Update 08-snapshots.md

[samcharles93]

fixed changes to incus snapshot cli commands.

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[github-actions]

Test results for 0c31d61:

Number of broken URLs: 4

URL,RESULT,FILENAME
 http://example.org/foo.txt,failed,books/web_services/052-load-balancer-proxies-varnish.md
 https://azuremarketplace.microsoft.com/en-us/marketplace/apps/resf.rockylinux-aarch64,failed,guides/cloud/migration-to-new-azure-images.md
 http://0.0.0.0:61208/,failed,guides/network/glances_network_monitoring.md
 https://your.domain.name/install.php,failed,guides/cms/chyrp_lite.md

[SergeCroise]

@sspencerwire
see also
https://docs.rockylinux.org/books/lxd_server/08-snapshots/#the-snapshot-process

[sspencerwire]

Thanks very much @samcharles93

[sspencerwire]

@sspencerwire see also https://docs.rockylinux.org/books/lxd_server/08-snapshots/#the-snapshot-process

With LXD at least, "create" is assumed if you do not actually specify it:

lxc list
+--------------+---------+-----------------------+------+-----------+-----------+
|     NAME     |  STATE  |         IPV4          | IPV6 |   TYPE    | SNAPSHOTS |
+--------------+---------+-----------------------+------+-----------+-----------+
| mkdocs       | RUNNING | 10.187.219.224 (eth0) |      | CONTAINER | 0         |
+--------------+---------+-----------------------+------+-----------+-----------+
| mkdocs-new   | RUNNING | 10.187.219.193 (eth0) |      | CONTAINER | 0         |
+--------------+---------+-----------------------+------+-----------+-----------+
| test-version | RUNNING | 10.187.219.18 (eth0)  |      | CONTAINER | 0         |
+--------------+---------+-----------------------+------+-----------+-----------+
$ lxc snapshot mkdocs-new mkdocs-snap1
lxc list
+--------------+---------+-----------------------+------+-----------+-----------+
|     NAME     |  STATE  |         IPV4          | IPV6 |   TYPE    | SNAPSHOTS |
+--------------+---------+-----------------------+------+-----------+-----------+
| mkdocs       | RUNNING | 10.187.219.224 (eth0) |      | CONTAINER | 0         |
+--------------+---------+-----------------------+------+-----------+-----------+
| mkdocs-new   | RUNNING | 10.187.219.193 (eth0) |      | CONTAINER | 1         |
+--------------+---------+-----------------------+------+-----------+-----------+
| test-version | RUNNING | 10.187.219.18 (eth0)  |      | CONTAINER | 0         |
+--------------+---------+-----------------------+------+-----------+-----------+

As you can see above, the mkdocs-new container now has a snapshot.

Further, for whatever reason (with my LXD instance anyway) using the create keyword, doesn't work at all, and gives a usage command that shows using the "create" keyword. If I use it, however, I get this instead:

$ lxc snapshot create mkdocs-new snap2

shows the command help dialog, with this included as an example:

Examples:
lxc snapshot create u1 snap0
Create a snapshot of "u1" called "snap0".

and then:

Error: Invalid number of arguments

So my instance of LXD doesn't support the same command structure.