Exemplo n.º 1
0
int lvm_lv_deactivate(lv_t lv)
{
	if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
		return -1;

	log_verbose("Deactivating logical volume \"%s\"", lv->name);
	if (!deactivate_lv(lv->vg->cmd, lv)) {
		log_error("Deactivate failed.");
		return -1;
	}
	return 0;
}
Exemplo n.º 2
0
static int _lvchange_activate(struct cmd_context *cmd, struct logical_volume *lv)
{
	int activate;

	activate = arg_uint_value(cmd, activate_ARG, 0);

	if (lv_is_cow(lv) && !lv_is_virtual_origin(origin_from_cow(lv)))
		lv = origin_from_cow(lv);

	if (activate == CHANGE_AAY) {
		if (!lv_passes_auto_activation_filter(cmd, lv))
			return 1;
		activate = CHANGE_ALY;
	}

	if (activate == CHANGE_ALN) {
		log_verbose("Deactivating logical volume \"%s\" locally",
			    lv->name);
		if (!deactivate_lv_local(cmd, lv))
			return_0;
	} else if (activate == CHANGE_AN) {
		log_verbose("Deactivating logical volume \"%s\"", lv->name);
		if (!deactivate_lv(cmd, lv))
			return_0;
	} else {
		if ((activate == CHANGE_AE) ||
		    lv_is_origin(lv) ||
		    lv_is_thin_type(lv)) {
			log_verbose("Activating logical volume \"%s\" "
				    "exclusively", lv->name);
			if (!activate_lv_excl(cmd, lv))
				return_0;
		} else if (activate == CHANGE_ALY) {
			log_verbose("Activating logical volume \"%s\" locally",
				    lv->name);
			if (!activate_lv_local(cmd, lv))
				return_0;
		} else {
			log_verbose("Activating logical volume \"%s\"",
				    lv->name);
			if (!activate_lv(cmd, lv))
				return_0;
		}

		if (background_polling())
			lv_spawn_background_polling(cmd, lv);
	}

	return 1;
}
Exemplo n.º 3
0
/*
 * Cleanup orphan device in the table with temporary activation
 * since in the suspend() we can't deactivate unused nodes
 * and the resume() phase mishandles orphan nodes.
 *
 * TODO: improve libdm to handle this case automatically
 */
static int _cleanup_orphan_lv(struct logical_volume *lv)
{
	lv->status |= LV_TEMPORARY;
	if (!activate_lv(lv->vg->cmd, lv)) {
		log_error("Failed to activate temporary %s", lv->name);
		return 0;
	}
	if (!deactivate_lv(lv->vg->cmd, lv)) {
		log_error("Failed to deactivate temporary %s", lv->name);
		return 0;
	}
	lv->status &= ~LV_TEMPORARY;

	return 1;
}
Exemplo n.º 4
0
static int lvchange_availability(struct cmd_context *cmd,
				 struct logical_volume *lv)
{
	int activate;

	activate = arg_uint_value(cmd, available_ARG, 0);

	if (activate == CHANGE_ALN) {
		log_verbose("Deactivating logical volume \"%s\" locally",
			    lv->name);
		if (!deactivate_lv_local(cmd, lv))
			return_0;
	} else if (activate == CHANGE_AN) {
		log_verbose("Deactivating logical volume \"%s\"", lv->name);
		if (!deactivate_lv(cmd, lv))
			return_0;
	} else {
		if (lv_is_origin(lv) || (activate == CHANGE_AE)) {
			log_verbose("Activating logical volume \"%s\" "
				    "exclusively", lv->name);
			if (!activate_lv_excl(cmd, lv))
				return_0;
		} else if (activate == CHANGE_ALY) {
			log_verbose("Activating logical volume \"%s\" locally",
				    lv->name);
			if (!activate_lv_local(cmd, lv))
				return_0;
		} else {
			log_verbose("Activating logical volume \"%s\"",
				    lv->name);
			if (!activate_lv(cmd, lv))
				return_0;
		}

