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 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2016 by Delphix. All rights reserved. 24 */ 25 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> 35 #include <dlfcn.h> 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 69 show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) 70 { 71 vdev_stat_t *vs; 72 vdev_stat_t v0 = { 0 }; 73 uint64_t sec; 74 uint64_t is_log = 0; 75 nvlist_t **child; 76 uint_t c, children; 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 81 if (indent == 0 && desc != NULL) { 82 (void) printf(" " 83 " capacity operations bandwidth ---- errors ----\n"); 84 (void) printf("description " 85 "used avail read write read write read write cksum\n"); 86 } 87 88 if (desc != NULL) { 89 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); 90 91 if (is_log) 92 prefix = "log "; 93 94 if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 95 (uint64_t **)&vs, &c) != 0) 96 vs = &v0; 97 98 sec = MAX(1, vs->vs_timestamp / NANOSEC); 99 100 nicenum(vs->vs_alloc, used); 101 nicenum(vs->vs_space - vs->vs_alloc, avail); 102 nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops); 103 nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops); 104 nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes); 105 nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes); 106 nicenum(vs->vs_read_errors, rerr); 107 nicenum(vs->vs_write_errors, werr); 108 nicenum(vs->vs_checksum_errors, cerr); 109 110 (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", 111 indent, "", 112 prefix, 113 indent + strlen(prefix) - 25 - (vs->vs_space ? 0 : 12), 114 desc, 115 vs->vs_space ? 6 : 0, vs->vs_space ? used : "", 116 vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", 117 rops, wops, rbytes, wbytes, rerr, werr, cerr); 118 } 119 120 if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) 121 return; 122 123 for (c = 0; c < children; c++) { 124 nvlist_t *cnv = child[c]; 125 char *cname, *tname; 126 uint64_t np; 127 if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && 128 nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) 129 cname = "<unknown>"; 130 tname = calloc(1, strlen(cname) + 2); 131 (void) strcpy(tname, cname); 132 if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) 133 tname[strlen(tname)] = '0' + np; 134 show_vdev_stats(tname, ctype, cnv, indent + 2); 135 free(tname); 136 } 137 } 138 139 void 140 show_pool_stats(spa_t *spa) 141 { 142 nvlist_t *config, *nvroot; 143 char *name; 144 145 VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); 146 147 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 148 &nvroot) == 0); 149 VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 150 &name) == 0); 151 152 show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); 153 show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); 154 show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); 155 156 nvlist_free(config); 157 } 158 159 /* 160 * Sets given global variable in libzpool to given unsigned 32-bit value. 161 * arg: "<variable>=<value>" 162 */ 163 int 164 set_global_var(char *arg) 165 { 166 void *zpoolhdl; 167 char *varname = arg, *varval; 168 u_longlong_t val; 169 170 #ifndef _LITTLE_ENDIAN 171 /* 172 * On big endian systems changing a 64-bit variable would set the high 173 * 32 bits instead of the low 32 bits, which could cause unexpected 174 * results. 175 */ 176 fprintf(stderr, "Setting global variables is only supported on " 177 "little-endian systems\n", varname); 178 return (ENOTSUP); 179 #endif 180 if ((varval = strchr(arg, '=')) != NULL) { 181 *varval = '\0'; 182 varval++; 183 val = strtoull(varval, NULL, 0); 184 if (val > UINT32_MAX) { 185 fprintf(stderr, "Value for global variable '%s' must " 186 "be a 32-bit unsigned integer\n", varname); 187 return (EOVERFLOW); 188 } 189 } else { 190 return (EINVAL); 191 } 192 193 zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); 194 if (zpoolhdl != NULL) { 195 uint32_t *var; 196 var = dlsym(zpoolhdl, varname); 197 if (var == NULL) { 198 fprintf(stderr, "Global variable '%s' does not exist " 199 "in libzpool.so\n", varname); 200 return (EINVAL); 201 } 202 *var = (uint32_t)val; 203 204 dlclose(zpoolhdl); 205 } else { 206 fprintf(stderr, "Failed to open libzpool.so to set global " 207 "variable\n"); 208 return (EIO); 209 } 210 211 return (0); 212 } 213