mirror of
https://github.com/systemd/systemd.git
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4081da7fe5
incremental to 20031220,
2003-12-22 multipath-010
* don't print .sg_dev if equal to .dev (2.6) in print_path()
* since the kernel code handles defective paths, remove all
code to cope with them :
* move do_tur() to unused.c
* remove .state from path struct
* remove .state settings & conditionals
* add a cmdline switch to force maps to failover mode,
ie 1 path per priority group
* add default policies to the whitelist array (spread io ==
MULTIBUS / io forced to 1 path == FAILOVER)
* move get_disk_size() call out of add_map() to coalesce()
* comment tricky coalesce() fn
* bogus unsused.c file renamed to unused.c
129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
/*
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* Soft: Description here...
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*
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* Version: $Id: main.h,v 0.0.1 2003/09/18 15:13:38 cvaroqui Exp $
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*
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* Author: Copyright (C) 2003 Christophe Varoqui
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _MAIN_H
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#define _MAIN_H
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/* local includes */
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#include "sg_include.h"
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/* exerpt from "sg_err.h" */
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#define SCSI_CHECK_CONDITION 0x2
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#define SCSI_COMMAND_TERMINATED 0x22
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#define SG_ERR_DRIVER_SENSE 0x08
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/* exerpt from "scsi.h" */
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#define RECOVERED_ERROR 0x01
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#define SCSI_IOCTL_GET_IDLUN 0x5382
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#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
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/* global defs */
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#define WWID_SIZE 33
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#define MAX_DEVS 128
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#define MAX_MP MAX_DEVS / 2
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#define MAX_MP_PATHS MAX_DEVS / 4
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#define FILE_NAME_SIZE 256
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#define INQUIRY_CMDLEN 6
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#define INQUIRY_CMD 0x12
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#define SENSE_BUFF_LEN 32
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#define DEF_TIMEOUT 60000
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#define EBUFF_SZ 256
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#define TUR_CMD_LEN 6
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#define MX_ALLOC_LEN 255
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#define BLKGETSIZE _IO(0x12,96)
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#define DM_TARGET "multipath"
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/* Storage controlers cpabilities */
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#define FAILOVER 0
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#define MULTIBUS 1
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#define PINDEX(x,y) mp[(x)].pindex[(y)]
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/* global types */
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struct scsi_idlun {
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int dev_id;
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int host_unique_id;
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int host_no;
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};
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struct sg_id {
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int host_no;
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int channel;
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int scsi_id;
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int lun;
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int scsi_type;
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short h_cmd_per_lun;
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short d_queue_depth;
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int unused1;
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int unused2;
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};
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struct scsi_dev {
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char dev[FILE_NAME_SIZE];
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struct scsi_idlun scsi_id;
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int host_no;
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};
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struct path {
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char dev[FILE_NAME_SIZE];
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char sg_dev[FILE_NAME_SIZE];
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struct scsi_idlun scsi_id;
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struct sg_id sg_id;
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char wwid[WWID_SIZE];
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char vendor_id[8];
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char product_id[16];
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char rev[4];
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int iopolicy;
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};
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struct multipath {
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char wwid[WWID_SIZE];
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int npaths;
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long size;
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int pindex[MAX_MP_PATHS];
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};
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struct env {
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int max_devs;
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int verbose;
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int quiet;
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int dry_run;
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int forcedfailover;
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int with_sysfs;
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int dm_path_test_int;
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char sysfs_path[FILE_NAME_SIZE];
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char hotplugdev[FILE_NAME_SIZE];
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};
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/* Build version */
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#define PROG "multipath"
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#define VERSION_CODE 0x000010
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#define DATE_CODE 0x0C1503
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#define MULTIPATH_VERSION(version) \
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(version >> 16) & 0xFF, \
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(version >> 8) & 0xFF, \
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version & 0xFF
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#define VERSION_STRING PROG" v%d.%d.%d (%.2d/%.2d, 20%.2d)\n", \
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MULTIPATH_VERSION(VERSION_CODE), \
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MULTIPATH_VERSION(DATE_CODE)
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#endif
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