tools/pvscan.c

   1 /*
   2  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   3  * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
   4  *
   5  * This file is part of LVM2.
   6  *
   7  * This copyrighted material is made available to anyone wishing to use,
   8  * modify, copy, or redistribute it subject to the terms and conditions
   9  * of the GNU Lesser General Public License v.2.1.
  10  *
  11  * You should have received a copy of the GNU Lesser General Public License
  12  * along with this program; if not, write to the Free Software Foundation,
  13  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  14  */
  15
  16 #include "tools.h"
  17
  18 #include "lvmetad.h"
  19 #include "lvmcache.h"
  20
  21 int pv_max_name_len = 0;
  22 int vg_max_name_len = 0;
  23
  24 static void _pvscan_display_single(struct cmd_context *cmd,
  25                                    struct physical_volume *pv,
  26                                    void *handle __attribute__((unused)))
  27 {
  28         char uuid[64] __attribute__((aligned(8)));
  29         unsigned vg_name_len = 0;
  30
  31         char pv_tmp_name[NAME_LEN] = { 0, };
  32         char vg_tmp_name[NAME_LEN] = { 0, };
  33         char vg_name_this[NAME_LEN] = { 0, };
  34
  35         /* short listing? */
  36         if (arg_count(cmd, short_ARG) > 0) {
  37                 log_print("%s", pv_dev_name(pv));
  38                 return;
  39         }
  40
  41         if (arg_count(cmd, verbose_ARG) > 1) {
  42                 /* FIXME As per pv_display! Drop through for now. */
  43                 /* pv_show(pv); */
  44
  45                 /* FIXME - Moved to Volume Group structure */
  46                 /* log_print("System Id             %s", pv->vg->system_id); */
  47
  48                 /* log_print(" "); */
  49                 /* return; */
  50         }
  51
  52         memset(pv_tmp_name, 0, sizeof(pv_tmp_name));
  53
  54         vg_name_len = strlen(pv_vg_name(pv)) + 1;
  55
  56         if (arg_count(cmd, uuid_ARG)) {
  57                 if (!id_write_format(&pv->id, uuid, sizeof(uuid))) {
  58                         stack;
  59                         return;
  60                 }
  61
  62                 sprintf(pv_tmp_name, "%-*s with UUID %s",
  63                         pv_max_name_len - 2, pv_dev_name(pv), uuid);
  64         } else {
  65                 sprintf(pv_tmp_name, "%s", pv_dev_name(pv));
  66         }
  67
  68         if (is_orphan(pv)) {
  69                 log_print("PV %-*s    %-*s %s [%s]",
  70                           pv_max_name_len, pv_tmp_name,
  71                           vg_max_name_len, " ",
  72                           pv->fmt ? pv->fmt->name : "    ",
  73                           display_size(cmd, pv_size(pv)));
  74                 return;
  75         }
  76
  77         if (pv_status(pv) & EXPORTED_VG) {
  78                 strncpy(vg_name_this, pv_vg_name(pv), vg_name_len);
  79                 log_print("PV %-*s  is in exported VG %s "
  80                           "[%s / %s free]",
  81                           pv_max_name_len, pv_tmp_name,
  82                           vg_name_this,
  83                           display_size(cmd, (uint64_t) pv_pe_count(pv) *
  84                                        pv_pe_size(pv)),
  85                           display_size(cmd, (uint64_t) (pv_pe_count(pv) -
  86                                                 pv_pe_alloc_count(pv))
  87                                        * pv_pe_size(pv)));
  88                 return;
  89         }
  90
  91         sprintf(vg_tmp_name, "%s", pv_vg_name(pv));
  92         log_print("PV %-*s VG %-*s %s [%s / %s free]", pv_max_name_len,
  93                   pv_tmp_name, vg_max_name_len, vg_tmp_name,
  94                   pv->fmt ? pv->fmt->name : "    ",
  95                   display_size(cmd, (uint64_t) pv_pe_count(pv) *
  96                                                pv_pe_size(pv)),
  97                   display_size(cmd, (uint64_t) (pv_pe_count(pv) -
  98                                                 pv_pe_alloc_count(pv)) *
  99                                            pv_pe_size(pv)));
 100 }
 101
 102 int pvscan(struct cmd_context *cmd, int argc, char **argv)
 103 {
 104         int new_pvs_found = 0;
 105         int pvs_found = 0;
 106
 107         struct dm_list *pvslist;
 108         struct pv_list *pvl;
 109         struct physical_volume *pv;
 110
 111         uint64_t size_total = 0;
 112         uint64_t size_new = 0;
 113
 114         int len = 0;
 115         pv_max_name_len = 0;
 116         vg_max_name_len = 0;
 117
 118         if (arg_count(cmd, lvmetad_ARG)) {
 119                 if (!pvscan_lvmetad(cmd, argc, argv))
 120                         return ECMD_FAILED;
 121                 return ECMD_PROCESSED;
 122         }
 123
 124         if (arg_count(cmd, novolumegroup_ARG) && arg_count(cmd, exported_ARG)) {
 125                 log_error("Options -e and -n are incompatible");
 126                 return EINVALID_CMD_LINE;
 127         }
 128
 129         if (arg_count(cmd, exported_ARG) || arg_count(cmd, novolumegroup_ARG))
 130                 log_warn("WARNING: only considering physical volumes %s",
 131                           arg_count(cmd, exported_ARG) ?