		if (background_polling())
			lv_spawn_background_polling(cmd, lv);
	}

	return 1;
}
Exemplo n.º 5
0
/*
 * convert_vdo_pool_lv
 * @data_lv
 * @vtp
 * @virtual_extents
 *
 * Convert given data LV and its target parameters into a VDO LV with VDO pool.
 *
 * Returns: old data LV on success (passed data LV becomes VDO LV), NULL on failure
 */
struct logical_volume *convert_vdo_pool_lv(struct logical_volume *data_lv,
					   const struct dm_vdo_target_params *vtp,
					   uint32_t *virtual_extents)
{
	const uint64_t header_size = DEFAULT_VDO_POOL_HEADER_SIZE;
	const uint32_t extent_size = data_lv->vg->extent_size;
	struct cmd_context *cmd = data_lv->vg->cmd;
	struct logical_volume *vdo_pool_lv = data_lv;
	const struct segment_type *vdo_pool_segtype;
	struct lv_segment *vdo_pool_seg;
	uint64_t vdo_logical_size = 0;
	uint64_t adjust;

	if (!(vdo_pool_segtype = get_segtype_from_string(cmd, SEG_TYPE_NAME_VDO_POOL)))
		return_NULL;

	adjust = (*virtual_extents * (uint64_t) extent_size) % DM_VDO_BLOCK_SIZE;
	if (adjust) {
		*virtual_extents += (DM_VDO_BLOCK_SIZE - adjust) / extent_size;
		log_print_unless_silent("Rounding size up to 4,00 KiB VDO logical extent boundary: %s.",
					display_size(data_lv->vg->cmd, *virtual_extents * (uint64_t) extent_size));
	}

	if (*virtual_extents)
		vdo_logical_size =
			_get_virtual_size(*virtual_extents, extent_size, header_size);

	if (!dm_vdo_validate_target_params(vtp, vdo_logical_size))
		return_0;

	/* Format data LV as VDO volume */
	if (!_format_vdo_pool_data_lv(data_lv, vtp, &vdo_logical_size)) {
		log_error("Cannot format VDO pool volume %s.", display_lvname(data_lv));
		return NULL;
	}

	if (!deactivate_lv(data_lv->vg->cmd, data_lv)) {
		log_error("Aborting. Manual intervention required.");
		return NULL;
	}

	vdo_logical_size -= 2 * header_size;

	if (vdo_logical_size < extent_size) {
		if (!*virtual_extents)
			/* User has not specified size and at least 1 extent is necessary */
			log_error("Cannot create fully fitting VDO volume, "
				  "--virtualsize has to be specified.");

		log_error("Size %s for VDO volume cannot be smaller then extent size %s.",
			  display_size(data_lv->vg->cmd, vdo_logical_size),
			  display_size(data_lv->vg->cmd, extent_size));
		return NULL;
	}

	*virtual_extents = vdo_logical_size / extent_size;

	/* Move segments from existing data_lv into LV_vdata */
	if (!(data_lv = insert_layer_for_lv(cmd, vdo_pool_lv, 0, "_vdata")))
		return_NULL;

	vdo_pool_seg = first_seg(vdo_pool_lv);
	vdo_pool_seg->segtype = vdo_pool_segtype;
	vdo_pool_seg->vdo_params = *vtp;
	vdo_pool_seg->vdo_pool_header_size = DEFAULT_VDO_POOL_HEADER_SIZE;
	vdo_pool_seg->vdo_pool_virtual_extents = *virtual_extents;

	vdo_pool_lv->status |= LV_VDO_POOL;
	data_lv->status |= LV_VDO_POOL_DATA;

	return data_lv;
}
Exemplo n.º 6
0
static int lvchange_persistent(struct cmd_context *cmd,
			       struct logical_volume *lv)
{
	struct lvinfo info;
	int active = 0;

	if (!strcmp(arg_str_value(cmd, persistent_ARG, "n"), "n")) {
		if (!(lv->status & FIXED_MINOR)) {
			log_error("Minor number is already not persistent "
				  "for \"%s\"", lv->name);
			return 0;
		}
		lv->status &= ~FIXED_MINOR;
		lv->minor = -1;
		lv->major = -1;
		log_verbose("Disabling persistent device number for \"%s\"",
			    lv->name);
	} else {
		if (!arg_count(cmd, minor_ARG) && lv->minor < 0) {
			log_error("Minor number must be specified with -My");
			return 0;
		}
		if (arg_count(cmd, major_ARG) > 1) {
			log_error("Option -j/--major may not be repeated.");
			return 0;
		}
		if (arg_count(cmd, minor_ARG) > 1) {
			log_error("Option --minor may not be repeated.");
			return 0;
		}
		if (!arg_count(cmd, major_ARG) && lv->major < 0) {
			log_error("Major number must be specified with -My");
			return 0;
		}
		if (lv_info(cmd, lv, 0, &info, 0, 0) && info.exists)
			active = 1;
		if (active && !arg_count(cmd, force_ARG) &&
		    yes_no_prompt("Logical volume %s will be "
				  "deactivated temporarily. "
				  "Continue? [y/n]: ", lv->name) == 'n') {
			log_error("%s device number not changed.",
				  lv->name);
			return 0;
		}

