diff options
Diffstat (limited to 'tools/vgcfgrestore.c')
| -rw-r--r-- | tools/vgcfgrestore.c | 137 |
1 files changed, 109 insertions, 28 deletions
diff --git a/tools/vgcfgrestore.c b/tools/vgcfgrestore.c index d62df99..9fcba89 100644 --- a/tools/vgcfgrestore.c +++ b/tools/vgcfgrestore.c @@ -1,6 +1,6 @@ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. - * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2018 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * @@ -10,69 +10,150 @@ * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "tools.h" +#include "device_mapper/all.h" +#include "device_mapper/misc/dm-ioctl.h" + +/* + * Check if there are any active volumes from restored vg_name. + * We can prompt user, as such operation may make some serious + * troubles later, when user will try to continue such devices. + */ +static int _check_all_dm_devices(const char *vg_name, unsigned *found) +{ + struct dm_task *dmt; + struct dm_names *names; + char vgname_buf[DM_NAME_LEN * 2]; + char *vgname, *lvname, *lvlayer; + unsigned next = 0; + int r = 1; + + if (!(dmt = dm_task_create(DM_DEVICE_LIST))) + return_0; + + if (!dm_task_run(dmt)) { + r = 0; + goto_out; + } + + if (!(names = dm_task_get_names(dmt))) { + r = 0; + goto_out; + } + + if (!names->dev) { + log_verbose("No devices found."); + goto out; + } + + do { + /* TODO: Do we want to validate UUID LVM- prefix as well ? */ + names = (struct dm_names *)((char *) names + next); + if (!dm_strncpy(vgname_buf, names->name, sizeof(vgname_buf))) { + r = 0; + goto_out; + } + vgname = vgname_buf; + if (!dm_split_lvm_name(NULL, NULL, &vgname, &lvname, &lvlayer)) { + r = 0; + goto_out; + } + if (strcmp(vgname, vg_name) == 0) { + log_print("Volume group %s has active volume: %s.", vgname, lvname); + (*found)++; + } + next = names->next; + } while (next); + +out: + dm_task_destroy(dmt); + return r; +} int vgcfgrestore(struct cmd_context *cmd, int argc, char **argv) { const char *vg_name = NULL; + unsigned found = 0; + int ret; if (argc == 1) { vg_name = skip_dev_dir(cmd, argv[0], NULL); if (!validate_name(vg_name)) { - log_error("Volume group name \"%s\" is invalid", vg_name); - return ECMD_FAILED; + log_error("Volume group name \"%s\" is invalid.", vg_name); + return EINVALID_CMD_LINE; } - } else if (!(arg_count(cmd, list_ARG) && arg_count(cmd, file_ARG))) { + } else if (!(arg_is_set(cmd, list_ARG) && arg_is_set(cmd, file_ARG))) { log_error("Please specify a *single* volume group to restore."); - return ECMD_FAILED; + return EINVALID_CMD_LINE; } /* * FIXME: overloading the -l arg for now to display a * list of archive files for a particular vg */ - if (arg_count(cmd, list_ARG)) { - if (!(arg_count(cmd,file_ARG) ? + if (arg_is_set(cmd, list_ARG)) { + if (!(arg_is_set(cmd,file_ARG) ? archive_display_file(cmd, arg_str_value(cmd, file_ARG, "")) : - archive_display(cmd, vg_name))) { - stack; + archive_display(cmd, vg_name))) + return_ECMD_FAILED; + + return ECMD_PROCESSED; + } + + if (!vg_name) { + log_error(INTERNAL_ERROR "VG name is not set."); + return ECMD_FAILED; + } else if (!_check_all_dm_devices(vg_name, &found)) { + log_warn("WARNING: Failed to check for active volumes in volume group \"%s\".", vg_name); + } else if (found) { + log_warn("WARNING: Found %u active volume(s) in volume group \"%s\".", + found, vg_name); + log_print("Restoring VG with active LVs, may cause mismatch with its metadata."); + if (!arg_is_set(cmd, yes_ARG) && + yes_no_prompt("Do you really want to proceed with restore of volume group \"%s\", " + "while %u volume(s) are active? [y/n]: ", + vg_name, found) == 'n') { + log_error("Restore aborted."); return ECMD_FAILED; } - return ECMD_PROCESSED; } - lvmcache_seed_infos_from_lvmetad(cmd); + if (!lock_global(cmd, "ex")) + return ECMD_FAILED; - if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) { - log_error("Unable to lock volume group %s", vg_name); + if (!lock_vol(cmd, vg_name, LCK_VG_WRITE, NULL)) { + log_error("Unable to lock volume group %s.", vg_name); return ECMD_FAILED; } - if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) { - log_error("Unable to lock orphans"); - unlock_vg(cmd, vg_name); - return ECMD_FAILED; + clear_hint_file(cmd); + + if (!lvmcache_label_scan(cmd)) { + unlock_vg(cmd, NULL, vg_name); + return_ECMD_FAILED; } cmd->handles_unknown_segments = 1; - if (!(arg_count(cmd, file_ARG) ? + if (!(arg_is_set(cmd, file_ARG) ? backup_restore_from_file(cmd, vg_name, - arg_str_value(cmd, file_ARG, "")) : - backup_restore(cmd, vg_name))) { - unlock_vg(cmd, VG_ORPHANS); - unlock_vg(cmd, vg_name); + arg_str_value(cmd, file_ARG, ""), + arg_count(cmd, force_long_ARG)) : + backup_restore(cmd, vg_name, arg_count(cmd, force_long_ARG)))) { + unlock_vg(cmd, NULL, vg_name); log_error("Restore failed."); - return ECMD_FAILED; + ret = ECMD_FAILED; + goto out; } - log_print_unless_silent("Restored volume group %s", vg_name); + ret = ECMD_PROCESSED; + log_print_unless_silent("Restored volume group %s.", vg_name); - unlock_vg(cmd, VG_ORPHANS); - unlock_vg(cmd, vg_name); - return ECMD_PROCESSED; + unlock_vg(cmd, NULL, vg_name); +out: + return ret; } |