static int vgexport_single(struct cmd_context *cmd, // __attribute((unused)),
const char *vg_name,
struct volume_group *vg, int consistent,
void *handle) // __attribute((unused)))
{
struct pv_list *pvl;
struct physical_volume *pv;
if (!vg) {
log_error("Unable to find volume group \"%s\"", vg_name);
goto error;
}
if (!consistent) {
log_error("Volume group %s inconsistent", vg_name);
goto error;
}
if (!vg_check_status(vg, EXPORTED_VG | LVM_WRITE)) {
goto error;
}
if (lvs_in_vg_activated(vg)) {
log_error("Volume group \"%s\" has active logical volumes",
vg_name);
goto error;
}
if (!archive(vg))
goto error;
vg->status |= EXPORTED_VG;
list_iterate_items(pvl, struct pv_list, &vg->pvs) {
pv = pvl->pv;
pv->status |= EXPORTED_VG;
}
if (!vg_write(vg) || !vg_commit(vg))
goto error;
backup(vg);
log_print("Volume group \"%s\" successfully exported", vg->name);
return ECMD_PROCESSED;
error:
return ECMD_FAILED;
}
static int _vgrename_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, struct processing_handle *handle)
{
struct vgrename_params *vp = (struct vgrename_params *) handle->custom_handle;
struct lvmcache_vginfo *vginfo;
char old_path[NAME_LEN];
char new_path[NAME_LEN];
struct id id;
const char *name;
char *dev_dir;
/*
* vg_name_old may be a UUID which process_each_vg
* replaced with the real VG name. In that case,
* vp->vg_name_old will be the UUID and vg_name will be
* the actual VG name. Check again if the old and new
* names match, using the real names.
*/
if (vp->old_name_is_uuid && !strcmp(vp->vg_name_new, vg_name)) {
log_error("New VG name must differ from the old VG name.");
return ECMD_FAILED;
}
/*
* Check if a VG already exists with the new VG name.
*
* When not using lvmetad, it's essential that a full scan has
* been done to ensure we see all existing VG names, so we
* do not use an existing name. This has been done by
* process_each_vg REQUIRES_FULL_LABEL_SCAN.
*
* (FIXME: We could look for the new name in the list of all
* VGs that process_each_vg created, but we don't have access
* to that list here, so we have to look in lvmcache.
* This requires populating lvmcache when using lvmetad.)
*/
lvmcache_seed_infos_from_lvmetad(cmd);
if ((vginfo = lvmcache_vginfo_from_vgname(vp->vg_name_new, NULL))) {
log_error("New VG name \"%s\" already exists", vp->vg_name_new);
return ECMD_FAILED;
}
if (id_read_format_try(&id, vp->vg_name_new) &&
(name = lvmcache_vgname_from_vgid(cmd->mem, (const char *)&id))) {
log_error("New VG name \"%s\" matches the UUID of existing VG %s", vp->vg_name_new, name);
return ECMD_FAILED;
}
/*
* Lock the old VG name first:
* . The old VG name has already been locked by process_each_vg.
* . Now lock the new VG name here, second.
*
* Lock the new VG name first:
* . The new VG name has already been pre-locked below,
* before process_each_vg was called.
* . process_each_vg then locked the old VG name second.
* . Nothing to do here.
*
* Special case when the old VG name is a uuid:
* . The old VG's real name wasn't known before process_each_vg,
* so the correct lock ordering wasn't known beforehand,
* so no pre-locking was done.
* . The old VG's real name has been locked by process_each_vg.
* . Now lock the new VG name here, second.
* . Suppress lock ordering checks because the lock order may
* have wanted the new name first, which wasn't possible in
* this uuid-for-name case.
*/
if (vp->lock_vg_old_first || vp->old_name_is_uuid) {
if (vp->old_name_is_uuid)
lvmcache_lock_ordering(0);
if (!_lock_new_vg_for_rename(cmd, vp->vg_name_new))
return ECMD_FAILED;
lvmcache_lock_ordering(1);
}
dev_dir = cmd->dev_dir;
if (!archive(vg))
goto error;
/* Remove references based on old name */
if (!drop_cached_metadata(vg))
stack;
if (!lockd_rename_vg_before(cmd, vg)) {
stack;
goto error;
}
/* Change the volume group name */
vg_rename(cmd, vg, vp->vg_name_new);
/* store it on disks */
log_verbose("Writing out updated volume group");
if (!vg_write(vg) || !vg_commit(vg)) {
goto error;
}
sprintf(old_path, "%s%s", dev_dir, vg_name);
sprintf(new_path, "%s%s", dev_dir, vp->vg_name_new);
if (activation() && dir_exists(old_path)) {
log_verbose("Renaming \"%s\" to \"%s\"", old_path, new_path);
if (test_mode())
log_verbose("Test mode: Skipping rename.");
else if (lvs_in_vg_activated(vg)) {
if (!vg_refresh_visible(cmd, vg)) {
log_error("Renaming \"%s\" to \"%s\" failed",
old_path, new_path);
goto error;
}
}
}
lockd_rename_vg_final(cmd, vg, 1);
if (!backup(vg))
stack;
if (!backup_remove(cmd, vg_name))
stack;
unlock_vg(cmd, vp->vg_name_new);
vp->unlock_new_name = 0;
log_print_unless_silent("Volume group \"%s\" successfully renamed to \"%s\"",
vp->vg_name_old, vp->vg_name_new);
return 1;
error:
unlock_vg(cmd, vp->vg_name_new);
vp->unlock_new_name = 0;
lockd_rename_vg_final(cmd, vg, 0);
return 0;
}
