| /* |
| * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. |
| * Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved. |
| * |
| * This file is part of LVM2. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU Lesser General Public License v.2.1. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #ifndef _LVM_LV_H |
| #define _LVM_LV_H |
| |
| #include "vg.h" |
| |
| union lvid; |
| struct lv_segment; |
| struct replicator_device; |
| enum activation_change; |
| |
| struct logical_volume { |
| union lvid lvid; |
| const char *name; |
| |
| struct volume_group *vg; |
| |
| uint64_t status; |
| alloc_policy_t alloc; |
| struct profile *profile; |
| uint32_t read_ahead; |
| int32_t major; |
| int32_t minor; |
| |
| uint64_t size; /* Sectors visible */ |
| uint32_t le_count; /* Logical extents visible */ |
| |
| uint32_t origin_count; |
| uint32_t external_count; |
| struct dm_list snapshot_segs; |
| struct lv_segment *snapshot; |
| |
| struct replicator_device *rdevice;/* For replicator-devs, rimages, slogs - reference to rdevice */ |
| struct dm_list rsites; /* For replicators - all sites */ |
| |
| struct dm_list segments; |
| struct dm_list tags; |
| struct dm_list segs_using_this_lv; |
| struct dm_list indirect_glvs; /* For keeping track of historical LVs in ancestry chain */ |
| |
| /* |
| * this_glv variable is used as a helper for handling historical LVs. |
| * If this LVs has no role at all in keeping track of historical LVs, |
| * the this_glv variable is NULL. See also comments for struct |
| * generic_logical_volume and struct historical_logical_volume below. |
| */ |
| struct generic_logical_volume *this_glv; |
| |
| uint64_t timestamp; |
| unsigned new_lock_args:1; |
| const char *hostname; |
| const char *lock_args; |
| }; |
| |
| /* |
| * With the introduction of tracking historical LVs, we need to make |
| * a difference between live LV (struct logical_volume) and historical LV |
| * (struct historical_logical_volume). To minimize the impact of this change |
| * and to minimize the changes needed in the existing code, we use a |
| * little trick here - when processing LVs (e.g. while reporting LV |
| * properties), each historical LV is represented as dummy LV which is |
| * an instance of struct logical_volume with all its properties set to |
| * blank (hence "dummy LV") and with this_glv pointing to the struct |
| * historical_logical_volume. This way all the existing code working with |
| * struct logical_volume will see this historical LV as dummy live LV while |
| * the code that needs to recognize between live and historical LV will |
| * check this_glv first and then it will work either with the live |
| * or historical LV properties appropriately. |
| */ |
| struct generic_logical_volume; |
| |
| /* |
| * historical logical volume is an LV that has been removed already. |
| * This is used to keep track of LV history. |
| */ |
| struct historical_logical_volume { |
| union lvid lvid; |
| const char *name; |
| struct volume_group *vg; |
| uint64_t timestamp; |
| uint64_t timestamp_removed; |
| struct generic_logical_volume *indirect_origin; |
| struct dm_list indirect_glvs; /* list of struct generic_logical_volume */ |
| unsigned checked:1; /* set if this historical LV has been checked for validity */ |
| unsigned valid:1; /* historical LV is valid if there's at least one live LV among ancestors */ |
| }; |
| |
| struct generic_logical_volume { |
| int is_historical; |
| union { |
| struct logical_volume *live; /* is_historical=0 */ |
| struct historical_logical_volume *historical; /* is_historical=1 */ |
| }; |
| }; |
| |
| struct lv_with_info_and_seg_status; |
| |
| /* LV dependencies */ |
| struct logical_volume *lv_parent(const struct logical_volume *lv); |
| struct logical_volume *lv_convert_lv(const struct logical_volume *lv); |
| struct logical_volume *lv_origin_lv(const struct logical_volume *lv); |
| struct logical_volume *lv_mirror_log_lv(const struct logical_volume *lv); |
| struct logical_volume *lv_data_lv(const struct logical_volume *lv); |
| struct logical_volume *lv_convert(const struct logical_volume *lv); |
| struct logical_volume *lv_origin(const struct logical_volume *lv); |
| struct logical_volume *lv_mirror_log(const struct logical_volume *lv); |
| struct logical_volume *lv_data(const struct logical_volume *lv); |
| struct logical_volume *lv_metadata_lv(const struct logical_volume *lv); |
| struct logical_volume *lv_pool_lv(const struct logical_volume *lv); |
| |
| /* LV properties */ |
| uint64_t lv_size(const struct logical_volume *lv); |
| uint64_t lvseg_size(const struct lv_segment *seg); |
| uint64_t lvseg_chunksize(const struct lv_segment *seg); |
| uint64_t lv_origin_size(const struct logical_volume *lv); |
| uint64_t lv_metadata_size(const struct logical_volume *lv); |
