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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 ${SCRIPT_COMMON}" && exit 1 |
c9c0d073 BB |
12 | fi |
13 | ||
14 | PROG=zfs.sh | |
c8f9061f BB |
15 | VERBOSE="no" |
16 | UNLOAD="no" | |
6daf036a | 17 | LOAD="yes" |
ef57371a | 18 | STACK_TRACER="no" |
c8f9061f BB |
19 | |
20 | ZED_PIDFILE=${ZED_PIDFILE:-/var/run/zed.pid} | |
21 | LDMOD=${LDMOD:-/sbin/modprobe} | |
22 | ||
23 | KMOD_ZLIB_DEFLATE=${KMOD_ZLIB_DEFLATE:-zlib_deflate} | |
24 | KMOD_ZLIB_INFLATE=${KMOD_ZLIB_INFLATE:-zlib_inflate} | |
25 | KMOD_SPL=${KMOD_SPL:-spl} | |
c8f9061f BB |
26 | KMOD_ZAVL=${KMOD_ZAVL:-zavl} |
27 | KMOD_ZNVPAIR=${KMOD_ZNVPAIR:-znvpair} | |
28 | KMOD_ZUNICODE=${KMOD_ZUNICODE:-zunicode} | |
29 | KMOD_ZCOMMON=${KMOD_ZCOMMON:-zcommon} | |
d99a0153 | 30 | KMOD_ZLUA=${KMOD_ZLUA:-zlua} |
c8f9061f BB |
31 | KMOD_ICP=${KMOD_ICP:-icp} |
32 | KMOD_ZFS=${KMOD_ZFS:-zfs} | |
a3640486 | 33 | KMOD_FREEBSD=${KMOD_FREEBSD:-openzfs} |
10b3c7f5 | 34 | KMOD_ZZSTD=${KMOD_ZZSTD:-zzstd} |
c8f9061f | 35 | |
c9c0d073 BB |
36 | |
37 | usage() { | |
38 | cat << EOF | |
39 | USAGE: | |
ef57371a | 40 | $0 [hvudS] [module-options] |
c9c0d073 BB |
41 | |
42 | DESCRIPTION: | |
43 | Load/unload the ZFS module stack. | |
44 | ||
45 | OPTIONS: | |
46 | -h Show this message | |
47 | -v Verbose | |
6daf036a | 48 | -r Reload modules |
c9c0d073 | 49 | -u Unload modules |
ef57371a | 50 | -S Enable kernel stack tracer |
c9c0d073 BB |
51 | EOF |
52 | } | |
53 | ||
6daf036a | 54 | while getopts 'hvruS' OPTION; do |
c9c0d073 BB |
55 | case $OPTION in |
56 | h) | |
57 | usage | |
58 | exit 1 | |
59 | ;; | |
60 | v) | |
c8f9061f | 61 | VERBOSE="yes" |
c9c0d073 | 62 | ;; |
6daf036a RM |
63 | r) |
64 | UNLOAD="yes" | |
65 | LOAD="yes" | |
66 | ;; | |
c9c0d073 | 67 | u) |
c8f9061f | 68 | UNLOAD="yes" |
6daf036a | 69 | LOAD="no" |
c9c0d073 | 70 | ;; |
ef57371a TN |
71 | S) |
72 | STACK_TRACER="yes" | |
73 | ;; | |
c9c0d073 BB |
74 | ?) |
75 | usage | |
76 | exit | |
77 | ;; | |
78 | esac | |
79 | done | |
80 | ||
c8f9061f BB |
81 | kill_zed() { |
82 | if [ -f "$ZED_PIDFILE" ]; then | |
83 | PID=$(cat "$ZED_PIDFILE") | |
84 | kill "$PID" | |
85 | fi | |
86 | } | |
87 | ||
a3640486 | 88 | check_modules_linux() { |
ea49beba GDN |
89 | LOADED_MODULES="" |
90 | MISSING_MODULES="" | |
c8f9061f | 91 | |
10b3c7f5 MN |
92 | for KMOD in $KMOD_SPL $KMOD_ZAVL $KMOD_ZNVPAIR $KMOD_ZUNICODE $KMOD_ZCOMMON \ |
93 | $KMOD_ZLUA $KMOD_ZZSTD $KMOD_ICP $KMOD_ZFS; do | |
c8f9061f BB |
94 | NAME=$(basename "$KMOD" .ko) |
95 | ||
3da3488e | 96 | if lsmod | grep -E -q "^${NAME}"; then |
c8f9061f BB |
97 | LOADED_MODULES="$LOADED_MODULES\t$NAME\n" |
98 | fi | |
99 | ||
100 | if ! modinfo "$KMOD" >/dev/null 2>&1; then | |
101 | MISSING_MODULES="$MISSING_MODULES\t${KMOD}\n" | |
102 | fi | |
103 | done | |
104 | ||
105 | if [ -n "$LOADED_MODULES" ]; then | |
106 | printf "Unload the kernel modules by running '%s -u':\n" "$PROG" | |
