LU-9439 scripts: Provide a sample lnet.conf file

[fs/lustre-release.git] / lustre / scripts / lustre_rmmod

diff --git a/lustre/scripts/lustre_rmmod b/lustre/scripts/lustre_rmmod
index b1020f4..a2dfd0a 100755 (executable)
--- a/lustre/scripts/lustre_rmmod
+++ b/lustre/scripts/lustre_rmmod
@@ -1,41 +1,42 @@
-#!/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=${1:-ldiskfs}
-
-TMP=${TMP:-/tmp}
-LUSTRE=${LUSTRE:-$(cd $(dirname $0)/..; echo $PWD)}
-LCTL=${LCTL:-"$LUSTRE/utils/lctl"}
-[ ! -f "$LCTL" ] && export LCTL=$(which lctl 2> /dev/null)
+# 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
+}

 
 

-RMMOD=rmmod
-if [ `uname -r | cut -c 3` -eq 4 ]; then
-    RMMOD="modprobe -r"
-fi
+# Unload all modules dependent on $1 (include removal of $1)
+unload_dep_modules_inclusive() {
+       local MODULE=$1

 
 

-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 || true
-    $RMMOD $MODULE || true
+       # 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

 }
 
 }
 

-lsmod | grep libcfs > /dev/null && $LCTL dl
-lsmod | grep $FSTYPE && unload_dep_module $FSTYPE
-unload_dep_module libcfs
+modules="$@"

 
 

-MODULES=$($LCTL modules | awk '{ print $2 }')
-if [ -n "$MODULES" ]; then
-    echo "Modules still loaded: "
-    echo $MODULES
-    exit 1
+# To maintain backwards compatibility, ldiskfs and libcfs must be
+# unloaded if no parameters are given, or if only the ldiskfs parameter
+# is given. It's ugly, but is needed to emulate the prior functionality
+if [ -z "$modules" ] || [ "$modules" = "ldiskfs" ]; then
+       modules="ptlrpc lnet_selftest ldiskfs libcfs"

 fi
 fi

-exit 0

 
 

+for mod in $modules; do
+       unload_dep_modules_inclusive $mod || exit 1
+done
+
+exit 0