/* $NetBSD: clvm.h,v 1.1.1.2 2009/12/02 00:25:39 haad Exp $ */ /* * Copyright (C) 2002-2004 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 General Public License v.2. * * You should have received a copy of the GNU 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 */ /* Definitions for CLVMD server and clients */ /* * The protocol spoken over the cluster and across the local socket. */ #ifndef _CLVM_H #define _CLVM_H struct clvm_header { uint8_t cmd; /* See below */ uint8_t flags; /* See below */ uint16_t xid; /* Transaction ID */ uint32_t clientid; /* Only used in Daemon->Daemon comms */ int32_t status; /* For replies, whether request succeeded */ uint32_t arglen; /* Length of argument below. If >1500 then it will be passed around the cluster in the system LV */ char node[1]; /* Actually a NUL-terminated string, node name. If this is empty then the command is forwarded to all cluster nodes unless FLAG_LOCAL is also set. */ char args[1]; /* Arguments for the command follow the node name, This member is only valid if the node name is empty */ } __attribute__ ((packed)); /* Flags */ #define CLVMD_FLAG_LOCAL 1 /* Only do this on the local node */ #define CLVMD_FLAG_SYSTEMLV 2 /* Data in system LV under my node name */ #define CLVMD_FLAG_NODEERRS 4 /* Reply has errors in node-specific portion */ /* Name of the local socket to communicate between libclvm and clvmd */ //static const char CLVMD_SOCKNAME[]="/var/run/clvmd"; static const char CLVMD_SOCKNAME[] = "\0clvmd"; /* Internal commands & replies */ #define CLVMD_CMD_REPLY 1 #define CLVMD_CMD_VERSION 2 /* Send version around cluster when we start */ #define CLVMD_CMD_GOAWAY 3 /* Die if received this - we are running an incompatible version */ #define CLVMD_CMD_TEST 4 /* Just for mucking about */ #define CLVMD_CMD_LOCK 30 #define CLVMD_CMD_UNLOCK 31 /* Lock/Unlock commands */ #define CLVMD_CMD_LOCK_LV 50 #define CLVMD_CMD_LOCK_VG 51 #define CLVMD_CMD_LOCK_QUERY 52 /* Misc functions */ #define CLVMD_CMD_REFRESH 40 #define CLVMD_CMD_GET_CLUSTERNAME 41 #define CLVMD_CMD_SET_DEBUG 42 #define CLVMD_CMD_VG_BACKUP 43 #endif |