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lvm2/lib/device/device_id.h
David Teigland 212b1fc529 devices: exclude multipath components based on matching wwid
If multipath component devices get through the filter and
cause lvm to see duplicate PVs, then check the wwid of the
devs and drop the component devices as if they had been
filtered.  If a dm mpath device was found among the duplicates
then use that as the PV, otherwise do not use any of the
components as the PV.

"duplicate PVs" associated with multipath configs will no
longer stop commands from working.
2021-11-18 17:41:00 -06:00

62 lines
2.9 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2007 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_DEVICE_ID_H
#define _LVM_DEVICE_ID_H
void free_du(struct dev_use *du);
void free_dus(struct dm_list *list);
void free_did(struct dev_id *did);
void free_dids(struct dm_list *list);
const char *idtype_to_str(uint16_t idtype);
uint16_t idtype_from_str(const char *str);
const char *dev_idtype_for_metadata(struct cmd_context *cmd, struct device *dev);
const char *dev_idname_for_metadata(struct cmd_context *cmd, struct device *dev);
int device_ids_use_devname(struct cmd_context *cmd);
int device_ids_read(struct cmd_context *cmd);
int device_ids_write(struct cmd_context *cmd);
int device_id_add(struct cmd_context *cmd, struct device *dev, const char *pvid,
const char *idtype_arg, const char *id_arg);
void device_id_pvremove(struct cmd_context *cmd, struct device *dev);
void device_ids_match(struct cmd_context *cmd);
int device_ids_match_dev(struct cmd_context *cmd, struct device *dev);
void device_ids_match_device_list(struct cmd_context *cmd);
void device_ids_validate(struct cmd_context *cmd, struct dm_list *scanned_devs, int *device_ids_invalid, int noupdate);
int device_ids_version_unchanged(struct cmd_context *cmd);
void device_ids_find_renamed_devs(struct cmd_context *cmd, struct dm_list *dev_list, int *search_count, int noupdate);
const char *device_id_system_read(struct cmd_context *cmd, struct device *dev, uint16_t idtype);
void device_id_update_vg_uuid(struct cmd_context *cmd, struct volume_group *vg, struct id *old_vg_id);
struct dev_use *get_du_for_dev(struct cmd_context *cmd, struct device *dev);
struct dev_use *get_du_for_pvid(struct cmd_context *cmd, const char *pvid);
char *devices_file_version(void);
int devices_file_exists(struct cmd_context *cmd);
int devices_file_touch(struct cmd_context *cmd);
int lock_devices_file(struct cmd_context *cmd, int mode);
int lock_devices_file_try(struct cmd_context *cmd, int mode, int *held);
void unlock_devices_file(struct cmd_context *cmd);
void devices_file_init(struct cmd_context *cmd);
void devices_file_exit(struct cmd_context *cmd);
void unlink_searched_devnames(struct cmd_context *cmd);
int read_sys_block(struct cmd_context *cmd, struct device *dev, const char *suffix, char *sysbuf, int sysbufsize);
int dev_has_mpath_uuid(struct cmd_context *cmd, struct device *dev, const char **idname_out);
#endif