		if (sigint_caught())
			return 0;

		log_verbose("Ensuring %s is inactive.", lv->name);
		if (!deactivate_lv(cmd, lv)) {
			log_error("%s: deactivation failed", lv->name);
			return 0;
		}
		lv->status |= FIXED_MINOR;
		lv->minor = arg_int_value(cmd, minor_ARG, lv->minor);
		lv->major = arg_int_value(cmd, major_ARG, lv->major);
		log_verbose("Setting persistent device number to (%d, %d) "
			    "for \"%s\"", lv->major, lv->minor, lv->name);

	}

	log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
	if (!vg_write(lv->vg) || !vg_commit(lv->vg))
		return_0;

	backup(lv->vg);

	if (active) {
		log_verbose("Re-activating logical volume \"%s\"", lv->name);
		if (!activate_lv(cmd, lv)) {
			log_error("%s: reactivation failed", lv->name);
			return 0;
		}
	}

	return 1;
}
Exemplo n.º 7
0
static int lvchange_resync(struct cmd_context *cmd,
			      struct logical_volume *lv)
{
	int active = 0;
	int monitored;
	struct lvinfo info;
	struct logical_volume *log_lv;

	if (!(lv->status & MIRRORED)) {
		log_error("Unable to resync %s because it is not mirrored.",
			  lv->name);
		return 1;
	}

	if (lv->status & PVMOVE) {
		log_error("Unable to resync pvmove volume %s", lv->name);
		return 0;
	}

	if (lv->status & LOCKED) {
		log_error("Unable to resync locked volume %s", lv->name);
		return 0;
	}

	if (lv_info(cmd, lv, 0, &info, 1, 0)) {
		if (info.open_count) {
			log_error("Can't resync open logical volume \"%s\"",
				  lv->name);
			return 0;
		}

		if (info.exists) {
			if (!arg_count(cmd, yes_ARG) &&
			    yes_no_prompt("Do you really want to deactivate "
					  "logical volume %s to resync it? [y/n]: ",
					  lv->name) == 'n') {
				log_error("Logical volume \"%s\" not resynced",
					  lv->name);
				return 0;
			}

			if (sigint_caught())
				return 0;

			active = 1;
		}
	}

	/* Activate exclusively to ensure no nodes still have LV active */
	monitored = dmeventd_monitor_mode();
	init_dmeventd_monitor(0);

	if (!deactivate_lv(cmd, lv)) {
		log_error("Unable to deactivate %s for resync", lv->name);
		return 0;
	}

	if (vg_is_clustered(lv->vg) && lv_is_active(lv)) {
		log_error("Can't get exclusive access to clustered volume %s",
			  lv->name);
		return 0;
	}

	init_dmeventd_monitor(monitored);

	log_lv = first_seg(lv)->log_lv;

	log_very_verbose("Starting resync of %s%s%s mirror \"%s\"",
			 (active) ? "active " : "",
			 vg_is_clustered(lv->vg) ? "clustered " : "",
			 (log_lv) ? "disk-logged" : "core-logged",
			 lv->name);

