tools/vgimport.c

   1 /*
   2  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   3  * Copyright (C) 2004-2009 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  14  */
  15
  16 #include "tools.h"
  17 #include "lib/label/hints.h"
  18
  19 static int _vgimport_single(struct cmd_context *cmd,
  20                             const char *vg_name,
  21                             struct volume_group *vg,
  22                             struct processing_handle *handle __attribute__((unused)))
  23 {
  24         struct pv_list *pvl;
  25         struct physical_volume *pv;
  26
  27         if (!vg_is_exported(vg)) {
  28                 log_error("Volume group \"%s\" is not exported", vg_name);
  29                 goto bad;
  30         }
  31
  32         if (vg_status(vg) & PARTIAL_VG) {
  33                 log_error("Volume group \"%s\" is partially missing", vg_name);
  34                 goto bad;
  35         }
  36
  37         vg->status &= ~EXPORTED_VG;
  38
  39         if (!vg_is_shared(vg))
  40                 vg->system_id = cmd->system_id ? dm_pool_strdup(vg->vgmem, cmd->system_id) : NULL;
  41
  42         dm_list_iterate_items(pvl, &vg->pvs) {
  43                 pv = pvl->pv;
  44                 pv->status &= ~EXPORTED_VG;
  45         }
  46
  47         if (!vg_write(vg) || !vg_commit(vg))
  48                 goto_bad;
  49
  50         log_print_unless_silent("Volume group \"%s\" successfully imported", vg->name);
  51
  52         /*
  53          * This is not necessary for any normal, known cases, but it could be
  54          * associated with some unconventional method of sharing disks.  Hints
  55          * should be disabled when sharing disks, but this might help.
  56          */
  57         invalidate_hints(cmd);
  58
  59         return ECMD_PROCESSED;
  60
  61 bad:
  62         return ECMD_FAILED;
  63 }
  64
  65 int vgimport(struct cmd_context *cmd, int argc, char **argv)
  66 {
  67         if (!argc && !arg_is_set(cmd, all_ARG) && !arg_is_set(cmd, select_ARG)) {
  68                 log_error("Please supply volume groups or -S for selection or use -a for all.");
  69                 return EINVALID_CMD_LINE;
  70         }
  71
  72         if (arg_is_set(cmd, all_ARG) && (argc || arg_is_set(cmd, select_ARG))) {
  73                 log_error("No arguments permitted when using -a for all.");
  74                 return EINVALID_CMD_LINE;
  75         }
  76
  77         if (arg_is_set(cmd, force_ARG)) {
  78                 /*
  79                  * The volume group cannot be repaired unless it is first
  80                  * imported.  If we don't allow the user a way to import the
  81                  * VG while it is 'partial', then we will have created a
  82                  * circular dependency.
  83                  *
  84                  * The reason we don't just simply set 'handles_missing_pvs'
  85                  * by default is that we want to guard against the case
  86                  * where the user simply forgot to move one or more disks in
  87                  * the VG before running 'vgimport'.
  88                  */
  89                 log_warn("WARNING: Volume groups with missing PVs will be imported with --force.");
  90                 cmd->handles_missing_pvs = 1;
  91         }
  92
  93         return process_each_vg(cmd, argc, argv, NULL, NULL, READ_FOR_UPDATE,
  94                                0, NULL, &_vgimport_single);
  95 }