[PVE-User] unable to detect disk size - please specify rootfs (size

[Dietmar Maurer]

> extracting archive 
> '/var/lib/vz/dump/vzdump-lxc-111-2016_01_28-00_16_49.tar.lzo'
> Total bytes read: 1089372160 (1.1GiB, 234MiB / s)
> Detected container architecture: amd64
> unable to open file '/etc/pve/firewall/100.fw.tmp.2950' - No such file 

Does it help if you create the firewall directory first?

# mkdir /etc/pve/firewall