a way to save dispvm snapshots for fast startup?

2017-11-09 Thread blacklight 


On Thursday, 9 November 2017 10:46:52 UTC, Elias Mårtenson wrote:
>
> Qubes 3.2 supported snapshots that made starting up a dispvm very fast. 
> This functionality seems to have disappeared in 4.0. Is there a way to do 
> something similar now?
>
> If I'm lucky, a dispvm starts in about 30 seconds. If I'm unlucky it 
> doesn't start at all (rexec timeout, I think) and I have to try again. 
> Getting the snapshot behaviour from 3.2 would be very helpful.
>
> Regards,
> Elias
>

qubes never had these snapshots you mentionded, but were you refering to 
the dvm images? 

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Re: [qubes-devel] Where does Qubes 4 store the VM images?

2017-11-09 Thread Elias Mårtenson 
On Wednesday, 8 November 2017 21:11:39 UTC+8, Marek Marczykowski-Górecki 
wrote:
 

> sudo lvs qubes_dom0/pool00


Thank you very much. It makes much more sense now. I can see how the new 
system is much more powerful than the old behaviour.

Regards,
Elias 

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[qubes-devel] Is there a way to save dispvm snapshots for fast startup?

2017-11-09 Thread Elias Mårtenson 
Qubes 3.2 supported snapshots that made starting up a dispvm very fast. 
This functionality seems to have disappeared in 4.0. Is there a way to do 
something similar now?

If I'm lucky, a dispvm starts in about 30 seconds. If I'm unlucky it 
doesn't start at all (rexec timeout, I think) and I have to try again. 
Getting the snapshot behaviour from 3.2 would be very helpful.

Regards,
Elias

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