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8df1e265f8
Code adds better support for monitoring of thin pool devices. update_pool_lv uses DMEVENTD_MONITOR_IGNORE to not manipulate with monitoring. vgchange & lvchange are checking real thin pool device for existance as we are using _tpool real device and visible LV pool device might not be even active (_tpool is activated implicitely for any thin volume). monitor_dev_for_events is another _lv_postorder like code it might be worth to think about reusing it here - for now update the code to properly monitory thin volume deps. For unmonitoring add extra code to check the usage of thin pool - in case it's in use unmonitoring of thin volume is skipped.
160 lines
5.5 KiB
C
160 lines
5.5 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_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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