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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. |
cae5b340 | 23 | * Copyright (c) 2016 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | #include <assert.h> |
27 | #include <sys/zfs_context.h> | |
28 | #include <sys/avl.h> | |
29 | #include <string.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <sys/spa.h> | |
33 | #include <sys/fs/zfs.h> | |
34 | #include <sys/refcount.h> | |
cae5b340 | 35 | #include <dlfcn.h> |
34dc7c2f BB |
36 | |
37 | /* | |
38 | * Routines needed by more than one client of libzpool. | |
39 | */ | |
40 | ||
41 | void | |
42 | nicenum(uint64_t num, char *buf) | |
43 | { | |
44 | uint64_t n = num; | |
45 | int index = 0; | |
46 | char u; | |
47 | ||
48 | while (n >= 1024) { | |
49 | n = (n + (1024 / 2)) / 1024; /* Round up or down */ | |
50 | index++; | |
51 | } | |
52 | ||
53 | u = " KMGTPE"[index]; | |
54 | ||
55 | if (index == 0) { | |
56 | (void) sprintf(buf, "%llu", (u_longlong_t)n); | |
57 | } else if (n < 10 && (num & (num - 1)) != 0) { | |
58 | (void) sprintf(buf, "%.2f%c", | |
59 | (double)num / (1ULL << 10 * index), u); | |
60 | } else if (n < 100 && (num & (num - 1)) != 0) { | |
61 | (void) sprintf(buf, "%.1f%c", | |
62 | (double)num / (1ULL << 10 * index), u); | |
63 | } else { | |
64 | (void) sprintf(buf, "%llu%c", (u_longlong_t)n, u); | |
65 | } | |
66 | } | |
67 | ||
68 | static void | |
b128c09f | 69 | show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) |
34dc7c2f | 70 | { |
34dc7c2f | 71 | vdev_stat_t *vs; |
cae5b340 | 72 | vdev_stat_t *v0 = { 0 }; |
34dc7c2f BB |
73 | uint64_t sec; |
74 | uint64_t is_log = 0; | |
b128c09f BB |
75 | nvlist_t **child; |
76 | uint_t c, children; | |
34dc7c2f BB |
77 | char used[6], avail[6]; |
78 | char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; | |
79 | char *prefix = ""; | |
80 | ||
cae5b340 AX |
81 | v0 = umem_zalloc(sizeof (*v0), UMEM_NOFAIL); |
82 | ||
b128c09f BB |
83 | if (indent == 0 && desc != NULL) { |
84 | (void) printf(" " | |
34dc7c2f | 85 | " capacity operations bandwidth ---- errors ----\n"); |
b128c09f | 86 | (void) printf("description " |
34dc7c2f BB |
87 | "used avail read write read write read write cksum\n"); |
88 | } | |
89 | ||
b128c09f BB |
90 | if (desc != NULL) { |
91 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); | |
92 | ||
93 | if (is_log) | |
94 | prefix = "log "; | |
95 | ||
428870ff | 96 | if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, |
b128c09f | 97 | (uint64_t **)&vs, &c) != 0) |
cae5b340 | 98 | vs = v0; |
b128c09f BB |
99 | |
100 | sec = MAX(1, vs->vs_timestamp / NANOSEC); | |
101 | ||
102 | nicenum(vs->vs_alloc, used); | |
103 | nicenum(vs->vs_space - vs->vs_alloc, avail); | |
104 | nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops); | |
105 | nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops); | |
106 | nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes); | |
107 | nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes); | |
108 | nicenum(vs->vs_read_errors, rerr); | |
109 | nicenum(vs->vs_write_errors, werr); | |
110 | nicenum(vs->vs_checksum_errors, cerr); | |
111 | ||
112 | (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", | |
113 | indent, "", | |
114 | prefix, | |
b8864a23 | 115 | (int)(indent+strlen(prefix)-25-(vs->vs_space ? 0 : 12)), |
b128c09f BB |
116 | desc, |
117 | vs->vs_space ? 6 : 0, vs->vs_space ? used : "", | |
