KVM Virtual machine Snapshot (continuous update)

Snapshots used to be a common feature when using VMware and VirtualBox, and are also useful. KVM Virtual machine operation mode:

one, built-in snapshots

#  Create snapshot [[Email protected] ~]$ qemu-img snapshot -c networknode_ justinstall.img networknode.img #  viewing virtual machine snapshots [[email protected] ~]$ qemu-img  snapshot -l networknode.img snapshot list:id         TAG                  VM SIZE                 DATE       VM CLOCK1          networknode_justinstall.img      0 2014-11-29 17:55:47    00:00:00.000#  Deleting a virtual machine snapshot [[email protected] ~]$ qemu-img snapshot  -d networknode.img#  View virtual machine snapshots (no information is output by default when no snapshots are taken) [[email protected] ~]$ qemu-img  snapshot -l networknode.img&nbsP [[email protected] ~]$

Snapshot recovery, operating scenarios:

1. Perform a snapshot on a newly installed virtual machine (the steps above have already been done)

2. Remove all files from the/etc/directory on the virtual machine

# Launch virtual machine [[email protected] ~]$ qemu-kvm-m 4096-SMP 4-hda networknode.img

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3. Recovering a Snapshot

# View recoverable virtual machine snapshots [[email protected]t ~]$ qemu-img snapshot-l networknode.imgsnapshot list:id TAG VM SI ZE DATE VM CLOCK1 networknode_justinstall.img 0 2014-11-29 17:55:47 00:00:00.000# Recovery Snapshot [Email protected] ~]$ qemu-img snapshot-a networknode_justinstall.img networknode.img[[email protected] ~]$

4. See if the/etc/directory exists

# Launch virtual machine [[email protected] ~]$ qemu-kvm-m 4096-SMP 4-hda networknode.img

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This article is from the Software testing blog, so be sure to keep this source http://9614554.blog.51cto.com/9604554/1584538

KVM Virtual machine Snapshot (continuous update)