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

Cédric Bernard cbernard at sisteer.com
Thu Oct 23 11:45:43 CEST 2014


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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