Hi Yun, This proposal looks very good to me. I am glad you included in it the requirement that hard deletes can take place in any vm/task/power state.
I however feel that a similar requirement exists for revert resize. It should be possible to issue a RevertResize command for any task_state (assuming that a resize is happening or has recently happened and is not yet confirmed). The code to support this capability doesn't exist yet, but I want to ask you: is it compatible with your proposal to allow RevertResize in any task state? "Yun Mao" <[email protected]> said: > Hi, > > There are vm_states, task_states, and power_states for each VM. The > use of them is complicated. Some states are confusing, and sometimes > ambiguous. There also lacks a guideline to extend/add new state. This > proposal aims to simplify things, explain and define precisely what > they mean, and why we need them. A new user-friendly behavior of > deleting a VM is also discussed. > > A TL;DR summary: > * power_state is the hypervisor state, loaded “bottom-up” from compute > worker; > * vm_state reflects the stable state based on API calls, matching user > expectation, revised “top-down” within API implementation. > * task_state reflects the transition state introduced by in-progress API > calls. > * “hard” delete of a VM should always succeed no matter what. > * power_state and vm_state may conflict with each other, which needs > to be resolved case-by-case. > > It's not a definite guide yet and is up for discussion. I'd like to > thank vishy and comstud for the early input. comstud: the task_state > is different from when you looked at it. It's a lot closer to what's > in the current code. > > The full text is here and is editable by anyone like etherpad. > > https://docs.google.com/document/d/1nlKmYld3xxpTv6Xx0Iky6L46smbEqg7-SWPu_o6VJws/edit?pli=1 > > Thanks, > > Yun > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