118 | vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", | |
119 | rops, wops, rbytes, wbytes, rerr, werr, cerr); | |
120 | } | |
cae5b340 | 121 | free(v0); |
b128c09f BB |
122 | |
123 | if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) | |
34dc7c2f BB |
124 | return; |
125 | ||
126 | for (c = 0; c < children; c++) { | |
127 | nvlist_t *cnv = child[c]; | |
cae5b340 | 128 | char *cname = NULL, *tname; |
34dc7c2f | 129 | uint64_t np; |
cae5b340 | 130 | int len; |
34dc7c2f BB |
131 | if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && |
132 | nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) | |
133 | cname = "<unknown>"; | |
cae5b340 AX |
134 | len = strlen(cname) + 2; |
135 | tname = umem_zalloc(len, UMEM_NOFAIL); | |
136 | (void) strlcpy(tname, cname, len); | |
34dc7c2f BB |
137 | if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) |
138 | tname[strlen(tname)] = '0' + np; | |
b128c09f | 139 | show_vdev_stats(tname, ctype, cnv, indent + 2); |
34dc7c2f BB |
140 | free(tname); |
141 | } | |
142 | } | |
143 | ||
144 | void | |
145 | show_pool_stats(spa_t *spa) | |
146 | { | |
147 | nvlist_t *config, *nvroot; | |
148 | char *name; | |
149 | ||
b128c09f | 150 | VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); |
34dc7c2f BB |
151 | |
152 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
153 | &nvroot) == 0); | |
154 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
155 | &name) == 0); | |
156 | ||
b128c09f BB |
157 | show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); |
158 | show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); | |
159 | show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); | |
160 | ||
161 | nvlist_free(config); | |
34dc7c2f | 162 | } |
cae5b340 AX |
163 | |
164 | /* | |
165 | * Sets given global variable in libzpool to given unsigned 32-bit value. | |
166 | * arg: "<variable>=<value>" | |
167 | */ | |
168 | int | |
169 | set_global_var(char *arg) | |
170 | { | |
171 | void *zpoolhdl; | |
172 | char *varname = arg, *varval; | |
173 | u_longlong_t val; | |
174 | ||
175 | #ifndef _LITTLE_ENDIAN | |
176 | /* | |
177 | * On big endian systems changing a 64-bit variable would set the high | |
178 | * 32 bits instead of the low 32 bits, which could cause unexpected | |
179 | * results. | |
180 | */ | |
181 | fprintf(stderr, "Setting global variables is only supported on " | |
182 | "little-endian systems\n"); | |
183 | return (ENOTSUP); | |
184 | #endif | |
185 | if (arg != NULL && (varval = strchr(arg, '=')) != NULL) { | |
186 | *varval = '\0'; | |
187 | varval++; | |
188 | val = strtoull(varval, NULL, 0); | |
189 | if (val > UINT32_MAX) { | |
190 | fprintf(stderr, "Value for global variable '%s' must " | |
191 | "be a 32-bit unsigned integer\n", varname); | |
192 | return (EOVERFLOW); | |
193 | } | |
194 | } else { | |
195 | return (EINVAL); | |
196 | } | |
197 | ||
198 | zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); | |
199 | if (zpoolhdl != NULL) { | |
200 | uint32_t *var; | |
201 | var = dlsym(zpoolhdl, varname); | |
202 | if (var == NULL) { | |
203 | fprintf(stderr, "Global variable '%s' does not exist " | |
204 | "in libzpool.so\n", varname); | |
205 | return (EINVAL); | |
206 | } | |
207 | *var = (uint32_t)val; | |
208 | ||
209 | dlclose(zpoolhdl); | |
210 | } else { | |
211 | fprintf(stderr, "Failed to open libzpool.so to set global " | |
212 | "variable\n"); | |
213 | return (EIO); | |
214 | } | |
215 | ||
216 | return (0); | |
217 | } |