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5ca6698f12
Handles non-clustered as well as clustered. For clustered, the best we can do is try exclusive local activation. If this succeeds, we know it is not active elsewhere in the cluster. Otherwise, we assume it is active elsewhere.
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 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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/* 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(const char *target_name);
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int target_present(const char *target_name, 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 list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
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struct list *modules);
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int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
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struct 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);
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int lv_resume(struct cmd_context *cmd, const char *lvid_s);
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int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s);
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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, struct lvinfo *info,
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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,
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struct lvinfo *info, int with_open_count, int with_read_ahead);
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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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/*
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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, float *percent);
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int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
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int wait, float *percent, uint32_t *event_nr);
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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(struct volume_group *vg);
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int lvs_in_vg_activated_by_uuid_only(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(struct logical_volume *lv);
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int monitor_dev_for_events(struct cmd_context *cmd,
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struct logical_volume *lv, int do_reg);
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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(dev_t dev);
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#endif
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