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 * Copyright 2017 RackTop Systems. 25 * Copyright (c) 2017, Intel Corporation. 26 */ 27 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> 37 #include <dlfcn.h> 38 39 extern void nicenum(uint64_t num, char *buf, size_t); 40 41 /* 42 * Routines needed by more than one client of libzpool. 43 */ 44 45 static void 46 show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) 47 { 48 vdev_stat_t *vs; 49 vdev_stat_t v0 = { 0 }; 50 uint64_t sec; 51 uint64_t is_log = 0; 52 nvlist_t **child; 53 uint_t c, children; 54 char used[6], avail[6]; 55 char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; 56 57 if (indent == 0 && desc != NULL) { 58 (void) printf(" " 59 " capacity operations bandwidth ---- errors ----\n"); 60 (void) printf("description " 61 "used avail read write read write read write cksum\n"); 62 } 63 64 if (desc != NULL) { 65 char *suffix = "", *bias = NULL; 66 char bias_suffix[32]; 67 68 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); 69 (void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, 70 &bias); 71 if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 72 (uint64_t **)&vs, &c) != 0) 73 vs = &v0; 74 75 if (bias != NULL) { 76 (void) snprintf(bias_suffix, sizeof (bias_suffix), 77 " (%s)", bias); 78 suffix = bias_suffix; 79 } else if (is_log) { 80 suffix = " (log)"; 81 } 82 83 sec = MAX(1, vs->vs_timestamp / NANOSEC); 84 85 nicenum(vs->vs_alloc, used, sizeof (used)); 86 nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail)); 87 nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops)); 88 nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops)); 89 nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes, 90 sizeof (rbytes)); 91 nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes, 92 sizeof (wbytes)); 93 nicenum(vs->vs_read_errors, rerr, sizeof (rerr)); 94 nicenum(vs->vs_write_errors, werr, sizeof (werr)); 95 nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr)); 96 97 (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", 98 indent, "", 99 desc, 100 (int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)), 101 suffix, 102 vs->vs_space ? 6 : 0, vs->vs_space ? used : "", 103 vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", 104 rops, wops, rbytes, wbytes, rerr, werr, cerr); 105 } 106 107 if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) 108 return; 109 110 for (c = 0; c < children; c++) { 111 nvlist_t *cnv = child[c]; 112 char *cname, *tname; 113 uint64_t np; 114 if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && 115 nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) 116 cname = "<unknown>"; 117 tname = calloc(1, strlen(cname) + 2); 118 (void) strcpy(tname, cname); 119 if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) 120 tname[strlen(tname)] = '0' + np; 121 show_vdev_stats(tname, ctype, cnv, indent + 2); 122 free(tname); 123 } 124 } 125 126 void 127 show_pool_stats(spa_t *spa) 128 { 129 nvlist_t *config, *nvroot; 130 char *name; 131 132 VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); 133 134 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 135 &nvroot) == 0); 136 VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 137 &name) == 0); 138 139 show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); 140 show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); 141 show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); 142 143 nvlist_free(config); 144 } 145 146 /* 147 * Sets given global variable in libzpool to given unsigned 32-bit value. 148 * arg: "<variable>=<value>" 149 */ 150 int 151 set_global_var(char *arg) 152 { 153 void *zpoolhdl; 154 char *varname = arg, *varval; 155 u_longlong_t val; 156 157 #ifndef _LITTLE_ENDIAN 158 /* 159 * On big endian systems changing a 64-bit variable would set the high 160 * 32 bits instead of the low 32 bits, which could cause unexpected 161 * results. 162 */ 163 fprintf(stderr, "Setting global variables is only supported on " 164 "little-endian systems\n", varname); 165 return (ENOTSUP); 166 #endif 167 if ((varval = strchr(arg, '=')) != NULL) { 168 *varval = '\0'; 169 varval++; 170 val = strtoull(varval, NULL, 0); 171 if (val > UINT32_MAX) { 172 fprintf(stderr, "Value for global variable '%s' must " 173 "be a 32-bit unsigned integer\n", varname); 174 return (EOVERFLOW); 175 } 176 } else { 177 return (EINVAL); 178 } 179 180 zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); 181 if (zpoolhdl != NULL) { 182 uint32_t *var; 183 var = dlsym(zpoolhdl, varname); 184 if (var == NULL) { 185 fprintf(stderr, "Global variable '%s' does not exist " 186 "in libzpool.so\n", varname); 187 return (EINVAL); 188 } 189 *var = (uint32_t)val; 190 191 dlclose(zpoolhdl); 192 } else { 193 fprintf(stderr, "Failed to open libzpool.so to set global " 194 "variable\n"); 195 return (EIO); 196 } 197 198 return (0); 199 } 200