107 | printf "%b" "$LOADED_MODULES" | |
108 | exit 1 | |
109 | fi | |
110 | ||
111 | if [ -n "$MISSING_MODULES" ]; then | |
112 | printf "The following kernel modules can not be found:\n" | |
113 | printf "%b" "$MISSING_MODULES" | |
114 | exit 1 | |
115 | fi | |
116 | ||
117 | return 0 | |
118 | } | |
119 | ||
a3640486 | 120 | load_module_linux() { |
ea49beba | 121 | KMOD=$1 |
c8f9061f BB |
122 | |
123 | FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}') | |
124 | VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}') | |
125 | ||
126 | if [ "$VERBOSE" = "yes" ]; then | |
127 | echo "Loading: $FILE ($VERSION)" | |
128 | fi | |
129 | ||
2ca77988 | 130 | if ! $LDMOD "$KMOD" >/dev/null 2>&1; then |
c8f9061f BB |
131 | echo "Failed to load $KMOD" |
132 | return 1 | |
133 | fi | |
134 | ||
135 | return 0 | |
136 | } | |
137 | ||
a3640486 RM |
138 | load_modules_freebsd() { |
139 | kldload "$KMOD_FREEBSD" || return 1 | |
140 | ||
141 | if [ "$VERBOSE" = "yes" ]; then | |
142 | echo "Successfully loaded ZFS module stack" | |
143 | fi | |
144 | ||
145 | return 0 | |
146 | } | |
147 | ||
148 | load_modules_linux() { | |
c8f9061f BB |
149 | mkdir -p /etc/zfs |
150 | ||
133a5c65 BB |
151 | if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then |
152 | modprobe "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1 | |
153 | fi | |
154 | ||
155 | if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then | |
156 | modprobe "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1 | |
157 | fi | |
c8f9061f | 158 | |
93ce2b4c | 159 | for KMOD in $KMOD_SPL $KMOD_ZAVL $KMOD_ZNVPAIR \ |
10b3c7f5 MN |
160 | $KMOD_ZUNICODE $KMOD_ZCOMMON $KMOD_ZLUA $KMOD_ZZSTD \ |
161 | $KMOD_ICP $KMOD_ZFS; do | |
a3640486 | 162 | load_module_linux "$KMOD" || return 1 |
c8f9061f BB |
163 | done |
164 | ||
165 | if [ "$VERBOSE" = "yes" ]; then | |
166 | echo "Successfully loaded ZFS module stack" | |
167 | fi | |
168 | ||
169 | return 0 | |
170 | } | |
171 | ||
a3640486 | 172 | unload_module_linux() { |
ea49beba | 173 | KMOD=$1 |
c8f9061f BB |
174 | |
175 | NAME=$(basename "$KMOD" .ko) | |
176 | FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}') | |
177 | VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}') | |
178 | ||
179 | if [ "$VERBOSE" = "yes" ]; then | |
180 | echo "Unloading: $KMOD ($VERSION)" | |
181 | fi | |
182 | ||
183 | rmmod "$NAME" || echo "Failed to unload $NAME" | |
184 | ||
185 | return 0 | |
186 | } | |
187 | ||
a3640486 RM |
188 | unload_modules_freebsd() { |
189 | kldunload "$KMOD_FREEBSD" || echo "Failed to unload $KMOD_FREEBSD" | |
190 | ||
191 | if [ "$VERBOSE" = "yes" ]; then | |
192 | echo "Successfully unloaded ZFS module stack" | |
193 | fi | |
194 | ||
195 | return 0 | |
196 | } | |
197 | ||
198 | unload_modules_linux() { | |
10b3c7f5 MN |
199 | for KMOD in $KMOD_ZFS $KMOD_ICP $KMOD_ZZSTD $KMOD_ZLUA $KMOD_ZCOMMON \ |
