Exemplo n.º 1
0
static int _restore_pv(struct volume_group *vg, const char *pv_name)
{
	struct pv_list *pvl = NULL;
	pvl = find_pv_in_vg(vg, pv_name);
	if (!pvl) {
		log_warn("WARNING: PV %s not found in VG %s", pv_name, vg->name);
		return 0;
	}

	if (!(pvl->pv->status & MISSING_PV)) {
		log_warn("WARNING: PV %s was not missing in VG %s", pv_name, vg->name);
		return 0;
	}

	if (!pvl->pv->dev) {
		log_warn("WARNING: The PV %s is still missing.", pv_name);
		return 0;
	}

	pvl->pv->status &= ~MISSING_PV;
	return 1;
}
Exemplo n.º 2
0
static int _pv_resize_single(struct cmd_context *cmd,
			     struct volume_group *vg,
			     struct physical_volume *pv,
			     const uint64_t new_size)
{
	struct pv_list *pvl;
	uint64_t size = 0;
	uint32_t new_pe_count = 0;
	int r = 0;
	struct dm_list mdas;
	const char *pv_name = pv_dev_name(pv);
	const char *vg_name;
	struct lvmcache_info *info;
	int mda_count = 0;
	struct volume_group *old_vg = vg;

	dm_list_init(&mdas);

	if (is_orphan_vg(pv_vg_name(pv))) {
		vg_name = VG_ORPHANS;
		if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) {
			log_error("Can't get lock for orphans");
			return 0;
		}

		if (!(pv = pv_read(cmd, pv_name, &mdas, NULL, 1, 0))) {
			unlock_vg(cmd, vg_name);
			log_error("Unable to read PV \"%s\"", pv_name);
			return 0;
		}

		mda_count = dm_list_size(&mdas);
	} else {
		vg_name = pv_vg_name(pv);

		vg = vg_read_for_update(cmd, vg_name, NULL, 0);

		if (vg_read_error(vg))
			goto bad;

		if (!(pvl = find_pv_in_vg(vg, pv_name))) {
			log_error("Unable to find \"%s\" in volume group \"%s\"",
				  pv_name, vg->name);
			goto bad;
		}

		pv = pvl->pv;

		if (!(info = info_from_pvid(pv->dev->pvid, 0))) {
			log_error("Can't get info for PV %s in volume group %s",
				  pv_name, vg->name);
			goto bad;
		}

		mda_count = dm_list_size(&info->mdas);

		if (!archive(vg))
			goto bad;
	}

	/* FIXME Create function to test compatibility properly */
	if (mda_count > 1) {
		log_error("%s: too many metadata areas for pvresize", pv_name);
		goto bad;
	}

	if (!(pv->fmt->features & FMT_RESIZE_PV)) {
		log_error("Physical volume %s format does not support resizing.",
			  pv_name);
		goto bad;
	}

	/* Get new size */
	if (!dev_get_size(pv_dev(pv), &size)) {
		log_error("%s: Couldn't get size.", pv_name);
		goto bad;
	}

	if (new_size) {
		if (new_size > size)
			log_warn("WARNING: %s: Overriding real size. "
				  "You could lose data.", pv_name);
		log_verbose("%s: Pretending size is %" PRIu64 " not %" PRIu64
			    " sectors.", pv_name, new_size, pv_size(pv));
		size = new_size;
	}

	if (size < PV_MIN_SIZE) {
		log_error("%s: Size must exceed minimum of %ld sectors.",
			  pv_name, PV_MIN_SIZE);
		goto bad;
	}

	if (size < pv_pe_start(pv)) {
		log_error("%s: Size must exceed physical extent start of "
			  "%" PRIu64 " sectors.", pv_name, pv_pe_start(pv));
		goto bad;
	}

	pv->size = size;

	if (vg) {
		pv->size -= pv_pe_start(pv);
		new_pe_count = pv_size(pv) / vg->extent_size;

 		if (!new_pe_count) {
			log_error("%s: Size must leave space for at "
				  "least one physical extent of "
				  "%" PRIu32 " sectors.", pv_name,
				  pv_pe_size(pv));
			goto bad;
		}

		if (!pv_resize(pv, vg, new_pe_count))
			goto_bad;
	}

	log_verbose("Resizing volume \"%s\" to %" PRIu64 " sectors.",
		    pv_name, pv_size(pv));

	log_verbose("Updating physical volume \"%s\"", pv_name);
	if (!is_orphan_vg(pv_vg_name(pv))) {
		if (!vg_write(vg) || !vg_commit(vg)) {
			log_error("Failed to store physical volume \"%s\" in "
				  "volume group \"%s\"", pv_name, vg->name);
			goto bad;
		}
		backup(vg);
	} else if (!(pv_write(cmd, pv, NULL, INT64_C(-1)))) {
		log_error("Failed to store physical volume \"%s\"",
			  pv_name);
		goto bad;;
	}

	log_print("Physical volume \"%s\" changed", pv_name);
	r = 1;

bad:
	unlock_vg(cmd, vg_name);
	if (!old_vg)
		vg_release(vg);
	return r;
}