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<div> Hello,everyone<br><br>    I have some questions about OpenStack Nova Compute(Essex).<br>    <br>    According the Nova API Docs(http://api.openstack.org/),I sent stop command to my vm<br>    instance like follows:<br>    <br>    <span style="font-style: italic;">curl -i -X POST -H "Content-Type: application/json" -H 'X-Auth-Token:<my token>'  \</span><br style="font-style: italic;"><span style="font-style: italic;">            -d '{"os-stop":null} ' \</span><br style="font-style: italic;"><span style="font-style: italic;">            http://localhost:8774/v1.1/<tenant id>/servers/<vm id>/action </span><br>            <br>    Next,I checked the vm status:<br>    <br>   <span style="font-style: italic;"> nova list</span><br>    <br>    This command returnd follows:<br>    +--------------------------------------+----------+--------+-----------------+<br>    |                  ID                  |   Name   | Status |     Networks    |<br>    +--------------------------------------+----------+--------+-----------------+<br>    | e5d76e77-01eb-46a8-8086-f66835b39029 | vm_test2 | STOPED | br100=10.16.2.5 |<br>    +--------------------------------------+----------+--------+-----------------+<br>    <br>    Well,I checked if the vm exsited:<br>    <br>    <span style="font-style: italic;">virsh list --all</span><br>    <br>    While,I found nothing.<br>    <br>    Then, I sent start command to my vm instance like follows:<br>    <br>    <span style="font-style: italic;">curl -i -X POST -H "Content-Type: application/json" -H 'X-Auth-Token:<my token>'  \</span><br style="font-style: italic;"><span style="font-style: italic;">            -d '{"os-start":null} ' \</span><br style="font-style: italic;"><span style="font-style: italic;">            http://localhost:8774/v1.1/<tenant id>/servers/<vm id>/action </span><br>            <br>    check the vm:<br>    <br>    <span style="font-style: italic;">nova list</span><br>    <br>    +--------------------------------------+----------+--------+-----------------+<br>    |                  ID                                           |   Name   | Status |     Networks    |<br>    +--------------------------------------+----------+--------+-----------------+<br>    | e5d76e77-01eb-46a8-8086-f66835b39029 | vm_test2 | ACTIVE | br100=10.16.2.3 |<br>    <br>    Here is my question:<br>    1. Is the stop operation of vm instance means to delete the vm and keep nothing except keep <br>    this record in databases ?<br>    2. Is the start operation of vm means to creat a new vm instance according to the <br>    recorde in databases ?<br>    <br>    Waiting your reply . Thanks !<br></div>
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<div>Best Regards</div>
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<div>ZhangJialong</div> </div> </div> </sign> </div>
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