200 | $KMOD_ZUNICODE $KMOD_ZNVPAIR $KMOD_ZAVL $KMOD_SPL; do | |
c8f9061f | 201 | NAME=$(basename "$KMOD" .ko) |
3da3488e | 202 | USE_COUNT=$(lsmod | grep -E "^${NAME} " | awk '{print $3}') |
c8f9061f BB |
203 | |
204 | if [ "$USE_COUNT" = "0" ] ; then | |
a3640486 | 205 | unload_module_linux "$KMOD" || return 1 |
9312e0fd | 206 | elif [ "$USE_COUNT" != "" ] ; then |
92286311 AM |
207 | echo "Module ${NAME} is still in use!" |
208 | return 1 | |
c8f9061f BB |
209 | fi |
210 | done | |
211 | ||
133a5c65 BB |
212 | if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then |
213 | modprobe -r "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1 | |
214 | fi | |
215 | ||
216 | if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then | |
217 | modprobe -r "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1 | |
218 | fi | |
219 | ||
c8f9061f BB |
220 | if [ "$VERBOSE" = "yes" ]; then |
221 | echo "Successfully unloaded ZFS module stack" | |
222 | fi | |
223 | ||
224 | return 0 | |
225 | } | |
226 | ||
a3640486 | 227 | stack_clear_linux() { |
ea49beba GDN |
228 | STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size |
229 | STACK_TRACER_ENABLED=/proc/sys/kernel/stack_tracer_enabled | |
c8f9061f | 230 | |
ef57371a | 231 | if [ "$STACK_TRACER" = "yes" ] && [ -e "$STACK_MAX_SIZE" ]; then |
c8f9061f BB |
232 | echo 1 >"$STACK_TRACER_ENABLED" |
233 | echo 0 >"$STACK_MAX_SIZE" | |
234 | fi | |
235 | } | |
236 | ||
a3640486 | 237 | stack_check_linux() { |
ea49beba GDN |
238 | STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size |
239 | STACK_TRACE=/sys/kernel/debug/tracing/stack_trace | |
a7ed98d8 | 240 | STACK_LIMIT=15362 |
c8f9061f BB |
241 | |
242 | if [ -e "$STACK_MAX_SIZE" ]; then | |
243 | STACK_SIZE=$(cat "$STACK_MAX_SIZE") | |
244 | ||
245 | if [ "$STACK_SIZE" -ge "$STACK_LIMIT" ]; then | |
246 | echo | |
247 | echo "Warning: max stack size $STACK_SIZE bytes" | |
248 | cat "$STACK_TRACE" | |
249 | fi | |
250 | fi | |
251 | } | |
252 | ||
c552fbc5 | 253 | if [ "$(id -u)" != 0 ]; then |
c8f9061f BB |
254 | echo "Must run as root" |
255 | exit 1 | |
c9c0d073 BB |
256 | fi |
257 | ||
a3640486 RM |
258 | UNAME=$(uname -s) |
259 | ||
c8f9061f | 260 | if [ "$UNLOAD" = "yes" ]; then |
9e246ac3 | 261 | kill_zed |
b9f6a490 | 262 | umount -t zfs -a |
a3640486 RM |
263 | case $UNAME in |
264 | FreeBSD) | |
265 | unload_modules_freebsd | |
266 | ;; | |
267 | Linux) | |
268 | stack_check_linux | |
269 | unload_modules_linux | |
270 | ;; | |
271 | esac | |
6daf036a RM |
272 | fi |
273 | if [ "$LOAD" = "yes" ]; then | |
a3640486 RM |
274 | case $UNAME in |
275 | FreeBSD) | |
276 | load_modules_freebsd | |
277 | ;; | |
278 | Linux) | |
279 | stack_clear_linux | |
280 | check_modules_linux | |
281 | load_modules_linux "$@" | |
282 | udevadm trigger | |
283 | udevadm settle | |
284 | ;; | |
285 | esac | |
c9c0d073 BB |
286 | fi |
287 | ||
288 | exit 0 |