[Linux-cluster] problem with rgmanager & depend / depend_mode

[Rick Stevens]

On 11/15/2013 06:09 AM, Digimer issued this missive:
> On 15/11/13 04:31, Fabio M. Di Nitto wrote:
>> On 11/15/2013 6:35 AM, Digimer wrote:
>>> Hi all,
>>>
>>>    I'm trying to use 'depend' in rgmanager on rhel 6.4 to delay the
>>> start-up of VM services until storage starts. The storage is managed as
>>> a separate service (drbd -> clvmd -> gfs2). The 'depend_mode' is 'soft'.
>>>
>>>    I got the start-up part working, but I have a problem now with
>>> stopping a node. If I live-migrate a VM off of the main node and then
>>> shut down it's storage, the VM shuts down immediately after with:
>>
>> rgmanager doesn´t support inter-service dependencies other than for
>> start action.
>>
>> Two options:
>> 1) move to pacemaker ;)
>> 2) you need a custom rgmanager init script that on stop it will
>>     either migrate the services out of the current node and then
>>     stop (if the other nodes are alive), or shutdown the services
>>     in the correct order
>>
>> Fabio
>
> Pacemaker is in the works. Will take a while though.
>
> So 'depend' and 'depend_mode' don't work. Might be worth updating the
> notes in the vm.sh meta-data.

If I read Fabio's response correctly, in rgmanager they work for
_starting_ the service, but do NOT work for _stopping_ the service.
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- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
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