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 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
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
36/*
37 * Routines needed by more than one client of libzpool.
38 */
39
40void
41nicenum(uint64_t num, char *buf)
42{
43	uint64_t n = num;
44	int index = 0;
45	char u;
46
47	while (n >= 1024) {
48		n = (n + (1024 / 2)) / 1024; /* Round up or down */
49		index++;
50	}
51
52	u = " KMGTPE"[index];
53
54	if (index == 0) {
55		(void) sprintf(buf, "%llu", (u_longlong_t)n);
56	} else if (n < 10 && (num & (num - 1)) != 0) {
57		(void) sprintf(buf, "%.2f%c",
58		    (double)num / (1ULL << 10 * index), u);
59	} else if (n < 100 && (num & (num - 1)) != 0) {
60		(void) sprintf(buf, "%.1f%c",
61		    (double)num / (1ULL << 10 * index), u);
62	} else {
63		(void) sprintf(buf, "%llu%c", (u_longlong_t)n, u);
64	}
65}
66
67static void
68show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent)
69{
70	vdev_stat_t *vs;
71	vdev_stat_t v0 = { 0 };
72	uint64_t sec;
73	uint64_t is_log = 0;
74	nvlist_t **child;
75	uint_t c, children;
76	char used[6], avail[6];
77	char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6];
78	char *prefix = "";
79
80	if (indent == 0 && desc != NULL) {
81		(void) printf("                           "
82		    " capacity   operations   bandwidth  ---- errors ----\n");
83		(void) printf("description                "
84		    "used avail  read write  read write  read write cksum\n");
85	}
86
87	if (desc != NULL) {
88		(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log);
89
90		if (is_log)
91			prefix = "log ";
92
93		if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_STATS,
94		    (uint64_t **)&vs, &c) != 0)
95			vs = &v0;
96
97		sec = MAX(1, vs->vs_timestamp / NANOSEC);
98
99		nicenum(vs->vs_alloc, used);
100		nicenum(vs->vs_space - vs->vs_alloc, avail);
101		nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops);
102		nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops);
103		nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes);
104		nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes);
105		nicenum(vs->vs_read_errors, rerr);
106		nicenum(vs->vs_write_errors, werr);
107		nicenum(vs->vs_checksum_errors, cerr);
108
109		(void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n",
110		    indent, "",
111		    prefix,
112		    indent + strlen(prefix) - 25 - (vs->vs_space ? 0 : 12),
113		    desc,
114		    vs->vs_space ? 6 : 0, vs->vs_space ? used : "",
115		    vs->vs_space ? 6 : 0, vs->vs_space ? avail : "",
116		    rops, wops, rbytes, wbytes, rerr, werr, cerr);
117	}
118
119	if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0)
120		return;
121
122	for (c = 0; c < children; c++) {
123		nvlist_t *cnv = child[c];
124		char *cname, *tname;
125		uint64_t np;
126		if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) &&
127		    nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname))
128			cname = "<unknown>";
129		tname = calloc(1, strlen(cname) + 2);
130		(void) strcpy(tname, cname);
131		if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0)
132			tname[strlen(tname)] = '0' + np;
133		show_vdev_stats(tname, ctype, cnv, indent + 2);
134		free(tname);
135	}
136}
137
138void
139show_pool_stats(spa_t *spa)
140{
141	nvlist_t *config, *nvroot;
142	char *name;
143
144	VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0);
145
146	VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
147	    &nvroot) == 0);
148	VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
149	    &name) == 0);
150
151	show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0);
152	show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0);
153	show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0);
154
155	nvlist_free(config);
156}
157