	/*
	 * If this mirror has a core log (i.e. !log_lv),
	 * then simply deactivating/activating will cause
	 * it to reset the sync status.  We only need to
	 * worry about persistent logs.
	 */
	if (!log_lv && !(lv->status & LV_NOTSYNCED)) {
		if (active && !activate_lv(cmd, lv)) {
			log_error("Failed to reactivate %s to resynchronize "
				  "mirror", lv->name);
			return 0;
		}
		return 1;
	}

	lv->status &= ~LV_NOTSYNCED;

	if (log_lv) {
		/* Separate mirror log so we can clear it */
		detach_mirror_log(first_seg(lv));

		if (!vg_write(lv->vg)) {
			log_error("Failed to write intermediate VG metadata.");
			if (!attach_mirror_log(first_seg(lv), log_lv))
				stack;
			if (active && !activate_lv(cmd, lv))
				stack;
			return 0;
		}

		if (!vg_commit(lv->vg)) {
			log_error("Failed to commit intermediate VG metadata.");
			if (!attach_mirror_log(first_seg(lv), log_lv))
				stack;
			if (active && !activate_lv(cmd, lv))
				stack;
			return 0;
		}

		backup(lv->vg);

		if (!activate_lv(cmd, log_lv)) {
			log_error("Unable to activate %s for mirror log resync",
				  log_lv->name);
			return 0;
		}

		log_very_verbose("Clearing log device %s", log_lv->name);
		if (!set_lv(cmd, log_lv, log_lv->size, 0)) {
			log_error("Unable to reset sync status for %s", lv->name);
			if (!deactivate_lv(cmd, log_lv))
				log_error("Failed to deactivate log LV after "
					  "wiping failed");
			return 0;
		}

		if (!deactivate_lv(cmd, log_lv)) {
			log_error("Unable to deactivate log LV %s after wiping "
				  "for resync", log_lv->name);
			return 0;
		}

		/* Put mirror log back in place */
		if (!attach_mirror_log(first_seg(lv), log_lv))
			stack;
	}

	log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
	if (!vg_write(lv->vg) || !vg_commit(lv->vg)) {
		log_error("Failed to update metadata on disk.");
		return 0;
	}

	if (active && !activate_lv(cmd, lv)) {
		log_error("Failed to reactivate %s after resync", lv->name);
		return 0;
	}

	return 1;
}
Exemplo n.º 8
0
int vg_remove_snapshot(struct logical_volume *cow)
{
	int merging_snapshot = 0;
	struct logical_volume *origin = origin_from_cow(cow);
	int is_origin_active = lv_is_active(origin);

	if (is_origin_active &&
	    lv_is_virtual_origin(origin)) {
		if (!deactivate_lv(origin->vg->cmd, origin)) {
			log_error("Failed to deactivate logical volume \"%s\"",
				  origin->name);
			return 0;
		}
		is_origin_active = 0;
	}

	dm_list_del(&cow->snapshot->origin_list);
	origin->origin_count--;

	if (lv_is_merging_origin(origin) &&
	    (find_snapshot(origin) == find_snapshot(cow))) {
		clear_snapshot_merge(origin);
		/*
		 * preload origin IFF "snapshot-merge" target is active
		 * - IMPORTANT: avoids preload if inactivate merge is pending
		 */
		if (lv_has_target_type(origin->vg->vgmem, origin, NULL,
				       TARGET_NAME_SNAPSHOT_MERGE)) {
			/*
			 * preload origin to:
			 * - allow proper release of -cow
			 * - avoid allocations with other devices suspended
			 *   when transitioning from "snapshot-merge" to
			 *   "snapshot-origin after a merge completes.
			 */
			merging_snapshot = 1;
		}
	}

	if (!lv_remove(cow->snapshot->lv)) {
		log_error("Failed to remove internal snapshot LV %s",
			  cow->snapshot->lv->name);
		return 0;
	}

	cow->snapshot = NULL;
	lv_set_visible(cow);

	/* format1 must do the change in one step, with the commit last. */
	if (!(origin->vg->fid->fmt->features & FMT_MDAS)) {
		/* Get the lock for COW volume */
		if (is_origin_active && !activate_lv(cow->vg->cmd, cow)) {
			log_error("Unable to activate logical volume \"%s\"",
				  cow->name);
			return 0;
		}
		return 1;
	}

	if (!vg_write(origin->vg))
		return_0;

