Attachment 158940 Details for Bug 247772 – basic idea of service following another

[patch] basic idea of service following another

cluster-1.03.00-follow-avoid.patch (text/plain), 3.62 KB, created by Mark Hlawatschek on 2007-07-11 12:05:05 UTC

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Creator: Mark Hlawatschek

Created: 2007-07-11 12:05:05 UTC

Size: 3.62 KB

patch

obsolete

>diff -Naur cluster-1.03.00.orig/rgmanager/src/daemons/groups.c cluster-1.03.00/rgmanager/src/daemons/groups.c
>--- cluster-1.03.00.orig/rgmanager/src/daemons/groups.c	2006-06-16 22:07:46.000000000 +0200
>+++ cluster-1.03.00/rgmanager/src/daemons/groups.c	2006-10-18 13:21:09.000000000 +0200
>@@ -150,6 +150,7 @@
> 	char *val;
> 	resource_t *res;
> 	int exclusive;
>+	rg_state_t rg_state;
> 
> 	if (lock)
> 		pthread_rwlock_rdlock(&resource_lock);
>@@ -201,6 +202,45 @@
> 			continue;
> 		}
> 
>+                // skip node if service defined by "avoid" is running
>+                // FIXME: move all checks out of loop
>+
>+                val = res_attr_value(res, "avoid");
>+
>+                if (val) {
>+                        // check if this node runs the service to avoid
>+                        clulog(LOG_DEBUG, "service %s has to avoid %s\n", rg_name, val);
>+                        if (get_rg_state(val, &rg_state) != 0) {
>+                                clulog(LOG_WARNING, "can't get state of service %s\n", val);
>+                        } else {
>+                                if ((rg_state.rs_state == RG_STATE_STARTED) && (rg_state.rs_owner == nodeid)) {
>+                                        clulog(LOG_DEBUG, "service %s started on nodeid %i -> avoid\n", val, nodeid);
>+                                        continue;
>+                                }
>+                        }
>+                }
>+
>+                // add 3 to score if a follow tag is enabled and master is running
>+                //       on that node
>+                // note: 3 will break failoverdomain borders
>+                // FIXME: move all checks out of loop
>+
>+                val = res_attr_value(res, "follow");
>+
>+                if (val) {
>+                        // check if this node runs the master service
>+                        clulog(LOG_DEBUG, "service %s needs to follow %s\n", rg_name, val);
>+                        if (get_rg_state(val, &rg_state) != 0) {
>+                                clulog(LOG_WARNING, "can't get state of service %s\n", val);
>+                        } else {
>+                                if ((rg_state.rs_state == RG_STATE_STARTED) && (rg_state.rs_owner == nodeid)) {
>+                                        clulog(LOG_DEBUG, "service %s started on nodeid %i -> follow\n", val, nodeid);
>+                                        score += 3;
>+                                }
>+                        }
>+                }
>+
>+
> 		if (score < highscore)
> 			continue;
> 
>diff -Naur cluster-1.03.00.orig/rgmanager/src/resources/service.sh cluster-1.03.00/rgmanager/src/resources/service.sh
>--- cluster-1.03.00.orig/rgmanager/src/resources/service.sh	2006-06-16 22:07:46.000000000 +0200
>+++ cluster-1.03.00/rgmanager/src/resources/service.sh	2006-10-18 13:17:04.000000000 +0200
>@@ -94,6 +94,27 @@
>             <content type="boolean"/>
>         </parameter>
> 
>+        <parameter name="follow">
>+            <longdesc lang="en">
>+                Define a service to follow after service transition
>+            </longdesc>
>+            <shortdesc lang="en">
>+                Define a service to follow
>+            </shortdesc>
>+            <content type="string"/>
>+        </parameter>
>+
>+        <parameter name="avoid">
>+            <longdesc lang="en">
>+                Avoid running together with this service after service transition
>+            </longdesc>
>+            <shortdesc lang="en">
>+                Avoid running together with this service
>+            </shortdesc>
>+            <content type="string"/>
>+        </parameter>
>+
>+
> 	<parameter name="nfslock">
> 	    <longdesc lang="en">
> 	    	Enable NFS lock workarounds.  When used with a compatible

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