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-   -   multipath-tools: Manual failback fix when priority changes (http://www.linux-archive.org/device-mapper-development/531682-multipath-tools-manual-failback-fix-when-priority-changes.html)

"Moger, Babu" 05-27-2011 02:30 PM

multipath-tools: Manual failback fix when priority changes
 
Current code switches the path-group when there is a change in priority. However,
this is not the right thing to do when failback is set to manual. This patch fixes
this problem. Call update_path_groups only if failback is immediate.

Signed-off-by: Babu Moger <babu.moger@netapp.com>

---
--- multipath-tools/multipathd/main.c.orig 2011-05-26 08:06:08.000000000 -0500
+++ multipath-tools/multipathd/main.c 2011-05-26 08:21:39.000000000 -0500
@@ -1189,7 +1189,8 @@ check_path (struct vectors * vecs, struc
condlog(4, "path prio refresh");

if (update_prio(pp, new_path_up) &&
- pp->mpp->pgpolicyfn == (pgpolicyfn *)group_by_prio)
+ (pp->mpp->pgpolicyfn == (pgpolicyfn *)group_by_prio) &&
+ pp->mpp->pgfailback == -FAILBACK_IMMEDIATE)
update_path_groups(pp->mpp, vecs, !new_path_up);
else if (need_switch_pathgroup(pp->mpp, 0)) {
if (pp->mpp->pgfailback > 0 &&



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