util.c revision 325915 
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 */
24
25#include <assert.h>
26#include <sys/zfs_context.h>
27#include <sys/avl.h>
28#include <string.h>
29#include <stdio.h>
30#include <stdlib.h>
31#include <sys/spa.h>
32#include <sys/fs/zfs.h>
33#include <sys/refcount.h>
34
35/*
36 * Routines needed by more than one client of libzpool.
37 */
38
39static void
40show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent)
41{
42	vdev_stat_t *vs;
43	vdev_stat_t v0 = { 0 };
44	uint64_t sec;
45	uint64_t is_log = 0;
46	nvlist_t **child;
47	uint_t c, children;
48	char used[6], avail[6];
49	char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6];
50	char *prefix = "";
51
52	if (indent == 0 && desc != NULL) {
53		(void) printf("                           "
54		    " capacity   operations   bandwidth  ---- errors ----\n");
55		(void) printf("description                "
56		    "used avail  read write  read write  read write cksum\n");
57	}
58
59	if (desc != NULL) {
60		(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log);
61
62		if (is_log)
63			prefix = "log ";
64
65		if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
66		    (uint64_t **)&vs, &c) != 0)
67			vs = &v0;
68
69		sec = MAX(1, vs->vs_timestamp / NANOSEC);
70
71		nicenum(vs->vs_alloc, used, sizeof (used));
72		nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail));
73		nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops));
74		nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops));
75		nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes,
76		    sizeof (rbytes));
77		nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes,
78		    sizeof (wbytes));
79		nicenum(vs->vs_read_errors, rerr, sizeof (rerr));
80		nicenum(vs->vs_write_errors, werr, sizeof (werr));
81		nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr));
82
83		(void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n",
84		    indent, "",
85		    prefix,
86		    (int)(indent + strlen(prefix) - 25 - (vs->vs_space ? 0 : 12)),
87		    desc,
88		    vs->vs_space ? 6 : 0, vs->vs_space ? used : "",
89		    vs->vs_space ? 6 : 0, vs->vs_space ? avail : "",
90		    rops, wops, rbytes, wbytes, rerr, werr, cerr);
91	}
92
93	if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0)
94		return;
95
96	for (c = 0; c < children; c++) {
97		nvlist_t *cnv = child[c];
98		char *cname, *tname;
99		uint64_t np;
100		if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) &&
101		    nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname))
102			cname = "<unknown>";
103		tname = calloc(1, strlen(cname) + 2);
104		(void) strcpy(tname, cname);
105		if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0)
106			tname[strlen(tname)] = '0' + np;
107		show_vdev_stats(tname, ctype, cnv, indent + 2);
108		free(tname);
109	}
110}
111
112void
113show_pool_stats(spa_t *spa)
114{
115	nvlist_t *config, *nvroot;
116	char *name;
117
118	VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0);
119
120	VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
121	    &nvroot) == 0);
122	VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
123	    &name) == 0);
124
125	show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0);
126	show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0);
127	show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0);
128
129	nvlist_free(config);
130}
131