Exemple #1
0
static int lvscan_single(struct cmd_context *cmd, struct logical_volume *lv,
			 void *handle) // __attribute((unused)))
{
	struct lvinfo info;
	int lv_total = 0;
	uint64_t lv_capacity_total = 0;
	int inkernel, snap_active = 1;
	struct lv_segment *snap_seg = NULL;
	float snap_percent;     /* fused, fsize; */

	const char *active_str, *snapshot_str;

	if (!arg_count(cmd, all_ARG) && !lv_is_visible(lv))
		return ECMD_PROCESSED;

	inkernel = lv_info(cmd, lv, &info, 1) && info.exists;
	if (lv_is_origin(lv)) {
		list_iterate_items_gen(snap_seg, struct lv_segment, &lv->snapshot_segs,
				       origin_list) {
			if (inkernel &&
			    (snap_active = lv_snapshot_percent(snap_seg->cow,
							       &snap_percent)))
				if (snap_percent < 0 || snap_percent >= 100)
					snap_active = 0;
		}
		snap_seg = NULL;
	} else if (lv_is_cow(lv)) {
Exemple #2
0
uint64_t lvm_lv_is_suspended(const lv_t lv)
{
	struct lvinfo info;
	if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
	    info.exists && info.suspended)
		return 1;
	return 0;
}
Exemple #3
0
uint64_t lvm_lv_is_active(const lv_t lv)
{
	struct lvinfo info;
	if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
	    info.exists && info.live_table)
		return 1;
	return 0;
}
Exemple #4
0
static int lvchange_background_polling(struct cmd_context *cmd,
				       struct logical_volume *lv)
{
	struct lvinfo info;

	if (!lv_info(cmd, lv, 0, &info, 0, 0) || !info.exists) {
		log_error("Logical volume, %s, is not active", lv->name);
		return 0;
	}

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

	return 1;
}
Exemple #5
0
static int lvchange_monitoring(struct cmd_context *cmd,
			       struct logical_volume *lv)
{
	struct lvinfo info;

	if (!lv_info(cmd, lv, 0, &info, 0, 0) || !info.exists) {
		log_error("Logical volume, %s, is not active", lv->name);
		return 0;
	}

	/* do not monitor pvmove lv's */
	if (lv->status & PVMOVE)
		return 1;

	if ((dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) &&
	    !monitor_dev_for_events(cmd, lv, 0, dmeventd_monitor_mode()))
		return_0;

	return 1;
}
Exemple #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;
}
Exemple #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;
}
Exemple #8
0
static int lvchange_permission(struct cmd_context *cmd,
			       struct logical_volume *lv)
{
	uint32_t lv_access;
	struct lvinfo info;
	int r = 0;

	lv_access = arg_uint_value(cmd, permission_ARG, 0);

	if ((lv_access & LVM_WRITE) && (lv->status & LVM_WRITE)) {
		log_error("Logical volume \"%s\" is already writable",
			  lv->name);
		return 0;
	}

	if (!(lv_access & LVM_WRITE) && !(lv->status & LVM_WRITE)) {
		log_error("Logical volume \"%s\" is already read only",
			  lv->name);
		return 0;
	}

	if ((lv->status & MIRRORED) && (vg_is_clustered(lv->vg)) &&
	    lv_info(cmd, lv, 0, &info, 0, 0) && info.exists) {
		log_error("Cannot change permissions of mirror \"%s\" "
			  "while active.", lv->name);
		return 0;
	}

	/* Not allowed to change permissions on RAID sub-LVs directly */
	if ((lv->status & RAID_META) || (lv->status & RAID_IMAGE)) {
		log_error("Cannot change permissions of RAID %s \"%s\"",
			  (lv->status & RAID_IMAGE) ? "image" :
			  "metadata area", lv->name);
		return 0;
	}

	if (lv_access & LVM_WRITE) {
		lv->status |= LVM_WRITE;
		log_verbose("Setting logical volume \"%s\" read/write",
			    lv->name);
	} else {
		lv->status &= ~LVM_WRITE;
		log_verbose("Setting logical volume \"%s\" read-only",
			    lv->name);
	}

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

	if (!suspend_lv(cmd, lv)) {
		log_error("Failed to lock %s", lv->name);
		vg_revert(lv->vg);
		goto out;
	}

	if (!vg_commit(lv->vg)) {
		if (!resume_lv(cmd, lv))
			stack;
		goto_out;
	}

	log_very_verbose("Updating permissions for \"%s\" in kernel", lv->name);
	if (!resume_lv(cmd, lv)) {
		log_error("Problem reactivating %s", lv->name);
		goto out;
	}

	r = 1;
out:
	backup(lv->vg);
	return r;
}
Exemple #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;
}