[thirdparty/mdadm.git] / Detail.c

/*
 * mdadm - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
 *
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    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
 *
 *    Author: Neil Brown
 *    Email: <neilb@cse.unsw.edu.au>
 *    Paper: Neil Brown
 *           School of Computer Science and Engineering
 *           The University of New South Wales
 *           Sydney, 2052
 *           Australia
 */

#include	"mdadm.h"
#include	"md_p.h"
#include	"md_u.h"

int Detail(char *dev, int brief, int test)
{
	/*
	 * Print out details for an md array by using
	 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
	 */

	int fd = open(dev, O_RDONLY, 0);
	int vers;
	mdu_array_info_t array;
	int d;
	time_t atime;
	char *c;
	char *devices = NULL;
	int spares = 0;
	struct stat stb;

	mdp_super_t super;
	int have_super = 0;
	int rv = test ? 4 : 1;

	if (fd < 0) {
		fprintf(stderr, Name ": cannot open %s: %s\n",
			dev, strerror(errno));
		return rv;
	}
	vers = md_get_version(fd);
	if (vers < 0) {
		fprintf(stderr, Name ": %s does not appear to be an md device\n",
			dev);
		close(fd);
		return rv;
	}
	if (vers < 9000) {
		fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
			dev);
		close(fd);
		return rv;
	}
	if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
		if (errno == ENODEV)
			fprintf(stderr, Name ": md device %s does not appear to be active.\n",
				dev);
		else
			fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
				dev, strerror(errno));
		close(fd);
		return rv;
	}
	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
		stb.st_rdev = 0;
	rv = 0;
	/* Ok, we have some info to print... */
	c = map_num(pers, array.level);
	if (brief) 
		printf("ARRAY %s level=%s num-devices=%d", dev, c?c:"-unknown-",array.raid_disks );
	else {
		unsigned long array_size;
		unsigned long long larray_size;
		struct mdstat_ent *ms = mdstat_read(0);
		struct mdstat_ent *e;
		int devnum = array.md_minor;
		if (MAJOR(stb.st_rdev) != MD_MAJOR)
			devnum = -1 - devnum;

		for (e=ms; e; e=e->next)
			if (e->devnum == devnum)
				break;
#ifdef BLKGETSIZE64
		if (ioctl(fd, BLKGETSIZE64, &larray_size)==0)
			;
		else
#endif
			if (ioctl(fd, BLKGETSIZE, &array_size)==0) {
				larray_size = array_size;
				larray_size <<= 9;
			}
		
		else larray_size = 0;

		printf("%s:\n", dev);
		printf("        Version : %02d.%02d.%02d\n",
		       array.major_version, array.minor_version, array.patch_version);
		atime = array.ctime;
		printf("  Creation Time : %.24s\n", ctime(&atime));
		printf("     Raid Level : %s\n", c?c:"-unknown-");
		if (larray_size)
			printf("     Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
		if (array.level >= 1)
			printf("    Device Size : %d%s\n", array.size, human_size((long long)array.size<<10));
		printf("   Raid Devices : %d\n", array.raid_disks);
		printf("  Total Devices : %d\n", array.nr_disks);
		printf("Preferred Minor : %d\n", array.md_minor);
		printf("    Persistence : Superblock is %spersistent\n",
		       array.not_persistent?"not ":"");
		printf("\n");
		atime = array.utime;
		printf("    Update Time : %.24s\n", ctime(&atime));
		printf("          State : %s%s%s\n",
		       (array.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
		       array.active_disks < array.raid_disks? ", degraded":"",
		       (e && e->percent >= 0) ? ", recovering": "");
		printf(" Active Devices : %d\n", array.active_disks);
		printf("Working Devices : %d\n", array.working_disks);
		printf(" Failed Devices : %d\n", array.failed_disks);
		printf("  Spare Devices : %d\n", array.spare_disks);
		printf("\n");
		if (array.level == 5) {
			c = map_num(r5layout, array.layout);
			printf("         Layout : %s\n", c?c:"-unknown-");
		}
		switch (array.level) {
		case 0:
		case 4:
		case 5:
			printf("     Chunk Size : %dK\n", array.chunk_size/1024);
			break;
		case -1:
			printf("       Rounding : %dK\n", array.chunk_size/1024);
			break;
		default: break;
		}
	
