rf_status.c

RAIDFrame是个非常好的磁盘阵列RAID仿真工具

/*
 * rf_status.c
 */
/*
 * Jim Zelenka, CMU/SCS, 2 May 1996
 *
 * Get status of an array, and its disks
 */

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include "rf_types.h"
#include "rf_raid.h"
#include "rf_disks.h"
#include "rf_raidframe.h"

char *progname;
char *devname = "/dev/rraidframe_c";

static void usage()
{
	fprintf(stderr, "USAGE: %s [device_name]\n", progname);
	fflush(stderr);
	exit(1);
}

#define CASESTR(_c_) case rf_ds_##_c_ : strcpy(str,#_c_); break;

static char *statusstr(status)
  RF_DiskStatus_t  status;
{
	static char str[512];

	switch(status) {
		CASESTR(optimal);
		CASESTR(failed);
		CASESTR(reconstructing);
		CASESTR(dist_spared);
		CASESTR(spared);
		CASESTR(spare);
		CASESTR(used_spare);
		default:
			sprintf(str, "Unknown status %d", (int)status);
	}
	return(str);
}

static void show_disk(dp)
  RF_RaidDisk_t  *dp;
{
	printf("%20s: %s\n", dp->devname, statusstr(dp->status));
}

static void show_spare(dp)
  RF_RaidDisk_t  *dp;
{
	printf("%20s [%d][%d]: %s\n", dp->devname, dp->spareRow, dp->spareCol,
			statusstr(dp->status));
}

main(argc, argv)
  int     argc;
  char  **argv;
{
	RF_DeviceConfig_t rfcfg, *cfg;
	int fd, rc, i, j;

	progname = argv[0];
	if (argc > 1) {
		if (argc != 2)
			usage();
		devname = argv[1];
	}

	fd = open(devname, O_RDWR);
	if (fd < 0) {
		perror(devname);
		exit(1);
	}

	cfg = &rfcfg;
	rc = ioctl(fd, RAIDFRAME_GET_INFO, &cfg);
	if (rc) {
		perror("RAIDFRAME_GET_INFO");
		exit(1);
	}
	printf("Devices:\n");
	for(i=0;i<rfcfg.ndevs;i++) {
		show_disk(&rfcfg.devs[i]);
	}
	if (rfcfg.nspares > 0) {
		printf("Spares:\n");
		for(i=0;i<rfcfg.nspares;i++) {
			show_spare(&rfcfg.spares[i]);
		}
	}

	exit(0);
}