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95ced7a7be
Define an 'activation_handler' that gets called automatically on
PV appearance/disappearance while processing the lvmetad_pv_found
and lvmetad_pv_gone functions that are supposed to update the
lvmetad state based on PV availability state. For now, the actual
support is for PV appearance only, leaving room for PV disappearance
support as well (which is a more complex problem to solve as this
needs to count with possible device stack).
Add a new activation change mode - CHANGE_AAY exposed as
'--activate ay/-aay' argument ('activate automatically').
Factor out the vgchange activation functionality for use in other
tools (like pvscan...).
168 lines
5.8 KiB
C
168 lines
5.8 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef LVM_ACTIVATE_H
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#define LVM_ACTIVATE_H
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#include "metadata-exported.h"
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struct lvinfo {
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int exists;
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int suspended;
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unsigned int open_count;
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int major;
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int minor;
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int read_only;
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int live_table;
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int inactive_table;
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uint32_t read_ahead;
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};
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struct lv_activate_opts {
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int exclusive;
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int origin_only;
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int no_merging;
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int real_pool;
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int is_activate;
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int skip_in_use;
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unsigned revert;
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unsigned read_only;
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};
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/* target attribute flags */
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#define MIRROR_LOG_CLUSTERED 0x00000001U
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void set_activation(int activation);
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int activation(void);
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int driver_version(char *version, size_t size);
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int library_version(char *version, size_t size);
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int lvm1_present(struct cmd_context *cmd);
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int module_present(struct cmd_context *cmd, const char *target_name);
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int target_present(struct cmd_context *cmd, const char *target_name,
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int use_modprobe);
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int target_version(const char *target_name, uint32_t *maj,
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uint32_t *min, uint32_t *patchlevel);
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int lvm_dm_prefix_check(int major, int minor, const char *prefix);
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int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
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struct dm_list *modules);
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int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
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struct dm_list *modules);
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void activation_release(void);
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void activation_exit(void);
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/* int lv_suspend(struct cmd_context *cmd, const char *lvid_s); */
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int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only, unsigned exclusive);
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int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
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int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
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unsigned origin_only, unsigned exclusive, unsigned revert);
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int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
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int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
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int exclusive);
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int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
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int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
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/*
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* Returns 1 if info structure has been populated, else 0.
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*/
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int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_layer,
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struct lvinfo *info, int with_open_count, int with_read_ahead);
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int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, int use_layer,
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struct lvinfo *info, int with_open_count, int with_read_ahead);
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int lv_check_not_in_use(struct cmd_context *cmd, struct logical_volume *lv,
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struct lvinfo *info);
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/*
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* Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
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*/
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int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
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int *activate_lv);
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int lv_passes_volumes_filter(struct cmd_context *cmd, struct logical_volume *lv,
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const struct dm_config_node *cn, const char *config_path);
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/*
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* Checks against the auto_activation_volume_list and
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* returns 1 if the LV should be activated, 0 otherwise.
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*/
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int lv_passes_auto_activation_filter(struct cmd_context *cmd, struct logical_volume *lv);
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int lv_check_transient(struct logical_volume *lv);
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/*
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* Returns 1 if percent has been set, else 0.
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*/
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int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent);
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int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
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int wait, percent_t *percent, uint32_t *event_nr);
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int lv_raid_percent(const struct logical_volume *lv, percent_t *percent);
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int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
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percent_t *percent);
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int lv_thin_percent(const struct logical_volume *lv, int mapped,
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percent_t *percent);
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int lv_thin_pool_transaction_id(const struct logical_volume *lv,
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uint64_t *transaction_id);
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/*
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* Return number of LVs in the VG that are active.
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*/
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int lvs_in_vg_activated(const struct volume_group *vg);
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int lvs_in_vg_opened(const struct volume_group *vg);
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int lv_is_active(const struct logical_volume *lv);
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int lv_is_active_but_not_locally(const struct logical_volume *lv);
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int lv_is_active_exclusive(const struct logical_volume *lv);
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int lv_is_active_exclusive_locally(const struct logical_volume *lv);
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int lv_is_active_exclusive_remotely(const struct logical_volume *lv);
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int lv_has_target_type(struct dm_pool *mem, struct logical_volume *lv,
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const char *layer, const char *target_type);
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int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv,
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const struct lv_activate_opts *laopts, int do_reg);
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#ifdef DMEVENTD
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# include "libdevmapper-event.h"
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char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath);
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int target_registered_with_dmeventd(struct cmd_context *cmd, const char *libpath,
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struct logical_volume *lv, int *pending);
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int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv,
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int evmask __attribute__((unused)), int set, int timeout);
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#endif
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int add_linear_area_to_dtree(struct dm_tree_node *node, uint64_t size,
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uint32_t extent_size, int use_linear_target,
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const char *vgname, const char *lvname);
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/*
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* Returns 1 if PV has a dependency tree that uses anything in VG.
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*/
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int pv_uses_vg(struct physical_volume *pv,
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struct volume_group *vg);
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/*
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* Returns 1 if mapped device is not suspended.
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*/
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int device_is_usable(struct device *dev);
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/*
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* Declaration moved here from fs.h to keep header fs.h hidden
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*/
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void fs_unlock(void);
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#endif
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