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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
34dc7c2f BB |
10 | * See the License for the specific language governing permissions |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
ed828c0c | 23 | * Copyright (c) 2016 by Delphix. All rights reserved. |
f3c8c9e6 | 24 | * Copyright 2017 Jason King |
cc99f275 | 25 | * Copyright (c) 2017, Intel Corporation. |
34dc7c2f BB |
26 | */ |
27 | ||
34dc7c2f BB |
28 | #include <assert.h> |
29 | #include <sys/zfs_context.h> | |
30 | #include <sys/avl.h> | |
31 | #include <string.h> | |
32 | #include <stdio.h> | |
33 | #include <stdlib.h> | |
34 | #include <sys/spa.h> | |
35 | #include <sys/fs/zfs.h> | |
27d96d22 | 36 | #include <sys/zfs_refcount.h> |
e89f1295 | 37 | #include <sys/zfs_ioctl.h> |
ed828c0c | 38 | #include <dlfcn.h> |
e89f1295 | 39 | #include <libzutil.h> |
34dc7c2f BB |
40 | |
41 | /* | |
42 | * Routines needed by more than one client of libzpool. | |
43 | */ | |
44 | ||
34dc7c2f | 45 | static void |
b128c09f | 46 | show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) |
34dc7c2f | 47 | { |
34dc7c2f | 48 | vdev_stat_t *vs; |
193a37cb | 49 | vdev_stat_t *v0 = { 0 }; |
34dc7c2f BB |
50 | uint64_t sec; |
51 | uint64_t is_log = 0; | |
b128c09f BB |
52 | nvlist_t **child; |
53 | uint_t c, children; | |
34dc7c2f BB |
54 | char used[6], avail[6]; |
55 | char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; | |
34dc7c2f | 56 | |
193a37cb TH |
57 | v0 = umem_zalloc(sizeof (*v0), UMEM_NOFAIL); |
58 | ||
b128c09f BB |
59 | if (indent == 0 && desc != NULL) { |
60 | (void) printf(" " | |
34dc7c2f | 61 | " capacity operations bandwidth ---- errors ----\n"); |
b128c09f | 62 | (void) printf("description " |
34dc7c2f BB |
63 | "used avail read write read write read write cksum\n"); |
64 | } | |
65 | ||
b128c09f | 66 | if (desc != NULL) { |
a926aab9 | 67 | const char *suffix = ""; |
d1807f16 | 68 | const char *bias = NULL; |
cc99f275 | 69 | char bias_suffix[32]; |
b128c09f | 70 | |
cc99f275 DB |
71 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); |
72 | (void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, | |
73 | &bias); | |
428870ff | 74 | if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, |
b128c09f | 75 | (uint64_t **)&vs, &c) != 0) |
193a37cb | 76 | vs = v0; |
b128c09f | 77 | |
cc99f275 DB |
78 | if (bias != NULL) { |
79 | (void) snprintf(bias_suffix, sizeof (bias_suffix), | |
80 | " (%s)", bias); | |
81 | suffix = bias_suffix; | |
82 | } else if (is_log) { | |
83 | suffix = " (log)"; | |
84 | } | |
85 | ||
b128c09f BB |
86 | sec = MAX(1, vs->vs_timestamp / NANOSEC); |
87 | ||
f3c8c9e6 JK |
88 | nicenum(vs->vs_alloc, used, sizeof (used)); |
89 | nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail)); | |
90 | nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops)); | |
91 | nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops)); | |
92 | nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes, | |
93 | sizeof (rbytes)); | |
94 | nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes, | |
95 | sizeof (wbytes)); | |
96 | nicenum(vs->vs_read_errors, rerr, sizeof (rerr)); | |
