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 (c) 2017, Intel Corporation. 25 */ 26 27#include <assert.h> 28#include <sys/zfs_context.h> 29#include <sys/avl.h> 30#include <string.h> 31#include <stdio.h> 32#include <stdlib.h> 33#include <sys/spa.h> 34#include <sys/fs/zfs.h> 35#include <sys/refcount.h> 36#include <dlfcn.h> 37 38/* 39 * Routines needed by more than one client of libzpool. 40 */ 41 42static void 43show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) 44{ 45 vdev_stat_t *vs; 46 vdev_stat_t v0 = { 0 }; 47 uint64_t sec; 48 uint64_t is_log = 0; 49 nvlist_t **child; 50 uint_t c, children; 51 char used[6], avail[6]; 52 char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; 53 54 if (indent == 0 && desc != NULL) { 55 (void) printf(" " 56 " capacity operations bandwidth ---- errors ----\n"); 57 (void) printf("description " 58 "used avail read write read write read write cksum\n"); 59 } 60 61 if (desc != NULL) { 62 char *suffix = "", *bias = NULL; 63 char bias_suffix[32]; 64 65 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); 66 (void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, 67 &bias); 68 if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 69 (uint64_t **)&vs, &c) != 0) 70 vs = &v0; 71 72 if (bias != NULL) { 73 (void) snprintf(bias_suffix, sizeof (bias_suffix), 74 " (%s)", bias); 75 suffix = bias_suffix; 76 } else if (is_log) { 77 suffix = " (log)"; 78 } 79 80 sec = MAX(1, vs->vs_timestamp / NANOSEC); 81 82 nicenum(vs->vs_alloc, used, sizeof (used)); 83 nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail)); 84 nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops)); 85 nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops)); 86 nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes, 87 sizeof (rbytes)); 88 nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes, 89 sizeof (wbytes)); 90 nicenum(vs->vs_read_errors, rerr, sizeof (rerr)); 91 nicenum(vs->vs_write_errors, werr, sizeof (werr)); 92 nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr)); 93 94 (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", 95 indent, "", 96 desc, 97 (int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)), 98 suffix, 99 vs->vs_space ? 6 : 0, vs->vs_space ? used : "", 100 vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", 101 rops, wops, rbytes, wbytes, rerr, werr, cerr); 102 } 103 104 if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) 105 return; 106 107 for (c = 0; c < children; c++) { 108 nvlist_t *cnv = child[c]; 109 char *cname, *tname; 110 uint64_t np; 111 if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && 112 nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) 113 cname = "<unknown>"; 114 tname = calloc(1, strlen(cname) + 2); 115 (void) strcpy(tname, cname); 116 if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) 117 tname[strlen(tname)] = '0' + np; 118 show_vdev_stats(tname, ctype, cnv, indent + 2); 119 free(tname); 120 } 121} 122 123void 124show_pool_stats(spa_t *spa) 125{ 126 nvlist_t *config, *nvroot; 127 char *name; 128 129 VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); 130 131 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 132 &nvroot) == 0); 133 VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 134 &name) == 0); 135 136 show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); 137 show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); 138 show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); 139 140 nvlist_free(config); 141} 142 143/* 144 * Sets given global variable in libzpool to given unsigned 32-bit value. 145 * arg: "<variable>=<value>" 146 */ 147int 148set_global_var(char *arg) 149{ 150 void *zpoolhdl; 151 char *varname = arg, *varval; 152 u_longlong_t val; 153 154#ifndef _LITTLE_ENDIAN 155 /* 156 * On big endian systems changing a 64-bit variable would set the high 157 * 32 bits instead of the low 32 bits, which could cause unexpected 158 * results. 159 */ 160 fprintf(stderr, "Setting global variables is only supported on " 161 "little-endian systems\n", varname); 162 return (ENOTSUP); 163#endif 164 if ((varval = strchr(arg, '=')) != NULL) { 165 *varval = '\0'; 166 varval++; 167 val = strtoull(varval, NULL, 0); 168 if (val > UINT32_MAX) { 169 fprintf(stderr, "Value for global variable '%s' must " 170 "be a 32-bit unsigned integer\n", varname); 171 return (EOVERFLOW); 172 } 173 } else { 174 return (EINVAL); 175 } 176 177 zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); 178 if (zpoolhdl != NULL) { 179 uint32_t *var; 180 var = dlsym(zpoolhdl, varname); 181 if (var == NULL) { 182 fprintf(stderr, "Global variable '%s' does not exist " 183 "in libzpool.so\n", varname); 184 return (EINVAL); 185 } 186 *var = (uint32_t)val; 187 188 dlclose(zpoolhdl); 189 } else { 190 fprintf(stderr, "Failed to open libzpool.so to set global " 191 "variable\n"); 192 return (EIO); 193 } 194 195 return (0); 196} 197