		printf("\n");

		if (e && e->percent >= 0)
			printf(" Rebuild Status : %d%% complete\n\n", e->percent);
		free_mdstat(ms);

		printf("    Number   Major   Minor   RaidDevice State\n");
	}
	for (d= 0; d<MD_SB_DISKS; d++) {
		mdu_disk_info_t disk;
		char *dv;
		disk.number = d;
		if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
			if (d < array.raid_disks)
				fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
					d, strerror(errno));
			continue;
		}
		if (d >= array.raid_disks &&
		    disk.major == 0 &&
		    disk.minor == 0)
			continue;
		if (!brief) {
			printf("   %5d   %5d    %5d    %5d     ", 
			       disk.number, disk.major, disk.minor, disk.raid_disk);
			if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty");
			if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
			if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
			if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
			if (disk.state == 0) { printf(" spare"); spares++; }
		}
		if (test && d < array.raid_disks && disk.state & (1<<MD_DISK_FAULTY)) {
			if ((rv & 1) && (array.level ==4 || array.level == 5))
				rv |= 2;
			rv |= 1;
		}
		if ((dv=map_dev(disk.major, disk.minor))) {
			if (brief) {
				if (devices) {
					devices = realloc(devices,
							  strlen(devices)+1+strlen(dv)+1);
					strcat(strcat(devices,","),dv);
				} else
					devices = strdup(dv);
			} else
				printf("   %s", dv);
			if (!have_super && (disk.state & (1<<MD_DISK_ACTIVE))) {
				/* try to read the superblock from this device
				 * to get more info
				 */
				int fd = open(dv, O_RDONLY);
				if (fd >=0 &&
				    load_super(fd, &super) ==0 &&
				    (unsigned long)super.ctime == (unsigned long)array.ctime &&
				    (unsigned int)super.level == (unsigned int)array.level)
					have_super = 1;
			}
		}
		if (!brief) printf("\n");
	}
	if (spares && brief) printf(" spares=%d", spares);
	if (have_super) {
		if (brief) printf(" UUID=");
		else printf("           UUID : ");
	    	if (super.minor_version >= 90)
			printf("%08x:%08x:%08x:%08x", super.set_uuid0, super.set_uuid1,
			       super.set_uuid2, super.set_uuid3);
		else
			printf("%08x", super.set_uuid0);
		if (!brief) 
			printf("\n         Events : %d.%d\n", super.events_hi, super.events_lo);
	}
	if (brief && devices) printf("\n   devices=%s", devices);
	if (brief) printf("\n");
	if (test && (rv&2)) rv &= ~1;
	return rv;
}
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
cd29a5c8	4	* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
64c4757e NB	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* Author: Neil Brown
	22	* Email: <neilb@cse.unsw.edu.au>
	23	* Paper: Neil Brown
	24	* School of Computer Science and Engineering
	25	* The University of New South Wales
	26	* Sydney, 2052
	27	* Australia
	28	*/
	29
9a9dab36	30	#include "mdadm.h"
64c4757e NB	31	#include "md_p.h"
	32	#include "md_u.h"
	33
feb716e9	34	int Detail(char *dev, int brief, int test)
64c4757e NB	35	{
	36	/*
	37	* Print out details for an md array by using
	38	* GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
	39	*/
	40
	41	int fd = open(dev, O_RDONLY, 0);
	42	int vers;
	43	mdu_array_info_t array;
	44	int d;
	45	time_t atime;
682c7051	46	char *c;
d013a55e	47	char *devices = NULL;
feb716e9	48	int spares = 0;
dd0781e5	49	struct stat stb;
64c4757e	50
82b27616 NB	51	mdp_super_t super;
82b27616 NB	52	int have_super = 0;
