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