[pve-devel] Maintenance mode

[Daniel Hunsaker]

Agree with Andrew on this one.  I could also see default migration paths
being defined somewhere, such that when a node goes into maintenance mode,
VMs are migrated to the preconfigured target node, with a fallback to the
user-selected mode (that is, distribute evenly, or distribute to selected
nodes) if the target node is unavailable or not specified in the VM
config.  Haven't looked at HA in a while to remember if its configuration
already implements something like this, but if so, honoring that would be a
good idea.  I imagine there will be clusters with disparate hardware (mine
tend to be, anyway), and as such some nodes will be capable of running some
VMs that other nodes will not (the key example here being nodes without CPU
virtualization support, but other examples exist).  Being able to define
where VMs will migrate by default could help mitigate that.
On Nov 10, 2014 5:42 PM, "Andrew Thrift" <andrew at networklabs.co.nz> wrote:

> Option 4, You could have a drop down box with a default selection of
> "Distribute Evenly" then a list of all available nodes.
> This would allow the user to just click through and have them distribute
> evenly,  OR they could select a specific node.
>
>
>
> On Tue, Nov 11, 2014 at 12:32 PM, Michael Rasmussen <mir at datanom.net>
> wrote:
>
>> On Tue, 11 Nov 2014 00:27:46 +0100
>> Michael Rasmussen <mir at datanom.net> wrote:
>>
>> > Hi all,
>> >
>> > Just to let you know. I have started implementing the feature for
>> > applying maintenance mode to a node. Right-click on any node will open
>> > a context menu which, at the moment, only contains one item:
>> > Maintenance. See attached screenshot.
>> >
>> I quick poll.
>>
>> 1) Should the user select a specific target node?
>> 2) Should the user select a list of target nodes?
>> 3) Should the implementation migrate running VM's evenly across all
>> other nodes?
>> 4) Should the user be able to select any one of the methods above?
>>
>> --
>> Hilsen/Regards
>> Michael Rasmussen
>>
>> Get my public GnuPG keys:
>> michael <at> rasmussen <dot> cc
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
>> mir <at> datanom <dot> net
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
>> mir <at> miras <dot> org
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917
>> --------------------------------------------------------------
>> /usr/games/fortune -es says:
>> "How should I know if it works?  That's what beta testers are for.  I
>> only coded it."
>> (Attributed to Linus Torvalds, somewhere in a posting)
>>
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