X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fscripts%2Flustre_rmmod;h=53c8ae2a5e7c6ddaee9624ff8106147375ebf53f;hb=2b5b551b15d96588f8f309b5a08c11cab203efeb;hp=e07f4c98f9a553e01afc77e48d6af55e4ac92be8;hpb=71cdf9a17c8cf243e9b1810cb014bf8ecade6903;p=fs%2Flustre-release.git

diff --git a/lustre/scripts/lustre_rmmod b/lustre/scripts/lustre_rmmod
index e07f4c9..53c8ae2 100755
--- a/lustre/scripts/lustre_rmmod
+++ b/lustre/scripts/lustre_rmmod
@@ -1,42 +1,60 @@
-#!/bin/sh
+#!/bin/bash
 #
-# remove all lustre modules.  Won't succeed if they're in use, or if you
-# manually did a 'lctl network up'.
+# Takes a list of modules and unloads them and all dependent modules.
+# If a module cannot be unloaded (e.g. it's in use), an error is
+# returned.
 ###############################################################################
 
-FSTYPE=${1:-ldiskfs}
+# Unload all modules dependent on $1 (exclude removal of $1)
+unload_dep_modules_exclusive() {
+	local MODULE=$1
+	local DEPS="$(lsmod | awk '($1 == "'$MODULE'") { print $4 }')"
+	for SUBMOD in $(echo $DEPS | tr ',' ' '); do
+		unload_dep_modules_inclusive $SUBMOD || return 1
+	done
+	return 0
+}
+
+# Unload all modules dependent on $1 (include removal of $1)
+unload_dep_modules_inclusive() {
+	local MODULE=$1
+
+	# if $MODULE not loaded, return 0
+	lsmod | egrep -q "^\<$MODULE\>" || return 0
+	unload_dep_modules_exclusive $MODULE || return 1
+	rmmod $MODULE || return 1
+	return 0
+}
 
-TMP=${TMP:-/tmp}
-LUSTRE=${LUSTRE:-$(cd $(dirname $0)/..; echo $PWD)}
-LCTL=${LCTL:-"$LUSTRE/utils/lctl"}
-[ ! -f "$LCTL" ] && export LCTL=$(which lctl 2> /dev/null)
+modules="$@"
 
-RMMOD=rmmod
-if [ `uname -r | cut -c 3` -eq 4 ]; then
-    RMMOD="modprobe -r"
+# To maintain backwards compatibility, ldiskfs and libcfs must be
+# unloaded if no parameters are given, or if only the ldiskfs parameter
+# is given. It's ugly, but is needed to emulate the prior functionality
+if [ -z "$modules" ] || [ "$modules" = "ldiskfs" ]; then
+	modules="ptlrpc lnet_selftest ldiskfs libcfs"
 fi
 
-unload_dep_module() {
-    # libcfs                107852  17 llite_lloop,lustre,obdfilter,ost,...
-    local MODULE=$1
-    local DEPS="$(lsmod | awk '($1 == "'$MODULE'") { print $4 }' | tr ',' ' ')"
-    for SUBMOD in $DEPS; do
-        unload_dep_module $SUBMOD
-    done
-    [ "$MODULE" = "libcfs" ] && $LCTL dk $TMP/debug >/dev/null || true
-    $RMMOD $MODULE 2>/dev/null || true
-    return 0
-}
+if [ -f /sys/kernel/debug/kmemleak ] ; then
+	cat /proc/modules >/tmp/kmemleak-modules-list.txt
+	echo scan > /sys/kernel/debug/kmemleak
+	cat /sys/kernel/debug/kmemleak > /tmp/kmemleak-before-unload.txt
+	test -s /tmp/kmemleak-before-unload.txt && logger -t leak-pre -f /tmp/kmemleak-before-unload.txt
+	rm /tmp/kmemleak-before-unload.txt
+	# Clear everything here so that only new leaks show up
+	# after module unload
+	echo clear > /sys/kernel/debug/kmemleak
+fi
 
-lsmod | grep libcfs > /dev/null && $LCTL dl
-lsmod | grep $FSTYPE && unload_dep_module $FSTYPE
-unload_dep_module libcfs
+for mod in $modules; do
+	unload_dep_modules_inclusive $mod || exit 1
+done
 
-MODULES=$($LCTL modules | awk '{ print $2 }')
-if [ -n "$MODULES" ]; then
-    echo "Modules still loaded: "
-    echo $MODULES
-    exit 1
+if [ -f /sys/kernel/debug/kmemleak ] ; then
+	echo scan > /sys/kernel/debug/kmemleak
+	cat /sys/kernel/debug/kmemleak > /tmp/kmemleak-after-unload.txt
+	test -s /tmp/kmemleak-after-unload.txt && logger -t leak-mods -f /tmp/kmemleak-modules-list.txt && logger -t leak-post -f /tmp/kmemleak-after-unload.txt
+	rm -f /tmp/kmemleak-after-unload.txt /tmp/kmemleak-modules-list.txt
 fi
-exit 0
 
+exit 0