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/*
* Copyright (C) 2014 Red Hat, Inc.
*
* 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.
*/
#ifndef _LVM_LVMLOCKD_CLIENT_H
#define _LVM_LVMLOCKD_CLIENT_H
#include "daemon-client.h"
#define LVMLOCKD_SOCKET DEFAULT_RUN_DIR "/lvmlockd.socket"
/* Wrappers to open/close connection */
static inline daemon_handle lvmlockd_open(const char *socket)
{
daemon_info lvmlockd_info = {
.path = "lvmlockd",
.socket = socket ?: LVMLOCKD_SOCKET,
.protocol = "lvmlockd",
.protocol_version = 1,
.autostart = 0
};
return daemon_open(lvmlockd_info);
}
static inline void lvmlockd_close(daemon_handle h)
{
return daemon_close(h);
}
/*
* Errors returned as the lvmlockd result value.
*/
#define ENOLS 210 /* lockspace not found */
#define ELOCALVG 211 /* vg is local */
#define EOTHERVG 212 /* vg sysid specifies other host */
#define ESTARTING 213 /* lockspace is starting */
/*
* Also see lvmlockd-sanlock GL_LOCK_BEGIN, VG_LOCK_BEGIN, LV_LOCK_BEGIN.
* gl lock at sanlock lease area 65
* vg lock at sanlock lease area 66
* lv locks begin at sanlock lease area 67
*
* LV_LOCK_BEGIN + MAX_LVS_IN_VG = sanlock lease areas required
* with 512 byte sectors, each lease area is 1MB
* with 4k byte sectors, each lease area is 8MB (use this for sizing)
*
* 66+190 = 256 sanlock lease areas,
* so we need 256 * 8MB = 2GB lock lv size to hold 190 lv leases.
*/
#define LVMLOCKD_SANLOCK_MAX_LVS_IN_VG 190
#define LVMLOCKD_SANLOCK_LV_SIZE 2147483648 /* 2GB */
#endif
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