mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-23 21:35:29 +03:00
38444f0f13
Mirrors used to be created by first creating a linear device and then adding the other images plus the log. Now mirrors are created by creating all the images in one go and then adding the log separately. The new way ran into the condition that cluster mirrors cannot change the log type (in the case of creation, from core -> disk) while the mirror is not active. (It isn't active because it is in the process of being created.) The reason this condition is in place is because a remote node may have the mirror active, and we don't want to alter the log underneath it. What we really needed was a way of checking if the mirror was active remotely but not locally, and in that case do not allow a change of the log. I've added this check, and cluster mirrors can now be created again.
140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2011 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef LVM_ACTIVATE_H
|
|
#define LVM_ACTIVATE_H
|
|
|
|
#include "metadata-exported.h"
|
|
|
|
struct lvinfo {
|
|
int exists;
|
|
int suspended;
|
|
unsigned int open_count;
|
|
int major;
|
|
int minor;
|
|
int read_only;
|
|
int live_table;
|
|
int inactive_table;
|
|
uint32_t read_ahead;
|
|
};
|
|
|
|
struct lv_activate_opts {
|
|
int exclusive;
|
|
int origin_only;
|
|
int no_merging;
|
|
};
|
|
|
|
/* target attribute flags */
|
|
#define MIRROR_LOG_CLUSTERED 0x00000001U
|
|
|
|
void set_activation(int activation);
|
|
int activation(void);
|
|
|
|
int driver_version(char *version, size_t size);
|
|
int library_version(char *version, size_t size);
|
|
int lvm1_present(struct cmd_context *cmd);
|
|
|
|
int module_present(struct cmd_context *cmd, const char *target_name);
|
|
int target_present(struct cmd_context *cmd, const char *target_name,
|
|
int use_modprobe);
|
|
int target_version(const char *target_name, uint32_t *maj,
|
|
uint32_t *min, uint32_t *patchlevel);
|
|
int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
|
|
struct dm_list *modules);
|
|
int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
|
|
struct dm_list *modules);
|
|
|
|
void activation_release(void);
|
|
void activation_exit(void);
|
|
|
|
/* int lv_suspend(struct cmd_context *cmd, const char *lvid_s); */
|
|
int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
|
|
int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
|
|
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
|
|
unsigned origin_only, unsigned exclusive);
|
|
int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
|
|
int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
|
|
int exclusive);
|
|
int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
|
|
|
|
int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
|
|
|
|
/*
|
|
* Returns 1 if info structure has been populated, else 0.
|
|
*/
|
|
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv,
|
|
unsigned origin_only, struct lvinfo *info,
|
|
int with_open_count, int with_read_ahead);
|
|
int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only,
|
|
struct lvinfo *info, int with_open_count, int with_read_ahead);
|
|
|
|
/*
|
|
* Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
|
|
*/
|
|
int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
|
|
int *activate_lv);
|
|
|
|
int lv_check_transient(struct logical_volume *lv);
|
|
/*
|
|
* Returns 1 if percent has been set, else 0.
|
|
*/
|
|
int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent);
|
|
int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
|
|
int wait, percent_t *percent, uint32_t *event_nr);
|
|
|
|
/*
|
|
* Return number of LVs in the VG that are active.
|
|
*/
|
|
int lvs_in_vg_activated(struct volume_group *vg);
|
|
int lvs_in_vg_opened(const struct volume_group *vg);
|
|
|
|
int lv_is_active(struct logical_volume *lv);
|
|
int lv_is_active_but_not_locally(struct logical_volume *lv);
|
|
int lv_is_active_exclusive_locally(struct logical_volume *lv);
|
|
int lv_is_active_exclusive_remotely(struct logical_volume *lv);
|
|
|
|
int lv_has_target_type(struct dm_pool *mem, struct logical_volume *lv,
|
|
const char *layer, const char *target_type);
|
|
|
|
int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv,
|
|
const struct lv_activate_opts *laopts, int do_reg);
|
|
|
|
#ifdef DMEVENTD
|
|
# include "libdevmapper-event.h"
|
|
char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath);
|
|
int target_registered_with_dmeventd(struct cmd_context *cmd, const char *libpath,
|
|
struct logical_volume *lv, int *pending);
|
|
int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv,
|
|
int evmask __attribute__((unused)), int set, int timeout);
|
|
#endif
|
|
|
|
/*
|
|
* Returns 1 if PV has a dependency tree that uses anything in VG.
|
|
*/
|
|
int pv_uses_vg(struct physical_volume *pv,
|
|
struct volume_group *vg);
|
|
|
|
/*
|
|
* Returns 1 if mapped device is not suspended.
|
|
*/
|
|
int device_is_usable(struct device *dev);
|
|
|
|
/*
|
|
* Declaration moved here from fs.h to keep header fs.h hidden
|
|
*/
|
|
void fs_unlock(void);
|
|
|
|
#endif
|