feb716e9	53	int rv = test ? 4 : 1;
82b27616	54
64c4757e	55	if (fd < 0) {
682c7051	56	fprintf(stderr, Name ": cannot open %s: %s\n",
64c4757e	57	dev, strerror(errno));
feb716e9	58	return rv;
64c4757e NB	59	}
	60	vers = md_get_version(fd);
	61	if (vers < 0) {
682c7051	62	fprintf(stderr, Name ": %s does not appear to be an md device\n",
64c4757e NB	63	dev);
64c4757e NB	64	close(fd);
feb716e9	65	return rv;
64c4757e	66	}
682c7051 NB	67	if (vers < 9000) {
682c7051 NB	68	fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
64c4757e NB	69	dev);
64c4757e NB	70	close(fd);
feb716e9	71	return rv;
64c4757e NB	72	}
	73	if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
	74	if (errno == ENODEV)
682c7051	75	fprintf(stderr, Name ": md device %s does not appear to be active.\n",
64c4757e NB	76	dev);
64c4757e NB	77	else
682c7051	78	fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
64c4757e NB	79	dev, strerror(errno));
64c4757e NB	80	close(fd);
feb716e9	81	return rv;
64c4757e	82	}
dd0781e5 NB	83	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
dd0781e5 NB	84	stb.st_rdev = 0;
feb716e9	85	rv = 0;
64c4757e	86	/* Ok, we have some info to print... */
682c7051	87	c = map_num(pers, array.level);
cd29a5c8	88	if (brief)
b83d95f3	89	printf("ARRAY %s level=%s num-devices=%d", dev, c?c:"-unknown-",array.raid_disks );
cd29a5c8	90	else {
e0d19036 NB	91	unsigned long array_size;
e0d19036 NB	92	unsigned long long larray_size;
dd0781e5 NB	93	struct mdstat_ent *ms = mdstat_read(0);
	94	struct mdstat_ent *e;
	95	int devnum = array.md_minor;
	96	if (MAJOR(stb.st_rdev) != MD_MAJOR)
	97	devnum = -1 - devnum;
	98
	99	for (e=ms; e; e=e->next)
	100	if (e->devnum == devnum)
	101	break;
11a3e71d	102	#ifdef BLKGETSIZE64
56eb10c0 NB	103	if (ioctl(fd, BLKGETSIZE64, &larray_size)==0)
56eb10c0 NB	104	;
11a3e71d NB	105	else
11a3e71d NB	106	#endif
b83d95f3 NB	107	if (ioctl(fd, BLKGETSIZE, &array_size)==0) {
	108	larray_size = array_size;
	109	larray_size <<= 9;
	110	}
	111
56eb10c0 NB	112	else larray_size = 0;
56eb10c0 NB	113
cd29a5c8 NB	114	printf("%s:\n", dev);
	115	printf(" Version : %02d.%02d.%02d\n",
	116	array.major_version, array.minor_version, array.patch_version);
	117	atime = array.ctime;
	118	printf(" Creation Time : %.24s\n", ctime(&atime));
	119	printf(" Raid Level : %s\n", c?c:"-unknown-");
56eb10c0	120	if (larray_size)
dd0781e5	121	printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
cd29a5c8	122	if (array.level >= 1)
56eb10c0	123	printf(" Device Size : %d%s\n", array.size, human_size((long long)array.size<<10));
b83d95f3 NB	124	printf(" Raid Devices : %d\n", array.raid_disks);
b83d95f3 NB	125	printf(" Total Devices : %d\n", array.nr_disks);
cd29a5c8	126	printf("Preferred Minor : %d\n", array.md_minor);
b83d95f3	127	printf(" Persistence : Superblock is %spersistent\n",
cd29a5c8 NB	128	array.not_persistent?"not ":"");
	129	printf("\n");
	130	atime = array.utime;
	131	printf(" Update Time : %.24s\n", ctime(&atime));
dd0781e5	132	printf(" State : %s%s%s\n",
cd29a5c8	133	(array.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
dd0781e5 NB	134	array.active_disks < array.raid_disks? ", degraded":"",
dd0781e5 NB	135	(e && e->percent >= 0) ? ", recovering": "");
b83d95f3 NB	136	printf(" Active Devices : %d\n", array.active_disks);
	137	printf("Working Devices : %d\n", array.working_disks);
	138	printf(" Failed Devices : %d\n", array.failed_disks);
