[PVE-User] Proxmox is lying to me??

Sun Aug 17 18:31:48 CEST 2014

Hi, 

First of all, proxmox has nothing to do with this, because this is a linux/qemu feature and not the distribution.

My question: you created 13 snapshot on windows and the differences between them have zero space?

Normally windows change the data on the disk a lot of times per days.

For example:

logs,

active data of user apps,

virtual memory (this could be huge!)

So, my opinion, all changes of your 13 snapshot could be easily 160GB and that's all.

When you converted your qcow2 image to raw, you only got your recent data and drop all snapshots.

So, test the theory:

create backup,

delete each snapshot one by one, check the filesize

My general advice:

before you start using a framework like proxmox, you should learn some basics about the used techniques,

you should get experiences with windows to see for example, how often it touch the disk under your workload,

even it seems very easy to use proxmox and we all like it, that does not mean, one will be safe running such a system without knowledge

I guess it is a test machine and you are experimenting with proxmox. If it is a production system, cross fingers. :)

Anyway, personally I changed to ZFS on linux local filesystem, instead of the default or hardware raid or other software raid solutions. My benefits:

on the fly compression

unlimited snapshots for all kind of VMs

zero-time backup (with snapshot - 0 time instead of 8-10 hours heavy workload and it does not need a lot of free space)

off-site backup is easy

I was sick about the necessary backup time and workload, wasted space, slow remote backup etc.

Bye,

István

----------------eredeti üzenet----------------- 
Feladó: "Gilberto Nunes" gilberto.nunes32 at gmail.com 
Címzett: "Dietmar Maurer" dietmar at proxmox.com 
CC: "pve-user at pve.proxmox.com " 

Dátum: Fri, 15 Aug 2014 14:14:54 -0300 
----------------------------------------------------------

>
>
>Ok...
>
> 
>
>I have some snaps:
>
> 
>
>
>qemu-img info vm-100-disk-1.qcow2 
>
>image: vm-100-disk-1.qcow2
>
>file format: qcow2
>
>virtual size: 160G (171798691840 bytes)
>
>disk size: 319G
>
>cluster_size: 65536
>
>Snapshot list:
>
>ID TAG VM SIZE DATE VM CLOCK
>
>1 Teste 0 2014-03-22 20:00:23 00:29:10.883
>
>2 ApenasADlimpo 0 2014-03-22 20:06:22 00:35:08.841
>
>3 UsuariosADcriados 0 2014-03-22 20:45:56 01:14:42.334
>
>4 Sophos 0 2014-03-23 13:02:02 08:56:30.581
>
>5 XAMP 0 2014-03-23 17:37:47 03:41:09.184
>
>6 WTS 0 2014-03-23 18:19:48 04:23:07.400
>
>7 WTSFUNCIONANDOCOMLICENCA 0 2014-03-23 19:16:33 00:17:48.046
>
>8 Importacao90PORC 0 2014-03-24 00:23:15 05:24:27.904
>
>9 Tudocerto 0 2014-03-24 00:30:11 05:31:00.140
>
>10 Processador1 0 2014-03-24 09:53:51 14:54:36.060
>
>11 XAMPPCONFIG 0 2014-03-24 10:58:31 15:59:12.578
>
>12 AntesXAMPPSILVIO 0 2014-04-03 17:47:52 246:11:34.368
>
>13 SistemaAgora 0 2014-04-04 14:01:17 266:24:51.977
>
>Format specific information:
>
> compat: 1.1
>
> lazy refcounts: false
>
>
> 
>
> 
>
>But, as we can see on "VM SIZE" all ZERO!
>
>Still, I have disk size 319G! Why?
>
>
>
>
>2014-08-15 5:04 GMT-03:00 Dietmar Maurer dietmar at proxmox.com :
>
>
>> On Linux system, du -chs /var/lib/vz show me just 167GB...
> 
>This is the output from:
>
># qemu-img info ...
>
>> But, when I do ls -l /var/lib/vz/images/101/image.cqow2, show 319GB!!!
>>
>> I'm also confused on that!
> 
>Maybe you store snapshots?
>
>
>
>
>
> 
>-- 
>
>
>Obrigado
>
> 
>
>Cordialmente
>
> 
>
>Gilberto Ferreira
>
>
>
>Konnecta TI Tecnologia - Sistemas de Virtualização, Soluções de Armazenamento de 
>Dados, Criação de SAN/NAS, Zimbra Mail Server, Implantação de Linux e Windows server.
>
> 
>
>Fundação Softville
>
>Rua Otto Boehm, 48
>
>
>
>(47) 9676-7530
>
>
>Skype: gilberto.nunes36
>
> 
>
>[www.konnectati.com.br
>
>blog.konnectati.com.br -> http://www.konnectati.com.br/]
>
>
>
>
>
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