[root@development ~]# xm listName                                      ID Mem(MiB) VCPUs State   Time(s)Domain-0                                   0     1735     2 r-----   1194.1

create a virtual harddisk

[root@development ~]# mkdir /srv/vm/[root@development ~]# dd if=/dev/zero of=/srv/vm/centos.img bs=1M count=40964096+0 records in4096+0 records out4294967296 bytes (4.3 GB) copied, 49.2547 seconds, 87.2 MB/s

ubuntu

[root@development ~]# virt-install -n centos -r 256 -f /srv/vm/centos.img --nographics -l ftp://192.168.3.9/pub/