blob: 185eb5279a3e2b96cbd9a5e743155ac60cf58c6f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
#!/bin/sh
#
# A simple script to load/unload the ZFS module stack.
#
BASE_DIR=$(dirname "$0")
SCRIPT_COMMON=common.sh
if [ -f "${BASE_DIR}/${SCRIPT_COMMON}" ]; then
. "${BASE_DIR}/${SCRIPT_COMMON}"
else
echo "Missing helper script ${SCRIPT_COMMON}" && exit 1
fi
PROG=zfs.sh
VERBOSE="no"
UNLOAD="no"
ZED_PIDFILE=${ZED_PIDFILE:-/var/run/zed.pid}
LDMOD=${LDMOD:-/sbin/modprobe}
KMOD_ZLIB_DEFLATE=${KMOD_ZLIB_DEFLATE:-zlib_deflate}
KMOD_ZLIB_INFLATE=${KMOD_ZLIB_INFLATE:-zlib_inflate}
KMOD_SPL=${KMOD_SPL:-spl}
KMOD_SPLAT=${KMOD_SPLAT:-splat}
KMOD_ZAVL=${KMOD_ZAVL:-zavl}
KMOD_ZNVPAIR=${KMOD_ZNVPAIR:-znvpair}
KMOD_ZUNICODE=${KMOD_ZUNICODE:-zunicode}
KMOD_ZCOMMON=${KMOD_ZCOMMON:-zcommon}
KMOD_ZLUA=${KMOD_ZLUA:-zlua}
KMOD_ICP=${KMOD_ICP:-icp}
KMOD_ZFS=${KMOD_ZFS:-zfs}
usage() {
cat << EOF
USAGE:
$0 [hvud] [module-options]
DESCRIPTION:
Load/unload the ZFS module stack.
OPTIONS:
-h Show this message
-v Verbose
-u Unload modules
EOF
}
while getopts 'hvu' OPTION; do
case $OPTION in
h)
usage
exit 1
;;
v)
VERBOSE="yes"
;;
u)
UNLOAD="yes"
;;
?)
usage
exit
;;
esac
done
kill_zed() {
if [ -f "$ZED_PIDFILE" ]; then
PID=$(cat "$ZED_PIDFILE")
kill "$PID"
fi
}
check_modules() {
LOADED_MODULES=""
MISSING_MODULES=""
for KMOD in $KMOD_SPL $KMOD_SPLAT $KMOD_ZAVL $KMOD_ZNVPAIR \
$KMOD_ZUNICODE $KMOD_ZCOMMON $KMOD_ZLUA $KMOD_ICP $KMOD_ZFS; do
NAME=$(basename "$KMOD" .ko)
if lsmod | grep -E -q "^${NAME}"; then
LOADED_MODULES="$LOADED_MODULES\t$NAME\n"
fi
if ! modinfo "$KMOD" >/dev/null 2>&1; then
MISSING_MODULES="$MISSING_MODULES\t${KMOD}\n"
fi
done
if [ -n "$LOADED_MODULES" ]; then
printf "Unload the kernel modules by running '%s -u':\n" "$PROG"
printf "%b" "$LOADED_MODULES"
exit 1
fi
if [ -n "$MISSING_MODULES" ]; then
printf "The following kernel modules can not be found:\n"
printf "%b" "$MISSING_MODULES"
exit 1
fi
return 0
}
load_module() {
KMOD=$1
FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}')
VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}')
if [ "$VERBOSE" = "yes" ]; then
echo "Loading: $FILE ($VERSION)"
fi
$LDMOD "$KMOD" >/dev/null 2>&1
# shellcheck disable=SC2181
if [ $? -ne 0 ]; then
echo "Failed to load $KMOD"
return 1
fi
return 0
}
load_modules() {
mkdir -p /etc/zfs
if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then
modprobe "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1
fi
if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then
modprobe "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1
fi
for KMOD in $KMOD_SPL $KMOD_SPLAT $KMOD_ZAVL $KMOD_ZNVPAIR \
$KMOD_ZUNICODE $KMOD_ZCOMMON $KMOD_ZLUA $KMOD_ICP $KMOD_ZFS; do
load_module "$KMOD" || return 1
done
if [ "$VERBOSE" = "yes" ]; then
echo "Successfully loaded ZFS module stack"
fi
return 0
}
unload_module() {
KMOD=$1
NAME=$(basename "$KMOD" .ko)
FILE=$(modinfo "$KMOD" | awk '/^filename:/ {print $2}')
VERSION=$(modinfo "$KMOD" | awk '/^version:/ {print $2}')
if [ "$VERBOSE" = "yes" ]; then
echo "Unloading: $KMOD ($VERSION)"
fi
rmmod "$NAME" || echo "Failed to unload $NAME"
return 0
}
unload_modules() {
for KMOD in $KMOD_ZFS $KMOD_ICP $KMOD_ZLUA $KMOD_ZCOMMON $KMOD_ZUNICODE \
$KMOD_ZNVPAIR $KMOD_ZAVL $KMOD_SPLAT $KMOD_SPL; do
NAME=$(basename "$KMOD" .ko)
USE_COUNT=$(lsmod | grep -E "^${NAME} " | awk '{print $3}')
if [ "$USE_COUNT" = "0" ] ; then
unload_module "$KMOD" || return 1
fi
done
if modinfo "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1; then
modprobe -r "$KMOD_ZLIB_DEFLATE" >/dev/null 2>&1
fi
if modinfo "$KMOD_ZLIB_INFLATE">/dev/null 2>&1; then
modprobe -r "$KMOD_ZLIB_INFLATE" >/dev/null 2>&1
fi
if [ "$VERBOSE" = "yes" ]; then
echo "Successfully unloaded ZFS module stack"
fi
return 0
}
stack_clear() {
STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size
STACK_TRACER_ENABLED=/proc/sys/kernel/stack_tracer_enabled
if [ -e "$STACK_MAX_SIZE" ]; then
echo 1 >"$STACK_TRACER_ENABLED"
echo 0 >"$STACK_MAX_SIZE"
fi
}
stack_check() {
STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size
STACK_TRACE=/sys/kernel/debug/tracing/stack_trace
STACK_LIMIT=7600
if [ -e "$STACK_MAX_SIZE" ]; then
STACK_SIZE=$(cat "$STACK_MAX_SIZE")
if [ "$STACK_SIZE" -ge "$STACK_LIMIT" ]; then
echo
echo "Warning: max stack size $STACK_SIZE bytes"
cat "$STACK_TRACE"
fi
fi
}
if [ "$(id -u)" != 0 ]; then
echo "Must run as root"
exit 1
fi
if [ "$UNLOAD" = "yes" ]; then
kill_zed
umount -t zfs -a
stack_check
unload_modules
else
stack_clear
check_modules
load_modules "$@"
udevadm trigger
udevadm settle
fi
exit 0
|
