linux 虚拟lvm实验

创建2个空的磁盘镜像文件 dd if=/dev/zero of=lvm_pv1.img bs=512K count=40K

挂载为循环设备 losetup /dev/loop0 /work/vdisk/lvm_virtual_pv1.img

格式化为lvm2格式

fdisk /dev/loop0

n->p--> t-->8e-->w

创建物理卷 sudo pvcreate /dev/loop1 Physical volume "/dev/loop1" successfully created

sudo pvdisplay --- Physical volume --- PV Name /dev/sda5 VG Name ubuntu PV Size 465.52 GiB / not usable 2.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 119173 Free PE 12 Allocated PE 119161 PV UUID FeGzCf-r8Ix-1iGR-D3VP-zGtL-xasU-NH0OCi

"/dev/loop0" is a new physical volume of "20.00 GiB" --- NEW Physical volume --- PV Name /dev/loop0 VG Name
PV Size 20.00 GiB Allocatable NO PE Size 0
Total PE 0 Free PE 0 Allocated PE 0 PV UUID sBbkDf-vN96-Kdi6-cis4-M1BW-emx9-e6c8ab

"/dev/loop1" is a new physical volume of "10.00 GiB" --- NEW Physical volume --- PV Name /dev/loop1 VG Name
PV Size 10.00 GiB Allocatable NO PE Size 0
Total PE 0 Free PE 0 Allocated PE 0 PV UUID dEdfLg-OePh-jJp0-UKai-IuPx-e1Lw-ag0VFx

sudo virsh pool-define /etc/libvirt/storage/lvm_pool.xml

sudo virsh pool-build lvm_pool sudo virsh pool-start lvm_pool