contrib/lvm2/dist/tools/pvscan.c

   1 /*      $NetBSD: pvscan.c,v 1.1.1.2 2009/12/02 00:25:54 haad Exp $      */
   2
   3 /*
   4  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   5  * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
   6  *
   7  * This file is part of LVM2.
   8  *
   9  * This copyrighted material is made available to anyone wishing to use,
  10  * modify, copy, or redistribute it subject to the terms and conditions
  11  * of the GNU Lesser General Public License v.2.1.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #include "tools.h"
  19
  20 int pv_max_name_len = 0;
  21 int vg_max_name_len = 0;
  22
  23 static void _pvscan_display_single(struct cmd_context *cmd,
  24                                    struct physical_volume *pv,
  25                                    void *handle __attribute((unused)))
  26 {
  27         char uuid[64] __attribute((aligned(8)));
  28         unsigned vg_name_len = 0;
  29
  30         char pv_tmp_name[NAME_LEN] = { 0, };
  31         char vg_tmp_name[NAME_LEN] = { 0, };
  32         char vg_name_this[NAME_LEN] = { 0, };
  33
  34         /* short listing? */
  35         if (arg_count(cmd, short_ARG) > 0) {
  36                 log_print("%s", pv_dev_name(pv));
  37                 return;
  38         }
  39
  40         if (arg_count(cmd, verbose_ARG) > 1) {
  41                 /* FIXME As per pv_display! Drop through for now. */
  42                 /* pv_show(pv); */
  43
  44                 /* FIXME - Moved to Volume Group structure */
  45                 /* log_print("System Id             %s", pv->vg->system_id); */
  46
  47                 /* log_print(" "); */
  48                 /* return; */
  49         }
  50
  51         memset(pv_tmp_name, 0, sizeof(pv_tmp_name));
  52
  53         vg_name_len = strlen(pv_vg_name(pv)) + 1;
  54
  55         if (arg_count(cmd, uuid_ARG)) {
  56                 if (!id_write_format(&pv->id, uuid, sizeof(uuid))) {
  57                         stack;
  58                         return;
  59                 }
  60
  61                 sprintf(pv_tmp_name, "%-*s with UUID %s",
  62                         pv_max_name_len - 2, pv_dev_name(pv), uuid);
  63         } else {
  64                 sprintf(pv_tmp_name, "%s", pv_dev_name(pv));
  65         }
  66
  67         if (is_orphan(pv)) {
  68                 log_print("PV %-*s    %-*s %s [%s]",
  69                           pv_max_name_len, pv_tmp_name,
  70                           vg_max_name_len, " ",
  71                           pv->fmt ? pv->fmt->name : "    ",
  72                           display_size(cmd, pv_size(pv)));
  73                 return;
  74         }
  75
  76         if (pv_status(pv) & EXPORTED_VG) {
  77                 strncpy(vg_name_this, pv_vg_name(pv), vg_name_len);
  78                 log_print("PV %-*s  is in exported VG %s "
  79                           "[%s / %s free]",
  80                           pv_max_name_len, pv_tmp_name,
  81                           vg_name_this,
  82                           display_size(cmd, (uint64_t) pv_pe_count(pv) *
  83                                        pv_pe_size(pv)),
  84                           display_size(cmd, (uint64_t) (pv_pe_count(pv) -
  85                                                 pv_pe_alloc_count(pv))
  86                                        * pv_pe_size(pv)));
  87                 return;
  88         }
  89
  90         sprintf(vg_tmp_name, "%s", pv_vg_name(pv));
  91         log_print("PV %-*s VG %-*s %s [%s / %s free]", pv_max_name_len,
  92                   pv_tmp_name, vg_max_name_len, vg_tmp_name,
  93                   pv->fmt ? pv->fmt->name : "    ",
  94                   display_size(cmd, (uint64_t) pv_pe_count(pv) *
  95                                                pv_pe_size(pv)),
  96                   display_size(cmd, (uint64_t) (pv_pe_count(pv) -
  97                                                 pv_pe_alloc_count(pv)) *
  98                                            pv_pe_size(pv)));
  99         return;
 100 }
 101
 102 int pvscan(struct cmd_context *cmd, int argc __attribute((unused)),
 103            char **argv __attribute((unused)))
 104 {
 105         int new_pvs_found = 0;
 106         int pvs_found = 0;
 107
 108         struct dm_list *pvslist;
 109         struct pv_list *pvl;
 110         struct physical_volume *pv;
 111
 112         uint64_t size_total = 0;
 113         uint64_t size_new = 0;
 114
 115         int len = 0;
 116         pv_max_name_len = 0;
 117         vg_max_name_len = 0;
 118
 119         if (arg_count(cmd, novolumegroup_ARG) && arg_count(cmd, exported_ARG)) {
 120                 log_error("Options -e and -n are incompatible");
 121                 return EINVALID_CMD_LINE;
 122         }
 123
 124         if (arg_count(cmd, exported_ARG) || arg_count(cmd, novolumegroup_ARG))
 125                 log_warn("WARNING: only considering physical volumes %s",
 126                           arg_count(cmd, exported_ARG) ?
