cddl/contrib/opensolaris/lib/libzpool/common/util.c

   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
  39 static void
  40 show_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
 112 void
 113 show_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 }