tripleo-docs/deploy-guide/source/post_deployment/vm_snapshot.rst
Alex Schultz c6918e5da6 Migrate install to deploy-guide
The deployment guide is currently pointed at triplo-docs but it has been
requested that we actually publish a deployment guide. This change
extracts many of the installation doc pages and moves them into the
deploy-guide source tree.  Once the deploy-guide is published, we will
follow up to reference the deployment guide from tripleo-docs.

Change-Id: I0ebd26f014180a92c6cf4ab0929d99b2d860796f
2019-08-16 15:42:17 -06:00

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Import/Export of VM Snapshots
=============================
Create a snapshot of a running server
-------------------------------------
Create a new image by taking a snapshot of a running server and download the
image.
::
nova image-create instance_name image_name
glance image-download image_name --file exported_vm.qcow2
Import an image into Overcloud and launch an instance
-----------------------------------------------------
Upload the exported image into glance in Overcloud and launch a new instance.
::
glance image-create --name imported_image --file exported_vm.qcow2 --disk-format qcow2 --container-format bare
nova boot --poll --key-name default --flavor m1.demo --image imported_image --nic net-id=net_id imported
.. note::
**Warning**: disadvantage of using glance image for export/import VMs is
that each VM disk has to be copied in and out into glance in source and
target clouds. Also by making snapshot qcow layering system is lost.