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lvm2/lib/label/hints.h
David Teigland 6620dc9475 add device hints to reduce scanning
Save the list of PVs in /run/lvm/hints.  These hints
are used to reduce scanning in a number of commands
to only the PVs on the system, or only the PVs in a
requested VG (rather than all devices on the system.)
2019-01-15 10:23:47 -06:00

38 lines
1.1 KiB
C

/*
* Copyright (C) 2004-2018 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_HINTS_H
#define _LVM_HINTS_H
struct hint {
struct dm_list list;
char name[PATH_MAX];
char pvid[ID_LEN + 1];
char vgname[NAME_LEN];
dev_t devt;
unsigned chosen:1; /* this hint's dev was chosen for scanning */
};
int write_hint_file(struct cmd_context *cmd, int newhints);
void clear_hint_file(struct cmd_context *cmd);
int get_hints(struct cmd_context *cmd, struct dm_list *hints, int *newhints,
struct dm_list *devs_in, struct dm_list *devs_out);
int validate_hints(struct cmd_context *cmd, struct dm_list *hints);
#endif