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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <assert.h> 30 #include <sys/zfs_context.h> 31 #include <sys/avl.h> 32 #include <string.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <sys/spa.h> 36 #include <sys/fs/zfs.h> 37 38 /* 39 * Routines needed by more than one client of libzpool. 40 */ 41 42 void 43 nicenum(uint64_t num, char *buf) 44 { 45 uint64_t n = num; 46 int index = 0; 47 char u; 48 49 while (n >= 1024) { 50 n = (n + (1024 / 2)) / 1024; /* Round up or down */ 51 index++; 52 } 53 54 u = " KMGTPE"[index]; 55 56 if (index == 0) { 57 (void) sprintf(buf, "%llu", (u_longlong_t)n); 58 } else if (n < 10 && (num & (num - 1)) != 0) { 59 (void) sprintf(buf, "%.2f%c", 60 (double)num / (1ULL << 10 * index), u); 61 } else if (n < 100 && (num & (num - 1)) != 0) { 62 (void) sprintf(buf, "%.1f%c", 63 (double)num / (1ULL << 10 * index), u); 64 } else { 65 (void) sprintf(buf, "%llu%c", (u_longlong_t)n, u); 66 } 67 } 68 69 static void 70 show_vdev_stats(const char *desc, nvlist_t *nv, int indent) 71 { 72 nvlist_t **child; 73 uint_t c, children; 74 vdev_stat_t *vs; 75 uint64_t sec; 76 char used[6], avail[6]; 77 char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; 78 79 if (indent == 0) { 80 (void) printf(" " 81 " capacity operations bandwidth ---- errors ----\n"); 82 (void) printf("description " 83 "used avail read write read write read write cksum\n"); 84 } 85 86 VERIFY(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_STATS, 87 (uint64_t **)&vs, &c) == 0); 88 89 sec = MAX(1, vs->vs_timestamp / NANOSEC); 90 91 nicenum(vs->vs_alloc, used); 92 nicenum(vs->vs_space - vs->vs_alloc, avail); 93 nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops); 94 nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops); 95 nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes); 96 nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes); 97 nicenum(vs->vs_read_errors, rerr); 98 nicenum(vs->vs_write_errors, werr); 99 nicenum(vs->vs_checksum_errors, cerr); 100 101 (void) printf("%*s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", 102 indent, "", 103 indent - 19 - (vs->vs_space ? 0 : 12), desc, 104 vs->vs_space ? 6 : 0, vs->vs_space ? used : "", 105 vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", 106 rops, wops, rbytes, wbytes, rerr, werr, cerr); 107 108 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 109 &child, &children) != 0) 110 return; 111 112 for (c = 0; c < children; c++) { 113 nvlist_t *cnv = child[c]; 114 char *cname; 115 if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && 116 nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) 117 cname = "<unknown>"; 118 show_vdev_stats(cname, cnv, indent + 2); 119 } 120 } 121 122 void 123 show_pool_stats(spa_t *spa) 124 { 125 nvlist_t *config = NULL; 126 nvlist_t *nvroot = NULL; 127 128 spa_config_enter(spa, RW_READER); 129 VERIFY(spa_get_stats(spa_name(spa), &config) == 0); 130 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 131 &nvroot) == 0); 132 133 show_vdev_stats(spa_name(spa), nvroot, 0); 134 spa_config_exit(spa); 135 } 136