| struct profile *lv_config_profile(const struct logical_volume *lv); |
| const char *lv_layer(const struct logical_volume *lv); |
| const struct logical_volume *lv_lock_holder(const struct logical_volume *lv); |
| const struct logical_volume *lv_committed(const struct logical_volume *lv); |
| int lv_mirror_image_in_sync(const struct logical_volume *lv); |
| int lv_raid_image_in_sync(const struct logical_volume *lv); |
| int lv_raid_healthy(const struct logical_volume *lv); |
| const char *lvseg_name(const struct lv_segment *seg); |
| uint64_t lvseg_start(const struct lv_segment *seg); |
| struct dm_list *lvseg_devices(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_devices_str(struct dm_pool *mem, const struct lv_segment *seg); |
| struct dm_list *lvseg_metadata_devices(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_metadata_devices_str(struct dm_pool *mem, const struct lv_segment *seg); |
| struct dm_list *lvseg_seg_pe_ranges(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_seg_pe_ranges_str(struct dm_pool *mem, const struct lv_segment *seg); |
| struct dm_list *lvseg_seg_le_ranges(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_seg_le_ranges_str(struct dm_pool *mem, const struct lv_segment *seg); |
| struct dm_list *lvseg_seg_metadata_le_ranges(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_seg_metadata_le_ranges_str(struct dm_pool *mem, const struct lv_segment *seg); |
| |
| /* LV kernel properties */ |
| int lv_kernel_major(const struct logical_volume *lv); |
| int lv_kernel_minor(const struct logical_volume *lv); |
| uint32_t lv_kernel_read_ahead(const struct logical_volume *lv); |
| char *lvseg_kernel_discards_dup(struct dm_pool *mem, const struct lv_segment *seg); |
| |
| /* LV modification functions */ |
| int lv_set_creation(struct logical_volume *lv, |
| const char *hostname, uint64_t timestamp); |
| int lv_active_change(struct cmd_context *cmd, struct logical_volume *lv, |
| enum activation_change activate, int needs_exlusive); |
| |
| /* LV dup functions */ |
| char *lv_attr_dup_with_info_and_seg_status(struct dm_pool *mem, const struct lv_with_info_and_seg_status *lvdm); |
| char *lv_attr_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_tags_dup(const struct logical_volume *lv); |
| char *lv_path_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_dmpath_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_move_pv_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_move_pv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_convert_lv_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_convert_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_mirror_log_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_mirror_log_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_data_lv_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_data_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_metadata_lv_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_metadata_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_pool_lv_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_pool_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_modules_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_name_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_fullname_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_parent_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_origin_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_origin_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lvseg_segtype_dup(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_discards_dup(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_cachemode_dup(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_monitor_dup(struct dm_pool *mem, const struct lv_segment *seg); |
| char *lvseg_tags_dup(const struct lv_segment *seg); |
| char *lv_creation_time_dup(struct dm_pool *mem, const struct logical_volume *lv, int iso_mode); |
| char *lv_removal_time_dup(struct dm_pool *mem, const struct logical_volume *lv, int iso_mode); |
| char *lv_host_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_active_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_profile_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lv_lock_args_dup(struct dm_pool *mem, const struct logical_volume *lv); |
| char *lvseg_kernel_discards_dup_with_info_and_seg_status(struct dm_pool *mem, const struct lv_with_info_and_seg_status *lvdm); |
| char *lv_time_dup(struct dm_pool *mem, const struct logical_volume *lv, int iso_mode); |
| |
| typedef enum { |
| PERCENT_GET_DATA = 0, |
| PERCENT_GET_METADATA, |
| PERCENT_GET_DIRTY |
| } percent_get_t; |
| dm_percent_t lvseg_percent_with_info_and_seg_status(const struct lv_with_info_and_seg_status *lvdm, |
| percent_get_t type); |
| |
| #endif /* _LVM_LV_H */ |