[PVE-User] Disk array on Fiber channel & Thin provisionning & Storage LVM

Jean-Laurent Ivars jl.ivars at ipgenius.fr
Thu Oct 23 14:36:18 CEST 2014


Bonjour,

Regardez la page de la doc sur le stockage vous verrez quels types de stockages sont supportés et leur limitations respectives. (grosso modo y a toujours un compromis à faire que ce soit sur les perf(nfs) ou la flexibilité (thin provisionning, perf des backups, snapshots…)

bien cordialement

http://pve.proxmox.com/wiki/Storage_Model <http://pve.proxmox.com/wiki/Storage_Model>

look at the link i provided, it gives information on witch storage allow witch functionality… 

best regards

	
Jean-Laurent Ivars 
Responsable Technique | Technical Manager
22, rue Robert - 13007 Marseille 
Mobile: 06.52.60.86.47 - Tel: 09 84 56 64 30 - Fax: 09 89 56 64 30 
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> Le 23 oct. 2014 à 11:45, Cédric Bernard <cbernard at sisteer.com <mailto:cbernard at sisteer.com>> a écrit :
> 
> Hello,
> 
> I have a disk array connected to my HA Proxmox infrastructure with 4 hosts on Fiber Channel and I configure the Thin provisionning on the LUNs. On Proxmox, I created the LVM storage with the Volum Group containing the PVs connected to the LUNs.
> With this method, I can't use 100% of the thin provisionning option because on Proxmox, the LVM storage reserve 100% allocated disks to the VMs.
> 
> For example, on my disk array, I created a LUN of 400 Gb, only 260 Gb are allocated. On the Proxmox infra, there is 340 Gb used on the total of 400 Gb. So, I can't benefit from the thin provisionning option entirely.
> 
> Do you know if there is a better method concerning the storage to configure and use regarding a disk array connected on Fiber Channel to benefit from the thin provisionning option please ?
> 
> Best Regards,
> -- 
> Cédric Bernard | Network and System Architect
> 
> 
> 
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