[Linux-HA] 2.1.2 and failover of colocated resources

[Andrew Beekhof]

On 8/31/07, Klemens Kittan <kittan at cs.uni-potsdam.de> wrote:
> Dear Mr. Beekhof,
>
> > > > in that case, add symmetrical=true to your colocation constraint
>
> I tried your suggestion adding the symmetrical=true value:

shortly I'll be releasing a revised implementation (including
documentation!) of colocation which will make it much more intuitive
and remove the need for hacks like symmetrical=true

if anyone wants to try it sooner rather than later, grab the latest
from http://hg.linux-ha.org/dev and ping me for the current version of
the docs.

>
> <rsc_order id="drbd_before_group" from="group" to="ms_drbd" action="start"
> to_action="promote"/>
> <rsc_colocation id="group_on_drbd" from="group" to="ms_drbd" to_role="Master"
> symmetrical="true" score="INFINITY"/>
>
> In result both systems could be started BUT both became slave!
>
> cat /proc/drbd:
> cs:Connected st:Secondary/Secondary ld:Consistent
>
> crm_mon:
> Master/Slave Set: ms_drbd
>     drbd0:0     (heartbeat::ocf:drbd):  Started frigg
>     drbd0:1     (heartbeat::ocf:drbd):  Started odin
> Resource Group: group
>     IPaddr0     (heartbeat::ocf:IPaddr):        Started frigg
>     MailTo      (heartbeat::ocf:MailTo):        Started frigg
>
> Without a master I cannot access to the DRBD ressources.
>
> Secondly, how the group could be started? The group normally starts at the
> master -- and there is none...
>
> Thanks for your help!
> Klemens
>
> --
> Klemens Kittan
> Systemadministrator
>
> Uni-Potsdam, Inst. f. Informatik
> August-Bebel-Str. 89
> 14482 Potsdam
>
> Tel.    :   +49-331-977/3125
> Fax.    :   +49-331-977/3122
> eMail   : kittan at cs.uni-potsdam.de
>
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>
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