kvm外置鏡像快照 (cloudstack)

腳本詳見 https://github.com/apache/cloudstack/blob/master/scripts/storage/qcow2/managesnapshot.sh

系統環境

# cat /etc/redhat-release 
CentOS Linux release 7.1.1503 (Core)

qemu-img版本

#rpm -qa qemu-img
qemu-img-1.5.3-86.el7_1.2.x86_64

使用方法:

#./managesnapshot.sh 
Usage: managesnapshot.sh: -c <path to disk> -n <snapshot name>
Usage: managesnapshot.sh: -d <path to disk> -n <snapshot name>
Usage: managesnapshot.sh: -r <path to disk> -n <snapshot name>
Usage: managesnapshot.sh: -b <path to disk> -n <snapshot name> -p <dest dir> -t <dest file>

對qcow2鏡像操作如下:
創建快照

#./managesnapshot.sh -c centos6.6.qcow2 -n clean

備份快照至新的鏡像

#./managesnapshot.sh -b centos6.6.qcow2 -n clean -p . -t clean.qcow2

恢復鏡像中快照

#./managesnapshot.sh -r centos6.6.qcow2 -n clean

可以使用 qemu-img info xxx.qcow2 查看內部快照

刪除鏡像中的快照

#./managesnapshot.sh -d centos6.6.qcow2 -n clean