[pve-devel] qemu-server changes

[Alexandre DERUMIER]

>>I thought about adding a hotplug flag to the $confdesc, indicating if an 
>>option can be used when a VM is running: 

>>hotplug => 0; never use this option when a VM is running (usb) 
>>hotplug => 1; check if hotplug option is set (scsi, virtio) 
>>hotplug = 2; always hotplug (boot, onboot, description, ..) 

>>what do you think? 

yes, good idea!

I can make a patch if you wan't.

----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Lundi 6 Février 2012 06:47:40 
Objet: RE: qemu-server changes 

> >>Else a device simply vanish from the configuration, and this is very 
> >>confusing on the GUI! 
> 
> ok, I understand what you mean. 
> 
> My point was that config file should reflect what is really plugged in running vm. 
> For me, that's more confusing to display a device in gui, if it not really yet 
> available until next reboot. 
> 
> Also, if hotplug fail, and device is in conf, we cannot retry to hotplug it or unplug 
> it,without manual config file edit to remove it. 

A hot-remove followed by a hot-add should work? But sure, I also see your point. 

I just thought the probability of a hotplug failure is small. 

> >>What can make hotplug fail exactly (beside bugs in KVM)? 
> 
> mmm,indeed, I didn't see a hotplug/unplug fail since a while...(doesn't see it 
> with qemu 1.0 I think). 
> 
> So maybe can we try like this, and see if it's works fine for proxmox users ? 

We need to make is more reliable, for example disable ide hotplug, and disable 'user' 
network hotplug. 

I thought about adding a hotplug flag to the $confdesc, indicating if an 
option can be used when a VM is running: 

hotplug => 0; never use this option when a VM is running (usb) 
hotplug => 1; check if hotplug option is set (scsi, virtio) 
hotplug = 2; always hotplug (boot, onboot, description, ..) 

what do you think? 

- Dietmar 



-- 

-- 




	
	Alexandre Derumier 
Ingénieur système 
e-mail : aderumier at odiso.com 
Tél : +33 (0)3 20 68 88 90 
Fax : +33 (0)3 20 68 90 81 
45 Bvd du Général Leclerc 
59100 ROUBAIX - FRANCE 













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