97 | nicenum(vs->vs_write_errors, werr, sizeof (werr)); | |
98 | nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr)); | |
b128c09f BB |
99 | |
100 | (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", | |
101 | indent, "", | |
b128c09f | 102 | desc, |
cc99f275 DB |
103 | (int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)), |
104 | suffix, | |
b128c09f BB |
105 | vs->vs_space ? 6 : 0, vs->vs_space ? used : "", |
106 | vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", | |
107 | rops, wops, rbytes, wbytes, rerr, werr, cerr); | |
108 | } | |
790c880e | 109 | umem_free(v0, sizeof (*v0)); |
b128c09f BB |
110 | |
111 | if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) | |
34dc7c2f BB |
112 | return; |
113 | ||
114 | for (c = 0; c < children; c++) { | |
115 | nvlist_t *cnv = child[c]; | |
d1807f16 RY |
116 | const char *cname = NULL; |
117 | char *tname; | |
34dc7c2f | 118 | uint64_t np; |
ccc92611 | 119 | int len; |
34dc7c2f BB |
120 | if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && |
121 | nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) | |
d1807f16 | 122 | cname = "<unknown>"; |
ccc92611 | 123 | len = strlen(cname) + 2; |
124 | tname = umem_zalloc(len, UMEM_NOFAIL); | |
125 | (void) strlcpy(tname, cname, len); | |
34dc7c2f BB |
126 | if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) |
127 | tname[strlen(tname)] = '0' + np; | |
b128c09f | 128 | show_vdev_stats(tname, ctype, cnv, indent + 2); |
790c880e | 129 | umem_free(tname, len); |
34dc7c2f BB |
130 | } |
131 | } | |
132 | ||
133 | void | |
134 | show_pool_stats(spa_t *spa) | |
135 | { | |
136 | nvlist_t *config, *nvroot; | |
d1807f16 | 137 | const char *name; |
34dc7c2f | 138 | |
b128c09f | 139 | VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); |
34dc7c2f BB |
140 | |
141 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
142 | &nvroot) == 0); | |
143 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
144 | &name) == 0); | |
145 | ||
b128c09f BB |
146 | show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); |
147 | show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); | |
148 | show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); | |
149 | ||
150 | nvlist_free(config); | |
34dc7c2f | 151 | } |
ed828c0c | 152 | |
edc508ac CS |
153 | /* *k_out must be freed by the caller */ |
154 | static int | |
155 | set_global_var_parse_kv(const char *arg, char **k_out, u_longlong_t *v_out) | |
156 | { | |
157 | int err; | |
158 | VERIFY(arg); | |
159 | char *d = strdup(arg); | |
160 | ||
161 | char *save = NULL; | |
162 | char *k = strtok_r(d, "=", &save); | |
163 | char *v_str = strtok_r(NULL, "=", &save); | |
164 | char *follow = strtok_r(NULL, "=", &save); | |
165 | if (k == NULL || v_str == NULL || follow != NULL) { | |
166 | err = EINVAL; | |
167 | goto err_free; | |
168 | } | |
169 | ||
170 | u_longlong_t val = strtoull(v_str, NULL, 0); | |
171 | if (val > UINT32_MAX) { | |
172 | fprintf(stderr, "Value for global variable '%s' must " | |
173 | "be a 32-bit unsigned integer, got '%s'\n", k, v_str); | |
174 | err = EOVERFLOW; | |
175 | goto err_free; | |
176 | } | |
177 | ||
d25153d5 | 178 | *k_out = strdup(k); |
edc508ac | 179 | *v_out = val; |
