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