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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 | |
9 | * or http://www.opensolaris.org/os/licensing. | |
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> | |
36 | #include <sys/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) { |
cc99f275 DB |
67 | char *suffix = "", *bias = NULL; |
68 | char bias_suffix[32]; | |
b128c09f | 69 | |
cc99f275 DB |
70 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); |
71 | (void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, | |
72 | &bias); | |
428870ff | 73 | if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, |
b128c09f | 74 | (uint64_t **)&vs, &c) != 0) |
193a37cb | 75 | vs = v0; |
b128c09f | 76 | |
cc99f275 DB |
77 | if (bias != NULL) { |
78 | (void) snprintf(bias_suffix, sizeof (bias_suffix), | |
79 | " (%s)", bias); | |
80 | suffix = bias_suffix; | |
81 | } else if (is_log) { | |
82 | suffix = " (log)"; | |
83 | } | |
84 | ||
b128c09f BB |
85 | sec = MAX(1, vs->vs_timestamp / NANOSEC); |
86 | ||
f3c8c9e6 JK |
87 | nicenum(vs->vs_alloc, used, sizeof (used)); |
88 | nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail)); | |
89 | nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops)); | |
90 | nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops)); | |
91 | nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes, | |
92 | sizeof (rbytes)); | |
93 | nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes, | |
94 | sizeof (wbytes)); | |
95 | nicenum(vs->vs_read_errors, rerr, sizeof (rerr)); | |
96 | nicenum(vs->vs_write_errors, werr, sizeof (werr)); | |
97 | nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr)); | |
b128c09f BB |
98 | |
99 | (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", | |
100 | indent, "", | |
b128c09f | 101 | desc, |
cc99f275 DB |
102 | (int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)), |
103 | suffix, | |
b128c09f BB |
104 | vs->vs_space ? 6 : 0, vs->vs_space ? used : "", |
105 | vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", | |
106 | rops, wops, rbytes, wbytes, rerr, werr, cerr); | |
107 | } | |
790c880e | 108 | umem_free(v0, sizeof (*v0)); |
b128c09f BB |
109 | |
110 | if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) | |
34dc7c2f BB |
111 | return; |
112 | ||
113 | for (c = 0; c < children; c++) { | |
114 | nvlist_t *cnv = child[c]; | |
ccc92611 | 115 | char *cname = NULL, *tname; |
34dc7c2f | 116 | uint64_t np; |
ccc92611 | 117 | int len; |
34dc7c2f BB |
118 | if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && |
119 | nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) | |
120 | cname = "<unknown>"; | |
ccc92611 | 121 | len = strlen(cname) + 2; |
122 | tname = umem_zalloc(len, UMEM_NOFAIL); | |
123 | (void) strlcpy(tname, cname, len); | |
34dc7c2f BB |
124 | if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) |
125 | tname[strlen(tname)] = '0' + np; | |
b128c09f | 126 | show_vdev_stats(tname, ctype, cnv, indent + 2); |
790c880e | 127 | umem_free(tname, len); |
34dc7c2f BB |
128 | } |
129 | } | |
130 | ||
131 | void | |
132 | show_pool_stats(spa_t *spa) | |
133 | { | |
134 | nvlist_t *config, *nvroot; | |
135 | char *name; | |
136 | ||
b128c09f | 137 | VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); |
34dc7c2f BB |
138 | |
139 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
140 | &nvroot) == 0); | |
141 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
142 | &name) == 0); | |
143 | ||
b128c09f BB |
144 | show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); |
