kvm虚拟化-空间清理

空间清理
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/3600508b1001c23bf4a411df7ebcbd39b1 3.6T 3.1T 330G 91% /kvm-fs
/dev/mapper/364817127857579b84bfe75131aabe764p1 4.0T 4.0T 36K 100% /kvm-fs3
/dev/mapper/exchange-exchange 14T 11T 3.3T 77% /exchange
/dev/mapper/kvm--fs-kvm--fs 5.0T 2.4T 2.6T 49% /kvm-fs2

 

# virsh domblklist NFS-PUBLICE-10.15.0.91
Target Source
------------------------------------------------
hda /kvm-fs2/Public-nfs-disk1.qcow2
hdb /kvm-fs2/Public-nfs-disk2.qcow2
hdc /kvm-fs3/nfs-disk02.qcow2
hdd /kvm-fs3/nfs-disk03.qcow2

# mv nfs-disk02.qcow2 /kvm-fs2/

编辑虚拟机配置文件
virsh edit NFS-PUBLICE-10.15.0.91

# cat /etc/libvirt/qemu/NFS-PUBLICE-10.15.0.91.xml |grep -C 5 "source file"
</pm>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/kvm-fs2/Public-nfs-disk1.qcow2'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/kvm-fs2/Public-nfs-disk2.qcow2'/>
<target dev='hdb' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/kvm-fs3/nfs-disk02.qcow2'/>
<target dev='hdc' bus='ide'/>
<address type='drive' controller='0' bus='1' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/kvm-fs3/nfs-disk03.qcow2'/>
<target dev='hdd' bus='ide'/>
<address type='drive' controller='0' bus='1' target='0' unit='1'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>