d25153d5 | 180 | free(d); |
edc508ac CS |
181 | return (0); |
182 | ||
183 | err_free: | |
d25153d5 | 184 | free(d); |
edc508ac CS |
185 | |
186 | return (err); | |
187 | } | |
188 | ||
ed828c0c GM |
189 | /* |
190 | * Sets given global variable in libzpool to given unsigned 32-bit value. | |
191 | * arg: "<variable>=<value>" | |
192 | */ | |
193 | int | |
edc508ac | 194 | set_global_var(char const *arg) |
ed828c0c GM |
195 | { |
196 | void *zpoolhdl; | |
edc508ac | 197 | char *varname; |
ed828c0c | 198 | u_longlong_t val; |
edc508ac | 199 | int ret; |
ed828c0c | 200 | |
b5fffa1d | 201 | #ifndef _ZFS_LITTLE_ENDIAN |
ed828c0c GM |
202 | /* |
203 | * On big endian systems changing a 64-bit variable would set the high | |
204 | * 32 bits instead of the low 32 bits, which could cause unexpected | |
205 | * results. | |
206 | */ | |
207 | fprintf(stderr, "Setting global variables is only supported on " | |
208 | "little-endian systems\n"); | |
edc508ac CS |
209 | ret = ENOTSUP; |
210 | goto out_ret; | |
ed828c0c | 211 | #endif |
edc508ac CS |
212 | |
213 | if ((ret = set_global_var_parse_kv(arg, &varname, &val)) != 0) { | |
214 | goto out_ret; | |
ed828c0c GM |
215 | } |
216 | ||
217 | zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); | |
218 | if (zpoolhdl != NULL) { | |
219 | uint32_t *var; | |
220 | var = dlsym(zpoolhdl, varname); | |
221 | if (var == NULL) { | |
222 | fprintf(stderr, "Global variable '%s' does not exist " | |
223 | "in libzpool.so\n", varname); | |
edc508ac CS |
224 | ret = EINVAL; |
225 | goto out_dlclose; | |
ed828c0c GM |
226 | } |
227 | *var = (uint32_t)val; | |
228 | ||
ed828c0c GM |
229 | } else { |
230 | fprintf(stderr, "Failed to open libzpool.so to set global " | |
231 | "variable\n"); | |
edc508ac | 232 | ret = EIO; |
c6b161e3 | 233 | goto out_free; |
ed828c0c GM |
234 | } |
235 | ||
edc508ac CS |
236 | ret = 0; |
237 | ||
238 | out_dlclose: | |
239 | dlclose(zpoolhdl); | |
c6b161e3 | 240 | out_free: |
edc508ac CS |
241 | free(varname); |
242 | out_ret: | |
243 | return (ret); | |
ed828c0c | 244 | } |
e89f1295 DB |
245 | |
246 | static nvlist_t * | |
247 | refresh_config(void *unused, nvlist_t *tryconfig) | |
248 | { | |
56050599 | 249 | (void) unused; |
e89f1295 DB |
250 | return (spa_tryimport(tryconfig)); |
251 | } | |
252 | ||
514498fe BB |
253 | #if defined(__FreeBSD__) |
254 | ||
255 | #include <sys/param.h> | |
256 | #include <sys/sysctl.h> | |
257 | #include <os/freebsd/zfs/sys/zfs_ioctl_compat.h> | |
258 | ||
e89f1295 | 259 | static int |
514498fe | 260 | pool_active(void *unused, const char *name, uint64_t guid, boolean_t *isactive) |
e89f1295 | 261 | { |
56050599 | 262 | (void) unused, (void) guid; |
514498fe BB |
263 | zfs_iocparm_t zp; |
264 | zfs_cmd_t *zc = NULL; | |
20b867f5 | 265 | #ifdef ZFS_LEGACY_SUPPORT |
514498fe | 266 | zfs_cmd_legacy_t *zcl = NULL; |
20b867f5 | 267 | #endif |
514498fe BB |
268 | unsigned long request; |
269 | int ret; | |
270 | ||
271 | int fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC); | |
272 | if (fd < 0) | |
273 | return (-1); | |
e89f1295 DB |
274 | |
275 | /* | |
514498fe BB |
276 | * Use ZFS_IOC_POOL_STATS to check if the pool is active. We want to |
