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|
#!/bin/bash
SYSFS=
prerequisite()
{
msg="skip all tests:"
if [ $UID != 0 ]; then
echo $msg must be run as root >&2
exit 0
fi
SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
if [ ! -d "$SYSFS" ]; then
echo $msg sysfs is not mounted >&2
exit 0
fi
if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
echo $msg memory hotplug is not supported >&2
exit 0
fi
}
#
# list all hot-pluggable memory
#
hotpluggable_memory()
{
local state=${1:-.\*}
for memory in $SYSFS/devices/system/memory/memory*; do
if grep -q 1 $memory/removable &&
grep -q $state $memory/state; then
echo ${memory##/*/memory}
fi
done
}
hotplaggable_offline_memory()
{
hotpluggable_memory offline
}
hotpluggable_online_memory()
{
hotpluggable_memory online
}
memory_is_online()
{
grep -q online $SYSFS/devices/system/memory/memory$1/state
}
memory_is_offline()
{
grep -q offline $SYSFS/devices/system/memory/memory$1/state
}
online_memory()
{
echo online > $SYSFS/devices/system/memory/memory$1/state
}
offline_memory()
{
echo offline > $SYSFS/devices/system/memory/memory$1/state
}
online_memory_expect_success()
{
local memory=$1
if ! online_memory $memory; then
echo $FUNCNAME $memory: unexpected fail >&2
elif ! memory_is_online $memory; then
echo $FUNCNAME $memory: unexpected offline >&2
fi
}
online_memory_expect_fail()
{
local memory=$1
if online_memory $memory 2> /dev/null; then
echo $FUNCNAME $memory: unexpected success >&2
elif ! memory_is_offline $memory; then
echo $FUNCNAME $memory: unexpected online >&2
fi
}
offline_memory_expect_success()
{
local memory=$1
if ! offline_memory $memory; then
echo $FUNCNAME $memory: unexpected fail >&2
elif ! memory_is_offline $memory; then
echo $FUNCNAME $memory: unexpected offline >&2
fi
}
offline_memory_expect_fail()
{
local memory=$1
if offline_memory $memory 2> /dev/null; then
echo $FUNCNAME $memory: unexpected success >&2
elif ! memory_is_online $memory; then
echo $FUNCNAME $memory: unexpected offline >&2
fi
}
error=-12
priority=0
ratio=10
while getopts e:hp:r: opt; do
case $opt in
e)
error=$OPTARG
;;
h)
echo "Usage $0 [ -e errno ] [ -p notifier-priority ] [ -r percent-of-memory-to-offline ]"
exit
;;
p)
priority=$OPTARG
;;
r)
ratio=$OPTARG
;;
esac
done
if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
echo "error code must be -4095 <= errno < 0" >&2
exit 1
fi
prerequisite
#
# Online all hot-pluggable memory
#
for memory in `hotplaggable_offline_memory`; do
online_memory_expect_success $memory
done
#
# Offline $ratio percent of hot-pluggable memory
#
for memory in `hotpluggable_online_memory`; do
if [ $((RANDOM % 100)) -lt $ratio ]; then
offline_memory_expect_success $memory
fi
done
#
# Online all hot-pluggable memory again
#
for memory in `hotplaggable_offline_memory`; do
online_memory_expect_success $memory
done
#
# Test with memory notifier error injection
#
DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/memory
prerequisite_extra()
{
msg="skip extra tests:"
/sbin/modprobe -q -r memory-notifier-error-inject
/sbin/modprobe -q memory-notifier-error-inject priority=$priority
if [ ! -d "$DEBUGFS" ]; then
echo $msg debugfs is not mounted >&2
exit 0
fi
if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
echo $msg memory-notifier-error-inject module is not available >&2
exit 0
fi
}
prerequisite_extra
#
# Offline $ratio percent of hot-pluggable memory
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
if [ $((RANDOM % 100)) -lt $ratio ]; then
offline_memory_expect_success $memory
fi
done
#
# Test memory hot-add error handling (offline => online)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
for memory in `hotplaggable_offline_memory`; do
online_memory_expect_fail $memory
done
#
# Online all hot-pluggable memory
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
for memory in `hotplaggable_offline_memory`; do
online_memory_expect_success $memory
done
#
# Test memory hot-remove error handling (online => offline)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
offline_memory_expect_fail $memory
done
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
/sbin/modprobe -q -r memory-notifier-error-inject
|
