1 /* $NetBSD: pv_map.h,v 1.1.1.1 2008/12/22 00:18:09 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 6 * 7 * This file is part of LVM2. 8 * 9 * This copyrighted material is made available to anyone wishing to use, 10 * modify, copy, or redistribute it subject to the terms and conditions 11 * of the GNU Lesser General Public License v.2.1. 12 * 13 * You should have received a copy of the GNU Lesser General Public License 14 * along with this program; if not, write to the Free Software Foundation, 15 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16 */ 17 18 #ifndef _LVM_PV_MAP_H 19 #define _LVM_PV_MAP_H 20 21 #include "metadata.h" 22 23 /* 24 * The in core rep. only stores a mapping from 25 * logical extents to physical extents against an 26 * lv. Sometimes, when allocating a new lv for 27 * instance, it is useful to have the inverse 28 * mapping available. 29 */ 30 31 struct pv_area { 32 struct pv_map *map; 33 uint32_t start; 34 uint32_t count; 35 36 struct dm_list list; /* pv_map.areas */ 37 }; 38 39 struct pv_map { 40 struct physical_volume *pv; 41 struct dm_list areas; /* struct pv_areas */ 42 uint32_t pe_count; /* Total number of PEs */ 43 44 struct dm_list list; 45 }; 46 47 /* 48 * Find intersection between available_pvs and free space in VG 49 */ 50 struct dm_list *create_pv_maps(struct dm_pool *mem, struct volume_group *vg, 51 struct dm_list *allocatable_pvs); 52 53 void consume_pv_area(struct pv_area *area, uint32_t to_go); 54 55 uint32_t pv_maps_size(struct dm_list *pvms); 56 57 #endif 58