Re: [Libvir] [RFC] Life-cycle Management of the domain
Hi Daniel,
Thank you for your comments and sorry about my unclear explanation.
Let me say what are the original data. The original data are
"/var/lib/xend/domains/<domain UUID>/config.sxp" that made by Xen when
defining
a domain.
I expect the following Life-cycle:
1. "Define a domain"
-> a config.sxp file is made at
"/var/lib/xend/domains/<domainUUID>".
2. "Start a domain"
-> libvirt copies a file from "/var/lib/xend/domains/.../config.sxp"
to "/var/lib/libvirt/<domainUUID>/virt.sxp"(tentative place).
3. "Change a allocation"
4. "Shutdown a domain"
5. "Start a domain"
-> using the data which is "/var/lib/libvirt/.../virt.sxp".
6. Cycle of "Shutdown a domain, Start a domain, and Change a allocation"
7. "Undefine a domain"
-> the libvirt deletes a "virt.sxp" file.
We can't know what are the original data which were used to
create the domain
was that /etc/xen/... ? was that an XML file coming from a client application ?
was that another source by calling the Xen API ?
So, we have the original data if the domain was defined by whether using
"/etc/xen..." or XML file.
That I not too fond of adding ome more place where data for domain
definition can be stored.
I think that we need to store the domain definition to change a allocation
dynamically or statically.
I know the SXP file is Xen-specific, so I have thinking about another way, as
an example, the format is XML. In that case, we can use virDomainGetXMLDesc to
get the original data instead of copying a config.sxp file.
but what we must make sure is that the API allow to make the
required
change dynamically.
I'm not sure what you mean by "the API". Do you mean make sure that Xen API
allow to change dynamically, or libvirt API ?
Thanks,
Saori.