1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016 by Delphix. All rights reserved.
* Copyright 2017 Jason King
* Copyright (c) 2017, Intel Corporation.
*/
#include <assert.h>
#include <sys/zfs_context.h>
#include <sys/avl.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/spa.h>
#include <sys/fs/zfs.h>
#include <sys/refcount.h>
#include <sys/zfs_ioctl.h>
#include <dlfcn.h>
#include <libzutil.h>
/*
* Routines needed by more than one client of libzpool.
*/
static void
show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent)
{
vdev_stat_t *vs;
vdev_stat_t *v0 = { 0 };
uint64_t sec;
uint64_t is_log = 0;
nvlist_t **child;
uint_t c, children;
char used[6], avail[6];
char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6];
v0 = umem_zalloc(sizeof (*v0), UMEM_NOFAIL);
if (indent == 0 && desc != NULL) {
(void) printf(" "
" capacity operations bandwidth ---- errors ----\n");
(void) printf("description "
"used avail read write read write read write cksum\n");
}
if (desc != NULL) {
char *suffix = "", *bias = NULL;
char bias_suffix[32];
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log);
(void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS,
&bias);
if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
(uint64_t **)&vs, &c) != 0)
vs = v0;
if (bias != NULL) {
(void) snprintf(bias_suffix, sizeof (bias_suffix),
" (%s)", bias);
suffix = bias_suffix;
} else if (is_log) {
suffix = " (log)";
}
sec = MAX(1, vs->vs_timestamp / NANOSEC);
nicenum(vs->vs_alloc, used, sizeof (used));
nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail));
nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops));
nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops));
nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes,
sizeof (rbytes));
nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes,
sizeof (wbytes));
nicenum(vs->vs_read_errors, rerr, sizeof (rerr));
nicenum(vs->vs_write_errors, werr, sizeof (werr));
nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr));
(void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n",
indent, "",
desc,
(int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)),
suffix,
vs->vs_space ? 6 : 0, vs->vs_space ? used : "",
vs->vs_space ? 6 : 0, vs->vs_space ? avail : "",
rops, wops, rbytes, wbytes, rerr, werr, cerr);
}
umem_free(v0, sizeof (*v0));
if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0)
return;
for (c = 0; c < children; c++) {
nvlist_t *cnv = child[c];
char *cname = NULL, *tname;
uint64_t np;
int len;
if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) &&
nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname))
cname = "<unknown>";
len = strlen(cname) + 2;
tname = umem_zalloc(len, UMEM_NOFAIL);
(void) strlcpy(tname, cname, len);
if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0)
tname[strlen(tname)] = '0' + np;
show_vdev_stats(tname, ctype, cnv, indent + 2);
umem_free(tname, len);
}
}
void
show_pool_stats(spa_t *spa)
{
nvlist_t *config, *nvroot;
char *name;
VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0);
VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
&nvroot) == 0);
VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
&name) == 0);
show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0);
show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0);
show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0);
nvlist_free(config);
}
/*
* Sets given global variable in libzpool to given unsigned 32-bit value.
* arg: "<variable>=<value>"
*/
int
set_global_var(char *arg)
{
void *zpoolhdl;
char *varname = arg, *varval;
u_longlong_t val;
#ifndef _LITTLE_ENDIAN
/*
* On big endian systems changing a 64-bit variable would set the high
* 32 bits instead of the low 32 bits, which could cause unexpected
* results.
*/
fprintf(stderr, "Setting global variables is only supported on "
"little-endian systems\n");
return (ENOTSUP);
#endif
if (arg != NULL && (varval = strchr(arg, '=')) != NULL) {
*varval = '\0';
varval++;
val = strtoull(varval, NULL, 0);
if (val > UINT32_MAX) {
fprintf(stderr, "Value for global variable '%s' must "
"be a 32-bit unsigned integer\n", varname);
return (EOVERFLOW);
}
} else {
return (EINVAL);
}
zpoolhdl = dlopen("libzpool.so", RTLD_LAZY);
if (zpoolhdl != NULL) {
uint32_t *var;
var = dlsym(zpoolhdl, varname);
if (var == NULL) {
fprintf(stderr, "Global variable '%s' does not exist "
"in libzpool.so\n", varname);
return (EINVAL);
}
*var = (uint32_t)val;
dlclose(zpoolhdl);
} else {
fprintf(stderr, "Failed to open libzpool.so to set global "
"variable\n");
return (EIO);
}
return (0);
}
static nvlist_t *
refresh_config(void *unused, nvlist_t *tryconfig)
{
return (spa_tryimport(tryconfig));
}
static int
pool_active(void *unused, const char *name, uint64_t guid,
boolean_t *isactive)
{
zfs_cmd_t *zcp;
nvlist_t *innvl;
char *packed = NULL;
size_t size = 0;
int fd, ret;
/*
* Use ZFS_IOC_POOL_SYNC to confirm if a pool is active
*/
fd = open("/dev/zfs", O_RDWR);
if (fd < 0)
return (-1);
zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL);
innvl = fnvlist_alloc();
fnvlist_add_boolean_value(innvl, "force", B_FALSE);
(void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name));
packed = fnvlist_pack(innvl, &size);
zcp->zc_nvlist_src = (uint64_t)(uintptr_t)packed;
zcp->zc_nvlist_src_size = size;
ret = ioctl(fd, ZFS_IOC_POOL_SYNC, zcp);
fnvlist_pack_free(packed, size);
free((void *)(uintptr_t)zcp->zc_nvlist_dst);
nvlist_free(innvl);
umem_free(zcp, sizeof (zfs_cmd_t));
(void) close(fd);
*isactive = (ret == 0);
return (0);
}
const pool_config_ops_t libzpool_config_ops = {
.pco_refresh_config = refresh_config,
.pco_pool_active = pool_active,
};
|