 132                           "of exported volume group(s)" : "in no volume group");
 133
 134         if (!lock_vol(cmd, VG_GLOBAL, LCK_VG_WRITE)) {
 135                 log_error("Unable to obtain global lock.");
 136                 return ECMD_FAILED;
 137         }
 138
 139         persistent_filter_wipe(cmd->filter);
 140         lvmcache_destroy(cmd, 1);
 141
 142         log_verbose("Walking through all physical volumes");
 143         if (!(pvslist = get_pvs(cmd))) {
 144                 unlock_vg(cmd, VG_GLOBAL);
 145                 stack;
 146                 return ECMD_FAILED;
 147         }
 148
 149         /* eliminate exported/new if required */
 150         dm_list_iterate_items(pvl, pvslist) {
 151                 pv = pvl->pv;
 152
 153                 if ((arg_count(cmd, exported_ARG)
 154                      && !(pv_status(pv) & EXPORTED_VG))
 155                     || (arg_count(cmd, novolumegroup_ARG) && (!is_orphan(pv)))) {
 156                         dm_list_del(&pvl->list);
 157                         continue;
 158                 }
 159
 160                 /* Also check for MD use? */
 161 /*******
 162                 if (MAJOR(pv_create_kdev_t(pv[p]->pv_name)) != MD_MAJOR) {
 163                         log_warn
 164                             ("WARNING: physical volume \"%s\" belongs to a meta device",
 165                              pv[p]->pv_name);
 166                 }
 167                 if (MAJOR(pv[p]->pv_dev) != MD_MAJOR)
 168                         continue;
 169 ********/
 170                 pvs_found++;
 171
 172                 if (is_orphan(pv)) {
 173                         new_pvs_found++;
 174                         size_new += pv_size(pv);
 175                         size_total += pv_size(pv);
 176                 } else
 177                         size_total += (uint64_t) pv_pe_count(pv) * pv_pe_size(pv);
 178         }
 179
 180         /* find maximum pv name length */
 181         pv_max_name_len = vg_max_name_len = 0;
 182         dm_list_iterate_items(pvl, pvslist) {
 183                 pv = pvl->pv;
 184                 len = strlen(pv_dev_name(pv));
 185                 if (pv_max_name_len < len)
 186                         pv_max_name_len = len;
 187                 len = strlen(pv_vg_name(pv));
 188                 if (vg_max_name_len < len)
 189                         vg_max_name_len = len;
 190         }
 191         pv_max_name_len += 2;
 192         vg_max_name_len += 2;
 193
 194         dm_list_iterate_items(pvl, pvslist) {
 195                 _pvscan_display_single(cmd, pvl->pv, NULL);
 196                 free_pv_fid(pvl->pv);
 197         }
 198
 199         if (!pvs_found) {
 200                 log_print("No matching physical volumes found");
 201                 unlock_vg(cmd, VG_GLOBAL);
 202                 return ECMD_PROCESSED;
 203         }
 204
 205         log_print("Total: %d [%s] / in use: %d [%s] / in no VG: %d [%s]",
 206                   pvs_found,
 207                   display_size(cmd, size_total),
 208                   pvs_found - new_pvs_found,
 209                   display_size(cmd, (size_total - size_new)),
 210                   new_pvs_found, display_size(cmd, size_new));
 211
 212         unlock_vg(cmd, VG_GLOBAL);
 213
 214         return ECMD_PROCESSED;
 215 }