A while back I saw a comment about this in
http://mirantis.blogspot.com/2011/06/openstack-nova-basic-disaster-recovery.htmlwhich suggests that setting these flags may not always be a good idea.
If this is what should be done, why are these flags false by default?
Perhaps a nova expert can comment.
More generally, I haven't seen much documentation in nova about how to
deal with various failure scenarios. There is a lot more information
about this for Swift and there were some sessions at the last design
summit that provided a lot of useful information about the mechanics of
operating a real Swift cluster. I think such a session for nova at the
upcoming summit would be very useful as well.
-David
On 3/12/2012 10:14 AM, Christian Wittwer wrote:
You can let nova-compute start the instances after a host reboot.
--start_guests_on_host_boot
--resume_guests_state_on_host_boot
2012/3/10 Vishvananda Ishaya <[email protected]>:
I think that this branch should make reboot work:
https://review.openstack.org/#change,5177
It looks like we should also make sync_power_states run more frequently. It
currently runs every 6 minutes by default.
On Mar 8, 2012, at 6:27 PM, DeadSun wrote:
As we all know, if host reboot since of some failure or hardware problem,
the vms will actually shutoff. But after host up, info in nova db show vm
state are "active", and using "nova list" return the same.
Now how to start the vms. In Daiblo, I always just using "nova reboot", it
works.But in essex version, it seems cannot use "nova reboot" in an inactive
domain. I see there is "nova host-action" command, but it not always make vm
start.
Another way, I can use "virsh start" a domain, but if the vm attach a
volume, it doesn't work. "nova volume-detach" cannot detach a volume in an
inactive domain.
Is there a normal way to resolve this case?
--
非淡薄无以明志，非宁静无以致远
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