File bsc#1155290-0002-Bug-tools-Clear-all-prefer-constraints-when-performi-1.1.patch of Package pacemaker.19778
From d4954fccb6fa02d2cc37d0ee6e5dbe7a24fb0048 Mon Sep 17 00:00:00 2001
From: Chris Lumens <clumens@redhat.com>
Date: Fri, 11 Jan 2019 12:18:45 -0500
Subject: [PATCH 2/4] Bug: tools: Clear all prefer constraints when performing
a move
A move is implemented in terms of perfer constraints. If those
constraints contain something like a lifetime expression, and older
prefer constraints are not cleared out, the result is a mess. The XML
that is attempted to insert into the CIB will contain both the older
constraint and then the new lifetime expression as sub-nodes of that
constraint. This is invalid, so the CIB will throw it out.
The fix is to make sure there are no prefer constraints for any nodes
when a move is done.
Most ban constraints are left alone, because they may still be valid -
you may want to move a resource to one node while preserving the ban on
another node. Taking care of this is the bulk of the complexity in this
patch.
One further note - any ban constraints on the destination still need to
be removed. Having both a ban and a prefer constraint on the same node
may technically be valid XML, but doesn't make any sense.
See rhbz#1648620
---
tools/crm_resource.c | 4 ++--
tools/crm_resource.h | 3 ++-
tools/crm_resource_ban.c | 17 +++++++++++------
tools/crm_resource_runtime.c | 11 +++++++----
4 files changed, 22 insertions(+), 13 deletions(-)
Index: pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource.c
===================================================================
--- pacemaker-1.1.19+20181105.ccd6b5b10.orig/tools/crm_resource.c
+++ pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource.c
@@ -989,10 +989,10 @@ main(int argc, char **argv)
rc = -ENXIO;
goto bail;
}
- rc = cli_resource_clear(rsc_id, dest->details->uname, NULL, cib_conn);
+ rc = cli_resource_clear(rsc_id, dest->details->uname, NULL, cib_conn, TRUE);
} else {
- rc = cli_resource_clear(rsc_id, NULL, data_set.nodes, cib_conn);
+ rc = cli_resource_clear(rsc_id, NULL, data_set.nodes, cib_conn, TRUE);
}
} else if (rsc_cmd == 'M' && host_uname) {
Index: pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource.h
===================================================================
--- pacemaker-1.1.19+20181105.ccd6b5b10.orig/tools/crm_resource.h
+++ pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource.h
@@ -50,7 +50,8 @@ extern const char *attr_set_type;
/* ban */
int cli_resource_prefer(const char *rsc_id, const char *host, cib_t * cib_conn);
int cli_resource_ban(const char *rsc_id, const char *host, GListPtr allnodes, cib_t * cib_conn);
-int cli_resource_clear(const char *rsc_id, const char *host, GListPtr allnodes, cib_t * cib_conn);
+int cli_resource_clear(const char *rsc_id, const char *host, GListPtr allnodes, cib_t * cib_conn,
+ bool clear_ban_constraints);
/* print */
void cli_resource_print_cts(resource_t * rsc);
Index: pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource_ban.c
===================================================================
--- pacemaker-1.1.19+20181105.ccd6b5b10.orig/tools/crm_resource_ban.c
+++ pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource_ban.c
@@ -225,15 +225,19 @@ resource_clear_node_in_expr(const char *
}
static int
-resource_clear_node_in_location(const char *rsc_id, const char *host, cib_t * cib_conn)
+resource_clear_node_in_location(const char *rsc_id, const char *host, cib_t * cib_conn,
+ bool clear_ban_constraints)
{
int rc = pcmk_ok;
xmlNode *fragment = NULL;
xmlNode *location = NULL;
fragment = create_xml_node(NULL, XML_CIB_TAG_CONSTRAINTS);
- location = create_xml_node(fragment, XML_CONS_TAG_RSC_LOCATION);
- crm_xml_set_id(location, "cli-ban-%s-on-%s", rsc_id, host);
+
+ if (clear_ban_constraints == TRUE) {
+ location = create_xml_node(fragment, XML_CONS_TAG_RSC_LOCATION);
+ crm_xml_set_id(location, "cli-ban-%s-on-%s", rsc_id, host);
+ }
location = create_xml_node(fragment, XML_CONS_TAG_RSC_LOCATION);
crm_xml_set_id(location, "cli-prefer-%s", rsc_id);
@@ -252,7 +256,8 @@ resource_clear_node_in_location(const ch
}
int
-cli_resource_clear(const char *rsc_id, const char *host, GListPtr allnodes, cib_t * cib_conn)
+cli_resource_clear(const char *rsc_id, const char *host, GListPtr allnodes, cib_t * cib_conn,
+ bool clear_ban_constraints)
{
int rc = pcmk_ok;
@@ -268,7 +273,7 @@ cli_resource_clear(const char *rsc_id, c
* to try the second clear method.
*/
if (rc == pcmk_ok) {
- rc = resource_clear_node_in_location(rsc_id, host, cib_conn);
+ rc = resource_clear_node_in_location(rsc_id, host, cib_conn, clear_ban_constraints);
}
} else {
@@ -280,7 +285,7 @@ cli_resource_clear(const char *rsc_id, c
for(; n; n = n->next) {
node_t *target = n->data;
- rc = cli_resource_clear(rsc_id, target->details->uname, NULL, cib_conn);
+ rc = cli_resource_clear(rsc_id, target->details->uname, NULL, cib_conn, clear_ban_constraints);
if (rc != pcmk_ok) {
break;
}
Index: pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource_runtime.c
===================================================================
--- pacemaker-1.1.19+20181105.ccd6b5b10.orig/tools/crm_resource_runtime.c
+++ pacemaker-1.1.19+20181105.ccd6b5b10/tools/crm_resource_runtime.c
@@ -1408,7 +1408,7 @@ cli_resource_restart(resource_t * rsc, c
}
if (stop_via_ban) {
- rc = cli_resource_clear(rsc_id, host, NULL, cib);
+ rc = cli_resource_clear(rsc_id, host, NULL, cib, TRUE);
} else if (orig_target_role) {
rc = cli_resource_update_attribute(rsc, rsc_id, NULL, NULL,
@@ -1491,7 +1491,7 @@ cli_resource_restart(resource_t * rsc, c
failure:
if (stop_via_ban) {
- cli_resource_clear(rsc_id, host, NULL, cib);
+ cli_resource_clear(rsc_id, host, NULL, cib, TRUE);
} else if (orig_target_role) {
cli_resource_update_attribute(rsc, rsc_id, NULL, NULL,
XML_RSC_ATTR_TARGET_ROLE,
@@ -1904,8 +1904,11 @@ cli_resource_move(resource_t *rsc, const
}
}
- /* Clear any previous constraints for 'dest' */
- cli_resource_clear(rsc_id, dest->details->uname, data_set->nodes, cib);
+ /* Clear any previous prefer constraints across all nodes. */
+ cli_resource_clear(rsc_id, NULL, data_set->nodes, cib, FALSE);
+
+ /* Clear any previous ban constraints on 'dest'. */
+ cli_resource_clear(rsc_id, dest->details->uname, data_set->nodes, cib, TRUE);
/* Record an explicit preference for 'dest' */
rc = cli_resource_prefer(rsc_id, dest->details->uname, cib);
