KVM快照管理

[root@kvm1 ~]# virsh
virsh # list --all
 Id    Name                           State
----------------------------------------------------
 5     oa                             running
 -     centos6.10a1                   shut off
 -     centos6b                       shut off
 -     erp                            shut off
 -     win2k3a                        shut off

virsh # dominfo centos6b
Id:             -
Name:           centos6b
UUID:           510a8fbf-ec20-4bcf-9009-40bf5544e93b
OS Type:        hvm
State:          shut off
CPU(s):         1
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: none
Security DOI:   0

virsh # domblklist centos6b
Target     Source
------------------------------------------------
vda        /vm/centos6.10b.qcow2
hda        -
[root@kvm1 ~]# qemu-img snapshot -l /vm/centos6.10b.qcow2
[root@kvm1 ~]# qemu-img snapshot -c s1  /vm/centos6.10b.qcow2
[root@kvm1 ~]# qemu-img snapshot -l /vm/centos6.10b.qcow2
Snapshot list:
ID        TAG                 VM SIZE                DATE       VM CLOCK
1         s1                        0 2022-06-06 14:59:14   00:00:00.000
[root@kvm1 ~]# qemu-img snapshot -c s2  /vm/centos6.10b.qcow2    #创建快照
[root@kvm1 ~]# qemu-img snapshot -l /vm/centos6.10b.qcow2
Snapshot list:
ID        TAG                 VM SIZE                DATE       VM CLOCK
1         s1                        0 2022-06-06 14:59:14   00:00:00.000
2         s2                        0 2022-06-06 15:03:30   00:00:00.000
[root@kvm1 vm]# qemu-img snapshot -l centos6.10b.qcow2          #列出快照
Snapshot list:
ID        TAG                 VM SIZE                DATE       VM CLOCK
1         s1                        0 2022-06-06 14:59:14   00:00:00.000
2         s2                        0 2022-06-06 15:03:30   00:00:00.000
[root@kvm1 vm]# qemu-img snapshot -a s1 centos6.10b.qcow2
[root@kvm1 vm]# qemu-img snapshot -a s2 centos6.10b.qcow2    #恢复快照