Re: [Xen-users] xendomains migrate exclude

["Torsten Lehmann" <tlehmann@xxxxxxxxxxxxx>]

hallo,

>> Can you please verify the following points? (true/false)
>> 1. VMs migrate on "xendomains stop" if set XENDOMAINS_MIGRATE
>
> I think so.
>
>> 2. "xendomains" do not using config on_xend_stop/on_xend_start
>> 3. "on_xend_stop" cannot trigger migration (values:
>> ignore|shutdown|suspend)
>
> I don't know about either of those.

How to migration without xendomains?


>> 4. if using managed_vm, xendomains can be safely turned off [3]
>
> I'm not sure, but probably.

I'm also not sure. because xendomains can migration.

>
> Ian.
>
>

So I've played through a few variations.
new: variant #3

5.  variants (part)

   1. xendomains: migrate if on_xend_stop==migrate
      - not backwards compatible (migrate if on_xend_stop==ignore)
   2. xendomains: migrate if on_xend_stop!=shutdown
      - possible
   3. xendomains: migrate if on_xend_stop!=shutdown && on_xend_stop!=suspend
      save if "$on_xend_stop" != "shutdown"
      - better


6. Table variant action
variant on_xend_stop    action
org     ignore  migrate
org     shutdown        migrate
org     suspend migrate
1       ignore  undef
1       shutdown        migrate
1       suspend migrate
1       migrate migrate
2       ignore  migrate
2       shutdown        shutdown
2       suspend migrate
3       ignore  migrate
3       shutdown        shutdown
3       suspend save

I think the best option is variant 3.
Implementation see [1].

Should I post it to git?
other suggestions?

Torsten

[1]
http://www2.fh-lausitz.de/launic/comp/xen/140508.xen.migrate_exclude/140516.xen.diag.migrate_exclude.html






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