	/* Skip call suspend, if device is not active */
	if (is_origin_active && !suspend_lv(origin->vg->cmd, origin)) {
		log_error("Failed to refresh %s without snapshot.",
			  origin->name);
		vg_revert(origin->vg);
		return 0;
	}
	if (!vg_commit(origin->vg))
		return_0;

	if (is_origin_active) {
		/*
		 * If the snapshot was active and the COW LV is taken away
		 * the LV lock on cluster has to be grabbed, so use
		 * activate_lv() which resumes suspend cow device.
		 */
		if (!merging_snapshot && !activate_lv(cow->vg->cmd, cow)) {
			log_error("Failed to activate %s.", cow->name);
			return 0;
		}

		if (!resume_lv(origin->vg->cmd, origin)) {
			log_error("Failed to resume %s.", origin->name);
			return 0;
		}

		/*
		 * For merged snapshot and clustered VG activate cow LV so
		 * the following call to deactivate_lv() can clean-up table
		 * entries. For this clustered lock need to be held.
		 */
		if (vg_is_clustered(cow->vg) &&
		    merging_snapshot && !activate_lv(cow->vg->cmd, cow)) {
			log_error("Failed to activate %s.", cow->name);
			return 0;
		}
	}

	return 1;
}
Exemplo n.º 9
0
static int lvremove_single(struct cmd_context *cmd, struct logical_volume *lv,
			   void *handle) // __attribute((unused)))
{
	struct volume_group *vg;
	struct lvinfo info;
	struct logical_volume *origin = NULL;

	vg = lv->vg;

	if (!vg_check_status(vg, LVM_WRITE))
		return ECMD_FAILED;

	if (lv_is_origin(lv)) {
		log_error("Can't remove logical volume \"%s\" under snapshot",
			  lv->name);
		return ECMD_FAILED;
	}

	if (lv->status & MIRROR_IMAGE) {
		log_error("Can't remove logical volume %s used by a mirror",
			  lv->name);
		return ECMD_FAILED;
	}

	if (lv->status & MIRROR_LOG) {
		log_error("Can't remove logical volume %s used as mirror log",
			  lv->name);
		return ECMD_FAILED;
	}

	if (lv->status & LOCKED) {
		log_error("Can't remove locked LV %s", lv->name);
		return ECMD_FAILED;
	}

	/* FIXME Ensure not referred to by another existing LVs */

	if (lv_info(cmd, lv, &info, 1)) {
		if (info.open_count) {
			log_error("Can't remove open logical volume \"%s\"",
				  lv->name);
			return ECMD_FAILED;
		}

		if (info.exists && !arg_count(cmd, force_ARG)) {
			if (yes_no_prompt("Do you really want to remove active "
					  "logical volume \"%s\"? [y/n]: ",
					  lv->name) == 'n') {
				log_print("Logical volume \"%s\" not removed",
					  lv->name);
				return ECMD_FAILED;
			}
		}
	}

	if (!archive(vg))
		return ECMD_FAILED;

	/* If the VG is clustered then make sure no-one else is using the LV
	   we are about to remove */
	if (vg_status(vg) & CLUSTERED) {
		if (!activate_lv_excl(cmd, lv)) {
			log_error("Can't get exclusive access to volume \"%s\"",
				  lv->name);
			return ECMD_FAILED;
		}
	}

	/* FIXME Snapshot commit out of sequence if it fails after here? */
	if (!deactivate_lv(cmd, lv)) {
		log_error("Unable to deactivate logical volume \"%s\"",
			  lv->name);
		return ECMD_FAILED;
	}

	if (lv_is_cow(lv)) {
		origin = origin_from_cow(lv);
		log_verbose("Removing snapshot %s", lv->name);
		if (!vg_remove_snapshot(lv)) {
			stack;
			return ECMD_FAILED;
		}
	}

	log_verbose("Releasing logical volume \"%s\"", lv->name);
	if (!lv_remove(lv)) {
		log_error("Error releasing logical volume \"%s\"", lv->name);
		return ECMD_FAILED;
	}

	/* store it on disks */
	if (!vg_write(vg))
		return ECMD_FAILED;

	backup(vg);

	if (!vg_commit(vg))
		return ECMD_FAILED;

	/* If no snapshots left, reload without -real. */
	if (origin && !lv_is_origin(origin)) {
		if (!suspend_lv(cmd, origin))
			log_error("Failed to refresh %s without snapshot.", origin->name);
		else if (!resume_lv(cmd, origin))
			log_error("Failed to resume %s.", origin->name);
	}

	log_print("Logical volume \"%s\" successfully removed", lv->name);
	return ECMD_PROCESSED;
}