1 /* $NetBSD: activate.h,v 1.1.1.2 2009/12/02 00:26:23 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(struct cmd_context *cmd, const char *target_name); 46 int target_present(struct cmd_context *cmd, const char *target_name, 47 int use_modprobe); 48 int target_version(const char *target_name, uint32_t *maj, 49 uint32_t *min, uint32_t *patchlevel); 50 int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg, 51 struct dm_list *modules); 52 int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv, 53 struct dm_list *modules); 54 55 void activation_release(void); 56 void activation_exit(void); 57 58 int lv_suspend(struct cmd_context *cmd, const char *lvid_s); 59 int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s); 60 int lv_resume(struct cmd_context *cmd, const char *lvid_s); 61 int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s); 62 int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive); 63 int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, 64 int exclusive); 65 int lv_deactivate(struct cmd_context *cmd, const char *lvid_s); 66 67 int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv); 68 69 /* 70 * Returns 1 if info structure has been populated, else 0. 71 */ 72 int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info, 73 int with_open_count, int with_read_ahead); 74 int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, 75 struct lvinfo *info, int with_open_count, int with_read_ahead); 76 77 /* 78 * Returns 1 if activate_lv has been set: 1 = activate; 0 = don't. 79 */ 80 int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, 81 int *activate_lv); 82 83 /* 84 * Returns 1 if percent has been set, else 0. 85 */ 86 int lv_snapshot_percent(const struct logical_volume *lv, float *percent, 87 percent_range_t *percent_range); 88 int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, 89 int wait, float *percent, percent_range_t *percent_range, 90 uint32_t *event_nr); 91 92 /* 93 * Return number of LVs in the VG that are active. 94 */ 95 int lvs_in_vg_activated(struct volume_group *vg); 96 int lvs_in_vg_activated_by_uuid_only(struct volume_group *vg); 97 int lvs_in_vg_opened(const struct volume_group *vg); 98 99 int lv_is_active(struct logical_volume *lv); 100 101 int monitor_dev_for_events(struct cmd_context *cmd, 102 struct logical_volume *lv, int do_reg); 103 104 /* 105 * Returns 1 if PV has a dependency tree that uses anything in VG. 106 */ 107 int pv_uses_vg(struct physical_volume *pv, 108 struct volume_group *vg); 109 110 /* 111 * Returns 1 if mapped device is not suspended. 112 */ 113 int device_is_usable(dev_t dev); 114 115 #endif 116