1 /* $NetBSD: activate.h,v 1.1.1.1 2008/12/22 00:18:47 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5 * Copyright (C) 2004-2007 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_ACTIVATE_H 19 #define LVM_ACTIVATE_H 20 21 #include "metadata-exported.h" 22 23 struct lvinfo { 24 int exists; 25 int suspended; 26 unsigned int open_count; 27 int major; 28 int minor; 29 int read_only; 30 int live_table; 31 int inactive_table; 32 uint32_t read_ahead; 33 }; 34 35 /* target attribute flags */ 36 #define MIRROR_LOG_CLUSTERED 0x00000001U 37 38 void set_activation(int activation); 39 int activation(void); 40 41 int driver_version(char *version, size_t size); 42 int library_version(char *version, size_t size); 43 int lvm1_present(struct cmd_context *cmd); 44 45 int module_present(const char *target_name); 46 int target_present(const char *target_name, int use_modprobe); 47 int target_version(const char *target_name, uint32_t *maj, 48 uint32_t *min, uint32_t *patchlevel); 49 int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg, 50 struct dm_list *modules); 51 int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv, 52 struct dm_list *modules); 53 54 void activation_release(void); 55 void activation_exit(void); 56 57 int lv_suspend(struct cmd_context *cmd, const char *lvid_s); 58 int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s); 59 int lv_resume(struct cmd_context *cmd, const char *lvid_s); 60 int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s); 61 int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive); 62 int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, 63 int exclusive); 64 int lv_deactivate(struct cmd_context *cmd, const char *lvid_s); 65 66 int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv); 67 68 /* 69 * Returns 1 if info structure has been populated, else 0. 70 */ 71 int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info, 72 int with_open_count, int with_read_ahead); 73 int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, 74 struct lvinfo *info, int with_open_count, int with_read_ahead); 75 76 /* 77 * Returns 1 if activate_lv has been set: 1 = activate; 0 = don't. 78 */ 79 int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, 80 int *activate_lv); 81 82 /* 83 * Returns 1 if percent has been set, else 0. 84 */ 85 int lv_snapshot_percent(const struct logical_volume *lv, float *percent); 86 int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, 87 int wait, float *percent, uint32_t *event_nr); 88 89 /* 90 * Return number of LVs in the VG that are active. 91 */ 92 int lvs_in_vg_activated(struct volume_group *vg); 93 int lvs_in_vg_activated_by_uuid_only(struct volume_group *vg); 94 int lvs_in_vg_opened(const struct volume_group *vg); 95 96 int lv_is_active(struct logical_volume *lv); 97 98 int monitor_dev_for_events(struct cmd_context *cmd, 99 struct logical_volume *lv, int do_reg); 100 101 /* 102 * Returns 1 if PV has a dependency tree that uses anything in VG. 103 */ 104 int pv_uses_vg(struct physical_volume *pv, 105 struct volume_group *vg); 106 107 /* 108 * Returns 1 if mapped device is not suspended. 109 */ 110 int device_is_usable(dev_t dev); 111 112 #endif 113