Install 4.4 to ZFS Raidz2 fail to boot

Hello,

I want to install Proxmox 4.4 on a ZFS raidz2 on a four (4) disk system. I proceed with the installation using the proxmox iso and a usb key. The installation went smooth, but the system cannot properly start. It drop into Busybox.

Help to properly re-import the pool whould be nice. See screenshot:

Screenshot - 010117 - 10:58:01 AM.png