ゲストOSのディスク拡張するよ! -ホスト側 ゲストOSを停止 cd /var/lib/libvirt/images/ qemu-img info orecentos6-1.qcow2 qemu-img resize orecentos6-1.qcow2 +500G qemu-img info orecentos6-1.qcow2 ゲストOSを起動 -ゲストOS側 ゲストOSでfdiskでパーティションを拡張 fdisk -l fdisk /dev/vda Command (m for help): p Disk /dev/vda: 1106.0 GB, 1105954078720 bytes 16 heads, 63 sectors/track, 2142923 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000c8ed1 Device Boot Start End Blocks Id System /dev/vda1 * 3 1018 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/vda2 1018 1102669 555232152 83 Linux Command (m for help): d Partition number (1-4): 2 Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 2 First cylinder (1-2142923, default 1): 1018 Last cylinder, +c