From 143063e4576ce4c3a17564337bcdfc76f872cf34 Mon Sep 17 00:00:00 2001
From: Elena Gryaznova <grev@sun.com>
Date: Mon, 1 Nov 2010 19:00:12 +0300
Subject: [PATCH] b=23869 HARD failure mode fixes

i=Brian.Murrel
i=Wei.G.Li

* facet_failover() has to restart only those affected facets which were UP
  before the node failure
* replay-single tests which use shutdown_facet() && reboot_facet() instead of
  facet_failover() have to take care about the affected facets
---
 lustre/tests/replay-single.sh  | 17 +++++++++-----
 lustre/tests/test-framework.sh | 53 +++++++++++++++++++++++++++++++++++-------
 2 files changed, 56 insertions(+), 14 deletions(-)

diff --git a/lustre/tests/replay-single.sh b/lustre/tests/replay-single.sh
index 5ae42c3..b6f8d2d 100755
--- a/lustre/tests/replay-single.sh
+++ b/lustre/tests/replay-single.sh
@@ -2210,18 +2210,23 @@ test_88() { #bug 17485
     next_id2=$(do_facet $SINGLEMDS lctl get_param -n osc.$mdtosc.prealloc_next_id)
     echo "before recovery: last_id = $last_id2, next_id = $next_id2" 
 
+    # if test uses shutdown_facet && reboot_facet instead of facet_failover ()
+    # it has to take care about the affected facets, bug20407
+    local affected_mds1=$(affected_facets mds1)
+    local affected_ost1=$(affected_facets ost1)
+
     shutdown_facet $SINGLEMDS
     shutdown_facet ost1
 
     reboot_facet $SINGLEMDS
-    change_active $SINGLEMDS
-    wait_for_facet $SINGLEMDS
-    mount_facet $SINGLEMDS || error "Restart of mds failed"
+    change_active $affected_mds1
+    wait_for_facet $affected_mds1
+    mount_facets $affected_mds1 || error "Restart of mds failed"
 
     reboot_facet ost1
-    change_active ost1
-    wait_for_facet ost1
-    mount_facet ost1 || error "Restart of ost1 failed"
+    change_active $affected_ost1
+    wait_for_facet $affected_ost1
+    mount_facets $affected_ost1 || error "Restart of ost1 failed"
 
     clients_up
 
diff --git a/lustre/tests/test-framework.sh b/lustre/tests/test-framework.sh
index c069043..e56b8a0 100644
--- a/lustre/tests/test-framework.sh
+++ b/lustre/tests/test-framework.sh
@@ -537,6 +537,15 @@ ostdevlabel() {
 }
 
 # Facet functions
+mount_facets () {
+    local facets=${1:-$(get_facets)}
+    local facet
+
+    for facet in ${facets//,/ }; do
+        mount_facet $facet || error "Restart of $facet failed!"
+    done
+}
+
 mount_facet() {
     local facet=$1
     shift
@@ -914,6 +923,28 @@ facets_on_host () {
     echo $(comma_list $affected)
 }
 
+facet_up () {
+    local facet=$1
+    local host=${2:-$(facet_host $facet)}
+
+    local label=$(convert_facet2label $facet)
+    do_node $host lctl dl | awk '{print $4}' | grep -q $label
+}
+
+facets_up_on_host () {
+    local host=$1
+    local facets=$(facets_on_host $host)
+    local affected_up
+
+    for facet in ${facets//,/ }; do
+        if $(facet_up $facet $host); then
+            affected_up="$affected_up $facet"
+        fi
+    done
+
+    echo $(comma_list $affected_up)
+}
+
 shutdown_facet() {
     local facet=$1
 
@@ -1378,6 +1409,18 @@ client_reconnect() {
     rm $MOUNT/recon
 }
 
+affected_facets () {
+    local facet=$1
+
+    local host=$(facet_active_host $facet)
+    local affected=$facet
+
+    if [ "$FAILURE_MODE" = HARD ]; then
+        affected=$(facets_up_on_host $host)
+    fi
+    echo $affected
+}
+
 facet_failover() {
     local facet=$1
     local sleep_time=$2
@@ -1385,11 +1428,7 @@ facet_failover() {
 
     echo "Failing $facet on node $host"
 
-    local affected=$facet
-
-    if [ "$FAILURE_MODE" = HARD ]; then
-        affected=$(facets_on_host $host)
-    fi
+    local affected=$(affected_facets $facet)
 
     shutdown_facet $facet
 
@@ -1408,9 +1447,7 @@ facet_failover() {
     fi
     # FIXME; has to be changed to mount all facets concurrently
     affected=$(exclude_items_from_list $affected mgs)
-    for facet in ${affected//,/ }; do
-        mount_facet $facet || error "Restart of $facet on node $host failed!"
-    done
+    mount_facets $affected
 }
 
 obd_name() {
-- 
1.8.3.1