external/gpl2/lvm2/dist/tools/lvscan.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   5  * Copyright (C) 2004-2006 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 static int lvscan_single(struct cmd_context *cmd, struct logical_volume *lv,
  21                          void *handle __attribute((unused)))
  22 {
  23         struct lvinfo info;
  24         int lv_total = 0;
  25         uint64_t lv_capacity_total = 0;
  26         int inkernel, snap_active = 1;
  27         struct lv_segment *snap_seg = NULL;
  28         float snap_percent;     /* fused, fsize; */
  29         percent_range_t percent_range;
  30
  31         const char *active_str, *snapshot_str;
  32
  33         if (!arg_count(cmd, all_ARG) && !lv_is_visible(lv))
  34                 return ECMD_PROCESSED;
  35
  36         inkernel = lv_info(cmd, lv, &info, 1, 0) && info.exists;
  37         if (lv_is_origin(lv)) {
  38                 dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs,
  39                                        origin_list) {
  40                         if (inkernel &&
  41                             (snap_active = lv_snapshot_percent(snap_seg->cow,
  42                                                                &snap_percent,
  43                                                                &percent_range)))
  44                                 if (percent_range == PERCENT_INVALID)
  45                                         snap_active = 0;
  46                 }
  47                 snap_seg = NULL;
  48         } else if (lv_is_cow(lv)) {
  49                 if (inkernel &&
  50                     (snap_active = lv_snapshot_percent(lv, &snap_percent,
  51                                                        &percent_range)))
  52                         if (percent_range == PERCENT_INVALID)
  53                                 snap_active = 0;
  54         }
  55
  56 /* FIXME Add -D arg to skip this! */
  57         if (inkernel && snap_active)
  58                 active_str = "ACTIVE   ";
  59         else
  60                 active_str = "inactive ";
  61
  62         if (lv_is_origin(lv))
  63                 snapshot_str = "Original";
  64         else if (lv_is_cow(lv))
  65                 snapshot_str = "Snapshot";
  66         else
  67                 snapshot_str = "        ";
  68
  69         log_print("%s%s '%s%s/%s' [%s] %s", active_str, snapshot_str,
  70                   cmd->dev_dir, lv->vg->name, lv->name,
  71                   display_size(cmd, lv->size),
  72                   get_alloc_string(lv->alloc));
  73
  74         lv_total++;
  75
  76         lv_capacity_total += lv->size;
  77
  78         return ECMD_PROCESSED;
  79 }
  80
  81 int lvscan(struct cmd_context *cmd, int argc, char **argv)
  82 {
  83         if (argc) {
  84                 log_error("No additional command line arguments allowed");
  85                 return EINVALID_CMD_LINE;
  86         }
  87
  88         return process_each_lv(cmd, argc, argv, 0, NULL,
  89                                &lvscan_single);
  90 }