[pve-devel] copy_vm: new option -target

[Stefan Priebe - Profihost AG]

Am 03.05.2013 10:56, schrieb Alexandre DERUMIER:
>>> Linked clones are buggy with bobtail and will not be fixed before 
>>> cuttlefish. So right now they're not usable. Also i'm mainly using 
>>> templates with empty disks so they're not really linked at all i just 
>>> use the templates as predefined settings. 
> 
> Oh ok, good to known !
> 
> 
> As workaround, for now, maybe can you use qcow2 file as template ?
> They use no space, and I think it should work to create sparse rbd target volume

Good idea - thanks.

Stefan


> ----- Mail original ----- 
> 
> De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
> À: "Alexandre DERUMIER" <aderumier at odiso.com> 
> Cc: pve-devel at pve.proxmox.com, "Dietmar Maurer" <dietmar at proxmox.com> 
> Envoyé: Vendredi 3 Mai 2013 10:14:08 
> Objet: Re: [pve-devel] copy_vm: new option -target 
> 
> Hi, 
> 
> Am 03.05.2013 10:11, schrieb Alexandre DERUMIER: 
>> Hi Stefan, 
>>
>> Just to known, why don't you use linked clone ? (Do you have tried it, does it work fine with rbd ? are io/s good ?) 
> 
> Linked clones are buggy with bobtail and will not be fixed before 
> cuttlefish. So right now they're not usable. Also i'm mainly using 
> templates with empty disks so they're not really linked at all i just 
> use the templates as predefined settings. 
> 
>> Another idea for later, we could also implement: 
>> 1)rbd clone 
>> 2)rbd flatten (this detach the clone from the parent, copying data from parent to child) 
>>
>>
>> Same can be use with nexenta for "full clone" from a snapshot. 
>>
>>
>> I could be also usefull to detach an existing linked clone (it's also possible with qcow2 clone I think) 
> Yes that might be a really cool feature. 
> 
> Stefan 
> 
>>
>> ----- Mail original ----- 
>>
>> De: "Dietmar Maurer" <dietmar at proxmox.com> 
>> À: "Alexandre DERUMIER" <aderumier at odiso.com> 
>> Cc: pve-devel at pve.proxmox.com, "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
>> Envoyé: Vendredi 3 Mai 2013 08:42:25 
>> Objet: RE: [pve-devel] copy_vm: new option -target 
>>
>>>>> Should be possible to fix qemu-img? 
>>> Yes, I think it should be possible. Code is not so huge. 
>>>
>>> But Maybe do you have a better understanding of the code. (As you have played 
>>> with backup ;) 
>>
>> Maybe, but I need to make the other things stable first (this is only an 'optimization') 
>>