[Linux-HA] How to prevent unexpected unmount (stop) of ordered clone Filesystem resource on alive node

[Andrew Beekhof]

On Dec 30, 2007, at 4:11 AM, Takekazu Okamoto wrote:

> Andrew-san,
>
>>>> Andrew Beekhof <beekhof at gmail.com> 2007/12/29 23:54 >>>
>> can you use hb_report to generate a report covering the testing
> period?
>> it will contain everything i need to figure out what is going wrong
>
> I cannot get hb_report result since on holiday off now.
> Therefore I have looked into the code
>
>> Dec 28 18:18:23 node2 pengine: [4593]: info: native_stop_constraints:
> Re-creating actions for imagestorecloneset
>
> crm/pengine/native.c:
> static void
> native_stop_constraints(
>    resource_t *rsc,  action_t *stonith_op, gboolean is_stonith,
>    pe_working_set_t *data_set)
> {
> [snip]
>        /* find the top-most resource */
>        parent = rsc->parent;
>        while(parent != NULL && parent->parent != NULL) {
>        parent = parent->parent;
>        }
>
>        if(parent) {
>        crm_info("Re-creating actions for %s", parent->id);
>        parent->cmds->create_actions(parent, data_set);
>
>> Dec 28 18:18:23 node2 pengine: [4593]: notice: NoRoleChange: Leave
> resource imagestoreclone:1   (node2)
>
> void
> NoRoleChange(resource_t *rsc, node_t *current, node_t *next,
>         pe_working_set_t *data_set)
> {
> [snip]
>    } else {
>        stop = stop_action(rsc, current, TRUE);
>        start = start_action(rsc, next, TRUE);
>        stop->optional = start->optional;
>        if(rsc->next_role > RSC_ROLE_STARTED) {
>            DemoteRsc(rsc, current, start->optional, data_set);
>        }
>        StopRsc(rsc, current, start->optional, data_set);
>        StartRsc(rsc, current, start->optional, data_set);
>        if(rsc->next_role == RSC_ROLE_MASTER) {
>            PromoteRsc(rsc, next, start->optional, data_set);
>        }
>
>        if(start->runnable == FALSE) {
>            rsc->next_role = RSC_ROLE_STOPPED;
>
>        } else if(start->optional) {
>            crm_notice("Leave resource %s\t(%s)",
>                   rsc->id, next->details->uname);
>
> I'm not sure but it seems the above code invokes "stop" action for
> remained cloned resource.

Yes, but at this point its still optional and wont necessarily be  
executed.

If you use hb_report I'll have a testcase which I can use to reproduce  
the problem and be sure that the problem is 100% fixed.

>
>
>> Dec 28 18:18:23 node2 tengine: [4592]: info: send_rsc_command:
> Initiating action 75: imagestoreclone:1_pre_notify_stop_0 on node2
>
> Is this correct understanding?
>
> Thank you,
> Takekazu Okamoto
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