1 /* $NetBSD: dev_manager.h,v 1.1.1.1 2008/12/22 00:18:00 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2002-2004 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_DEV_MANAGER_H 19 #define _LVM_DEV_MANAGER_H 20 21 struct logical_volume; 22 struct volume_group; 23 struct cmd_context; 24 struct dev_manager; 25 struct dm_info; 26 struct device; 27 28 /* 29 * Constructor and destructor. 30 */ 31 struct dev_manager *dev_manager_create(struct cmd_context *cmd, 32 const char *vg_name); 33 void dev_manager_destroy(struct dev_manager *dm); 34 void dev_manager_release(void); 35 void dev_manager_exit(void); 36 37 /* 38 * The device handler is responsible for creating all the layered 39 * dm devices, and ensuring that all constraints are maintained 40 * (eg, an origin is created before its snapshot, but is not 41 * unsuspended until the snapshot is also created.) 42 */ 43 int dev_manager_info(struct dm_pool *mem, const char *name, 44 const struct logical_volume *lv, 45 int mknodes, int with_open_count, int with_read_ahead, 46 struct dm_info *info, uint32_t *read_ahead); 47 int dev_manager_snapshot_percent(struct dev_manager *dm, 48 const struct logical_volume *lv, 49 float *percent); 50 int dev_manager_mirror_percent(struct dev_manager *dm, 51 struct logical_volume *lv, int wait, 52 float *percent, uint32_t *event_nr); 53 int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv, 54 int lockfs); 55 int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv); 56 int dev_manager_preload(struct dev_manager *dm, struct logical_volume *lv); 57 int dev_manager_deactivate(struct dev_manager *dm, struct logical_volume *lv); 58 59 int dev_manager_lv_mknodes(const struct logical_volume *lv); 60 int dev_manager_lv_rmnodes(const struct logical_volume *lv); 61 62 /* 63 * Put the desired changes into effect. 64 */ 65 int dev_manager_execute(struct dev_manager *dm); 66 67 int dev_manager_device_uses_vg(struct device *dev, 68 struct volume_group *vg); 69 70 #endif 71