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Commit | Line | Data |
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c8f9061f BB |
1 | #!/bin/sh |
2 | # | |
3 | # A simple script to load/unload the ZFS module stack. | |
c9c0d073 | 4 | # |
c9c0d073 | 5 | |
c8f9061f | 6 | BASE_DIR=$(dirname "$0") |
c9c0d073 | 7 | SCRIPT_COMMON=common.sh |
c8f9061f BB |
8 | if [ -f "${BASE_DIR}/${SCRIPT_COMMON}" ]; then |
9 | . "${BASE_DIR}/${SCRIPT_COMMON}" | |
c9c0d073 | 10 | else |
c8f9061f | 11 | echo "Missing helper script ${SCRIPT_COMMON}" && exit 1 |
c9c0d073 BB |
12 | fi |
13 | ||
14 | PROG=zfs.sh | |
c8f9061f BB |
15 | VERBOSE="no" |
16 | UNLOAD="no" | |
ef57371a | 17 | STACK_TRACER="no" |
c8f9061f BB |
18 | |
19 | ZED_PIDFILE=${ZED_PIDFILE:-/var/run/zed.pid} | |
20 | LDMOD=${LDMOD:-/sbin/modprobe} | |
21 | ||
22 | KMOD_ZLIB_DEFLATE=${KMOD_ZLIB_DEFLATE:-zlib_deflate} | |
23 | KMOD_ZLIB_INFLATE=${KMOD_ZLIB_INFLATE:-zlib_inflate} | |
24 | KMOD_SPL=${KMOD_SPL:-spl} | |
c8f9061f BB |
25 | KMOD_ZAVL=${KMOD_ZAVL:-zavl} |
26 | KMOD_ZNVPAIR=${KMOD_ZNVPAIR:-znvpair} | |
27 | KMOD_ZUNICODE=${KMOD_ZUNICODE:-zunicode} | |
28 | KMOD_ZCOMMON=${KMOD_ZCOMMON:-zcommon} | |
d99a0153 | 29 | KMOD_ZLUA=${KMOD_ZLUA:-zlua} |
c8f9061f BB |
30 | KMOD_ICP=${KMOD_ICP:-icp} |
31 | KMOD_ZFS=${KMOD_ZFS:-zfs} | |
32 | ||
c9c0d073 BB |
33 | |
34 | usage() { | |
35 | cat << EOF | |
36 | USAGE: | |
ef57371a | 37 | $0 [hvudS] [module-options] |
c9c0d073 BB |
38 | |
39 | DESCRIPTION: | |
40 | Load/unload the ZFS module stack. | |
41 | ||
42 | OPTIONS: | |
43 | -h Show this message | |
44 | -v Verbose | |
45 | -u Unload modules | |
ef57371a | 46 | -S Enable kernel stack tracer |
c9c0d073 BB |
47 | EOF |
48 | } | |
49 | ||
ef57371a | 50 | while getopts 'hvuS' OPTION; do |
c9c0d073 BB |
51 | case $OPTION in |
52 | h) | |
53 | usage | |
54 | exit 1 | |
55 | ;; | |
56 | v) | |
c8f9061f | 57 | VERBOSE="yes" |
c9c0d073 BB |
58 | ;; |
59 | u) | |
c8f9061f | 60 | UNLOAD="yes" |
c9c0d073 | 61 | ;; |
ef57371a TN |
62 | S) |
63 | STACK_TRACER="yes" | |
64 | ;; | |
c9c0d073 BB |
65 | ?) |
66 | usage | |
67 | exit | |
68 | ;; | |
69 | esac | |
70 | done | |
71 | ||
c8f9061f BB |
72 | kill_zed() { |
73 | if [ -f "$ZED_PIDFILE" ]; then | |
74 | PID=$(cat "$ZED_PIDFILE") | |
75 | kill "$PID" | |
76 | fi | |
77 | } | |
78 | ||
79 | check_modules() { | |
ea49beba GDN |
80 | LOADED_MODULES="" |
81 | MISSING_MODULES="" | |
c8f9061f | 82 | |
93ce2b4c | 83 | for KMOD in $KMOD_SPL $KMOD_ZAVL $KMOD_ZNVPAIR \ |
d99a0153 | 84 | $KMOD_ZUNICODE $KMOD_ZCOMMON $KMOD_ZLUA $KMOD_ICP $KMOD_ZFS; do |
c8f9061f BB |
85 | NAME=$(basename "$KMOD" .ko) |
86 | ||
3da3488e | 87 | if lsmod | grep -E -q "^${NAME}"; then |
c8f9061f BB |
88 | LOADED_MODULES="$LOADED_MODULES\t$NAME\n" |
89 | fi | |
90 | ||
91 | if ! modinfo "$KMOD" >/dev/null 2>&1; then | |
92 | MISSING_MODULES="$MISSING_MODULES\t${KMOD}\n" | |
93 | fi | |
94 | done | |
95 | ||
96 | if [ -n "$LOADED_MODULES" ]; then | |
97 | printf "Unload the kernel modules by running '%s -u':\n" "$PROG" | |
98 | printf "%b" "$LOADED_MODULES" | |
99 | exit 1 | |
100 | fi | |
101 | ||
102 | if [ -n "$MISSING_MODULES" ]; then | |
103 | printf "The following kernel modules can not be found:\n" | |
104 | printf "%b" "$MISSING_MODULES" | |
105 | exit 1 | |
106 | fi | |
107 | ||
108 | return 0 | |
109 | } | |
110 | ||
111 | load_module() { | |
ea49beba | 112 | KMOD=$1 |
c8f9061f BB |
113 | |
114 | FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}') | |
115 | VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}') | |
116 | ||
117 | if [ "$VERBOSE" = "yes" ]; then | |
118 | echo "Loading: $FILE ($VERSION)" | |
119 | fi | |
120 | ||
121 | $LDMOD "$KMOD" >/dev/null 2>&1 | |
3da3488e | 122 | # shellcheck disable=SC2181 |
c8f9061f BB |
123 | if [ $? -ne 0 ]; then |
124 | echo "Failed to load $KMOD" | |