145 | show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); | |
146 | show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); | |
147 | ||
148 | nvlist_free(config); | |
34dc7c2f | 149 | } |
ed828c0c GM |
150 | |
151 | /* | |
152 | * Sets given global variable in libzpool to given unsigned 32-bit value. | |
153 | * arg: "<variable>=<value>" | |
154 | */ | |
155 | int | |
156 | set_global_var(char *arg) | |
157 | { | |
158 | void *zpoolhdl; | |
159 | char *varname = arg, *varval; | |
160 | u_longlong_t val; | |
161 | ||
162 | #ifndef _LITTLE_ENDIAN | |
163 | /* | |
164 | * On big endian systems changing a 64-bit variable would set the high | |
165 | * 32 bits instead of the low 32 bits, which could cause unexpected | |
166 | * results. | |
167 | */ | |
168 | fprintf(stderr, "Setting global variables is only supported on " | |
169 | "little-endian systems\n"); | |
170 | return (ENOTSUP); | |
171 | #endif | |
7b0dc2a3 | 172 | if (arg != NULL && (varval = strchr(arg, '=')) != NULL) { |
ed828c0c GM |
173 | *varval = '\0'; |
174 | varval++; | |
175 | val = strtoull(varval, NULL, 0); | |
176 | if (val > UINT32_MAX) { | |
177 | fprintf(stderr, "Value for global variable '%s' must " | |
178 | "be a 32-bit unsigned integer\n", varname); | |
179 | return (EOVERFLOW); | |
180 | } | |
181 | } else { | |
182 | return (EINVAL); | |
183 | } | |
184 | ||
185 | zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); | |
186 | if (zpoolhdl != NULL) { | |
187 | uint32_t *var; | |
188 | var = dlsym(zpoolhdl, varname); | |
189 | if (var == NULL) { | |
190 | fprintf(stderr, "Global variable '%s' does not exist " | |
191 | "in libzpool.so\n", varname); | |
192 | return (EINVAL); | |
193 | } | |
194 | *var = (uint32_t)val; | |
195 | ||
196 | dlclose(zpoolhdl); | |
197 | } else { | |
198 | fprintf(stderr, "Failed to open libzpool.so to set global " | |
199 | "variable\n"); | |
200 | return (EIO); | |
201 | } | |
202 | ||
203 | return (0); | |
204 | } | |
e89f1295 DB |
205 | |
206 | static nvlist_t * | |
207 | refresh_config(void *unused, nvlist_t *tryconfig) | |
208 | { | |
209 | return (spa_tryimport(tryconfig)); | |
210 | } | |
211 | ||
212 | static int | |
213 | pool_active(void *unused, const char *name, uint64_t guid, | |
214 | boolean_t *isactive) | |
215 | { | |
216 | zfs_cmd_t *zcp; | |
217 | nvlist_t *innvl; | |
218 | char *packed = NULL; | |
219 | size_t size = 0; | |
220 | int fd, ret; | |
221 | ||
222 | /* | |
223 | * Use ZFS_IOC_POOL_SYNC to confirm if a pool is active | |
224 | */ | |
225 | ||
226 | fd = open("/dev/zfs", O_RDWR); | |
227 | if (fd < 0) | |
228 | return (-1); | |
229 | ||
230 | zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL); | |
231 | ||
232 | innvl = fnvlist_alloc(); | |
233 | fnvlist_add_boolean_value(innvl, "force", B_FALSE); | |
234 | ||
235 | (void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name)); | |
236 | packed = fnvlist_pack(innvl, &size); | |
237 | zcp->zc_nvlist_src = (uint64_t)(uintptr_t)packed; | |
238 | zcp->zc_nvlist_src_size = size; | |
239 | ||
240 | ret = ioctl(fd, ZFS_IOC_POOL_SYNC, zcp); | |
241 | ||
242 | fnvlist_pack_free(packed, size); | |
243 | free((void *)(uintptr_t)zcp->zc_nvlist_dst); | |
244 | nvlist_free(innvl); | |
245 | umem_free(zcp, sizeof (zfs_cmd_t)); | |
246 | ||
247 | (void) close(fd); | |
248 | ||
249 | *isactive = (ret == 0); | |
250 | ||
251 | return (0); | |
252 | } | |
253 | ||
254 | const pool_config_ops_t libzpool_config_ops = { | |
255 | .pco_refresh_config = refresh_config, | |
256 | .pco_pool_active = pool_active, | |
257 | }; |