 127                           "of exported volume group(s)" : "in no volume group");
 128
 129         if (!lock_vol(cmd, VG_GLOBAL, LCK_VG_WRITE)) {
 130                 log_error("Unable to obtain global lock.");
 131                 return ECMD_FAILED;
 132         }
 133
 134         persistent_filter_wipe(cmd->filter);
 135         lvmcache_destroy(cmd, 1);
 136
 137         log_verbose("Walking through all physical volumes");
 138         if (!(pvslist = get_pvs(cmd))) {
 139                 unlock_vg(cmd, VG_GLOBAL);
 140                 stack;
 141                 return ECMD_FAILED;
 142         }
 143
 144         /* eliminate exported/new if required */
 145         dm_list_iterate_items(pvl, pvslist) {
 146                 pv = pvl->pv;
 147
 148                 if ((arg_count(cmd, exported_ARG)
 149                      && !(pv_status(pv) & EXPORTED_VG))
 150                     || (arg_count(cmd, novolumegroup_ARG) && (!is_orphan(pv)))) {
 151                         dm_list_del(&pvl->list);
 152                         continue;
 153                 }
 154
 155                 /* Also check for MD use? */
 156 /*******
 157                 if (MAJOR(pv_create_kdev_t(pv[p]->pv_name)) != MD_MAJOR) {
 158                         log_print
 159                             ("WARNING: physical volume \"%s\" belongs to a meta device",
 160                              pv[p]->pv_name);
 161                 }
 162                 if (MAJOR(pv[p]->pv_dev) != MD_MAJOR)
 163                         continue;
 164 ********/
 165                 pvs_found++;
 166
 167                 if (is_orphan(pv)) {
 168                         new_pvs_found++;
 169                         size_new += pv_size(pv);
 170                         size_total += pv_size(pv);
 171                 } else
 172                         size_total += pv_pe_count(pv) * pv_pe_size(pv);
 173         }
 174
 175         /* find maximum pv name length */
 176         pv_max_name_len = vg_max_name_len = 0;
 177         dm_list_iterate_items(pvl, pvslist) {
 178                 pv = pvl->pv;
 179                 len = strlen(pv_dev_name(pv));
 180                 if (pv_max_name_len < len)
 181                         pv_max_name_len = len;
 182                 len = strlen(pv_vg_name(pv));
 183                 if (vg_max_name_len < len)
 184                         vg_max_name_len = len;
 185         }
 186         pv_max_name_len += 2;
 187         vg_max_name_len += 2;
 188
 189         dm_list_iterate_items(pvl, pvslist)
 190             _pvscan_display_single(cmd, pvl->pv, NULL);
 191
 192         if (!pvs_found) {
 193                 log_print("No matching physical volumes found");
 194                 unlock_vg(cmd, VG_GLOBAL);
 195                 return ECMD_PROCESSED;
 196         }
 197
 198         log_print("Total: %d [%s] / in use: %d [%s] / in no VG: %d [%s]",
 199                   pvs_found,
 200                   display_size(cmd, size_total),
 201                   pvs_found - new_pvs_found,
 202                   display_size(cmd, (size_total - size_new)),
 203                   new_pvs_found, display_size(cmd, size_new));
 204
 205         unlock_vg(cmd, VG_GLOBAL);
 206
 207         return ECMD_PROCESSED;
 208 }