125 | return 1 | |
126 | fi | |
127 | ||
128 | return 0 | |
129 | } | |
130 | ||
131 | load_modules() { | |
132 | mkdir -p /etc/zfs | |
133 | ||
133a5c65 BB |
134 | if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then |
135 | modprobe "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1 | |
136 | fi | |
137 | ||
138 | if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then | |
139 | modprobe "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1 | |
140 | fi | |
c8f9061f | 141 | |
93ce2b4c | 142 | for KMOD in $KMOD_SPL $KMOD_ZAVL $KMOD_ZNVPAIR \ |
d99a0153 | 143 | $KMOD_ZUNICODE $KMOD_ZCOMMON $KMOD_ZLUA $KMOD_ICP $KMOD_ZFS; do |
c8f9061f BB |
144 | load_module "$KMOD" || return 1 |
145 | done | |
146 | ||
147 | if [ "$VERBOSE" = "yes" ]; then | |
148 | echo "Successfully loaded ZFS module stack" | |
149 | fi | |
150 | ||
151 | return 0 | |
152 | } | |
153 | ||
154 | unload_module() { | |
ea49beba | 155 | KMOD=$1 |
c8f9061f BB |
156 | |
157 | NAME=$(basename "$KMOD" .ko) | |
158 | FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}') | |
159 | VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}') | |
160 | ||
161 | if [ "$VERBOSE" = "yes" ]; then | |
162 | echo "Unloading: $KMOD ($VERSION)" | |
163 | fi | |
164 | ||
165 | rmmod "$NAME" || echo "Failed to unload $NAME" | |
166 | ||
167 | return 0 | |
168 | } | |
169 | ||
170 | unload_modules() { | |
d99a0153 | 171 | for KMOD in $KMOD_ZFS $KMOD_ICP $KMOD_ZLUA $KMOD_ZCOMMON $KMOD_ZUNICODE \ |
93ce2b4c | 172 | $KMOD_ZNVPAIR $KMOD_ZAVL $KMOD_SPL; do |
c8f9061f | 173 | NAME=$(basename "$KMOD" .ko) |
3da3488e | 174 | USE_COUNT=$(lsmod | grep -E "^${NAME} " | awk '{print $3}') |
c8f9061f BB |
175 | |
176 | if [ "$USE_COUNT" = "0" ] ; then | |
177 | unload_module "$KMOD" || return 1 | |
178 | fi | |
179 | done | |
180 | ||
133a5c65 BB |
181 | if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then |
182 | modprobe -r "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1 | |
183 | fi | |
184 | ||
185 | if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then | |
186 | modprobe -r "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1 | |
187 | fi | |
188 | ||
c8f9061f BB |
189 | if [ "$VERBOSE" = "yes" ]; then |
190 | echo "Successfully unloaded ZFS module stack" | |
191 | fi | |
192 | ||
193 | return 0 | |
194 | } | |
195 | ||
196 | stack_clear() { | |
ea49beba GDN |
197 | STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size |
198 | STACK_TRACER_ENABLED=/proc/sys/kernel/stack_tracer_enabled | |
c8f9061f | 199 | |
ef57371a | 200 | if [ "$STACK_TRACER" = "yes" ] && [ -e "$STACK_MAX_SIZE" ]; then |
c8f9061f BB |
201 | echo 1 >"$STACK_TRACER_ENABLED" |
202 | echo 0 >"$STACK_MAX_SIZE" | |
203 | fi | |
204 | } | |
205 | ||
206 | stack_check() { | |
ea49beba GDN |
207 | STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size |
208 | STACK_TRACE=/sys/kernel/debug/tracing/stack_trace | |
a7ed98d8 | 209 | STACK_LIMIT=15362 |
c8f9061f BB |
210 | |
211 | if [ -e "$STACK_MAX_SIZE" ]; then | |
212 | STACK_SIZE=$(cat "$STACK_MAX_SIZE") | |
213 | ||
214 | if [ "$STACK_SIZE" -ge "$STACK_LIMIT" ]; then | |
215 | echo | |
216 | echo "Warning: max stack size $STACK_SIZE bytes" | |
217 | cat "$STACK_TRACE" | |
218 | fi | |
219 | fi | |
220 | } | |
221 | ||
c552fbc5 | 222 | if [ "$(id -u)" != 0 ]; then |
c8f9061f BB |
223 | echo "Must run as root" |
224 | exit 1 | |
c9c0d073 BB |
225 | fi |
226 | ||
c8f9061f | 227 | if [ "$UNLOAD" = "yes" ]; then |
9e246ac3 | 228 | kill_zed |
b9f6a490 | 229 | umount -t zfs -a |
10715a01 | 230 | stack_check |
c9c0d073 BB |
231 | unload_modules |
232 | else | |
10715a01 | 233 | stack_clear |
c8f9061f BB |
234 | check_modules |
235 | load_modules "$@" | |
236 | udevadm trigger | |
237 | udevadm settle | |
c9c0d073 BB |
238 | fi |
239 | ||
240 | exit 0 |