	139	printf(" Spare Devices : %d\n", array.spare_disks);
cd29a5c8 NB	140	printf("\n");
	141	if (array.level == 5) {
	142	c = map_num(r5layout, array.layout);
	143	printf(" Layout : %s\n", c?c:"-unknown-");
	144	}
	145	switch (array.level) {
	146	case 0:
	147	case 4:
	148	case 5:
	149	printf(" Chunk Size : %dK\n", array.chunk_size/1024);
	150	break;
	151	case -1:
	152	printf(" Rounding : %dK\n", array.chunk_size/1024);
	153	break;
	154	default: break;
	155	}
82b27616	156
cd29a5c8	157	printf("\n");
dd0781e5 NB	158
	159	if (e && e->percent >= 0)
	160	printf(" Rebuild Status : %d%% complete\n\n", e->percent);
	161	free_mdstat(ms);
	162
b83d95f3	163	printf(" Number Major Minor RaidDevice State\n");
cd29a5c8	164	}
e0d19036	165	for (d= 0; d<MD_SB_DISKS; d++) {
64c4757e	166	mdu_disk_info_t disk;
82b27616	167	char *dv;
64c4757e NB	168	disk.number = d;
64c4757e NB	169	if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
e0d19036	170	if (d < array.raid_disks)
b83d95f3	171	fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
e0d19036	172	d, strerror(errno));
64c4757e NB	173	continue;
64c4757e NB	174	}
e0d19036 NB	175	if (d >= array.raid_disks &&
	176	disk.major == 0 &&
	177	disk.minor == 0)
	178	continue;
cd29a5c8 NB	179	if (!brief) {
	180	printf(" %5d %5d %5d %5d ",
	181	disk.number, disk.major, disk.minor, disk.raid_disk);
	182	if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty");
	183	if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
	184	if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
	185	if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
feb716e9 NB	186	if (disk.state == 0) { printf(" spare"); spares++; }
	187	}
	188	if (test && d < array.raid_disks && disk.state & (1<<MD_DISK_FAULTY)) {
	189	if ((rv & 1) && (array.level ==4 \|\| array.level == 5))
	190	rv \|= 2;
	191	rv \|= 1;
cd29a5c8	192	}
82b27616	193	if ((dv=map_dev(disk.major, disk.minor))) {
d013a55e NB	194	if (brief) {
	195	if (devices) {
	196	devices = realloc(devices,
	197	strlen(devices)+1+strlen(dv)+1);
	198	strcat(strcat(devices,","),dv);
	199	} else
	200	devices = strdup(dv);
	201	} else
	202	printf(" %s", dv);
5787fa49	203	if (!have_super && (disk.state & (1<<MD_DISK_ACTIVE))) {
cd29a5c8 NB	204	/* try to read the superblock from this device
	205	* to get more info
	206	*/
	207	int fd = open(dv, O_RDONLY);
	208	if (fd >=0 &&
	209	load_super(fd, &super) ==0 &&
98c6faba NB	210	(unsigned long)super.ctime == (unsigned long)array.ctime &&
98c6faba NB	211	(unsigned int)super.level == (unsigned int)array.level)
cd29a5c8 NB	212	have_super = 1;
cd29a5c8 NB	213	}
82b27616	214	}
cd29a5c8	215	if (!brief) printf("\n");
64c4757e	216	}
feb716e9	217	if (spares && brief) printf(" spares=%d", spares);
82b27616	218	if (have_super) {
cd29a5c8 NB	219	if (brief) printf(" UUID=");
cd29a5c8 NB	220	else printf(" UUID : ");
82b27616	221	if (super.minor_version >= 90)
cd29a5c8 NB	222	printf("%08x:%08x:%08x:%08x", super.set_uuid0, super.set_uuid1,
	223	super.set_uuid2, super.set_uuid3);
	224	else
	225	printf("%08x", super.set_uuid0);
5787fa49 NB	226	if (!brief)
5787fa49 NB	227	printf("\n Events : %d.%d\n", super.events_hi, super.events_lo);
82b27616	228	}
d013a55e	229	if (brief && devices) printf("\n devices=%s", devices);
cd29a5c8	230	if (brief) printf("\n");
feb716e9 NB	231	if (test && (rv&2)) rv &= ~1;
feb716e9 NB	232	return rv;
64c4757e	233	}