277 | * avoid adding a dependency on libzfs_core solely for this ioctl(), | |
278 | * therefore we manually craft the stats command. Note that the command | |
279 | * ID is identical between the openzfs and legacy ioctl() formats. | |
e89f1295 | 280 | */ |
514498fe BB |
281 | int ver = ZFS_IOCVER_NONE; |
282 | size_t ver_size = sizeof (ver); | |
e89f1295 | 283 | |
514498fe BB |
284 | sysctlbyname("vfs.zfs.version.ioctl", &ver, &ver_size, NULL, 0); |
285 | ||
286 | switch (ver) { | |
287 | case ZFS_IOCVER_OZFS: | |
288 | zc = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL); | |
289 | ||
290 | (void) strlcpy(zc->zc_name, name, sizeof (zc->zc_name)); | |
291 | zp.zfs_cmd = (uint64_t)(uintptr_t)zc; | |
292 | zp.zfs_cmd_size = sizeof (zfs_cmd_t); | |
293 | zp.zfs_ioctl_version = ZFS_IOCVER_OZFS; | |
294 | ||
295 | request = _IOWR('Z', ZFS_IOC_POOL_STATS, zfs_iocparm_t); | |
296 | ret = ioctl(fd, request, &zp); | |
297 | ||
298 | free((void *)(uintptr_t)zc->zc_nvlist_dst); | |
299 | umem_free(zc, sizeof (zfs_cmd_t)); | |
300 | ||
301 | break; | |
20b867f5 | 302 | #ifdef ZFS_LEGACY_SUPPORT |
514498fe BB |
303 | case ZFS_IOCVER_LEGACY: |
304 | zcl = umem_zalloc(sizeof (zfs_cmd_legacy_t), UMEM_NOFAIL); | |
305 | ||
306 | (void) strlcpy(zcl->zc_name, name, sizeof (zcl->zc_name)); | |
307 | zp.zfs_cmd = (uint64_t)(uintptr_t)zcl; | |
308 | zp.zfs_cmd_size = sizeof (zfs_cmd_legacy_t); | |
309 | zp.zfs_ioctl_version = ZFS_IOCVER_LEGACY; | |
310 | ||
311 | request = _IOWR('Z', ZFS_IOC_POOL_STATS, zfs_iocparm_t); | |
312 | ret = ioctl(fd, request, &zp); | |
e89f1295 | 313 | |
514498fe BB |
314 | free((void *)(uintptr_t)zcl->zc_nvlist_dst); |
315 | umem_free(zcl, sizeof (zfs_cmd_legacy_t)); | |
e89f1295 | 316 | |
514498fe | 317 | break; |
20b867f5 | 318 | #endif |
514498fe BB |
319 | default: |
320 | fprintf(stderr, "unrecognized zfs ioctl version %d", ver); | |
321 | exit(1); | |
322 | } | |
323 | ||
324 | (void) close(fd); | |
325 | ||
326 | *isactive = (ret == 0); | |
e89f1295 | 327 | |
514498fe BB |
328 | return (0); |
329 | } | |
330 | #else | |
331 | static int | |
332 | pool_active(void *unused, const char *name, uint64_t guid, | |
333 | boolean_t *isactive) | |
334 | { | |
56050599 | 335 | (void) unused, (void) guid; |
514498fe BB |
336 | int fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC); |
337 | if (fd < 0) | |
338 | return (-1); | |
339 | ||
340 | /* | |
341 | * Use ZFS_IOC_POOL_STATS to check if a pool is active. | |
342 | */ | |
343 | zfs_cmd_t *zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL); | |
e89f1295 | 344 | (void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name)); |
e89f1295 | 345 | |
514498fe | 346 | int ret = ioctl(fd, ZFS_IOC_POOL_STATS, zcp); |
e89f1295 | 347 | |
e89f1295 | 348 | free((void *)(uintptr_t)zcp->zc_nvlist_dst); |
e89f1295 DB |
349 | umem_free(zcp, sizeof (zfs_cmd_t)); |
350 | ||
351 | (void) close(fd); | |
352 | ||
353 | *isactive = (ret == 0); | |
354 | ||
355 | return (0); | |
356 | } | |
514498fe | 357 | #endif |
e89f1295 | 358 | |
a2d5643f | 359 | pool_config_ops_t libzpool_config_ops = { |
e89f1295 DB |
360 | .pco_refresh_config = refresh_config, |
361 | .pco_pool_active = pool_active, | |
362 | }; |