[thirdparty/mdadm.git] / Detail.c

/*
 * mdadm - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
 *
 *
 *    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@suse.de>
 */

#include	"mdadm.h"
#include	"md_p.h"
#include	"md_u.h"
#include	<dirent.h>

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

	int fd = open(dev, O_RDONLY);
	int vers;
	mdu_array_info_t array;
	mdu_disk_info_t *disks;
	int next;
	int d;
	time_t atime;
	char *c;
	char *devices = NULL;
	int spares = 0;
	struct stat stb;
	int is_26 = get_linux_version() >= 2006000;
	int is_rebuilding = 0;
	int failed = 0;
	struct supertype *st;
	char *subarray = NULL;
	int max_disks = MD_SB_DISKS; /* just a default */
	struct mdinfo *info = NULL;
	struct mdinfo *sra;
	char *member = NULL;
	char *container = NULL;

	int rv = test ? 4 : 1;
	int avail_disks = 0;
	char *avail;

	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;
	}
	sra = sysfs_read(fd, 0, GET_VERSION);
	st = super_by_fd(fd, &subarray);

	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
		stb.st_rdev = 0;
	rv = 0;

	if (st)
		max_disks = st->max_devs;

	if (subarray) {
		/* This is a subarray of some container.
		 * We want the name of the container, and the member
		 */
		int dn = st->container_dev;

		member = subarray;
		container = map_dev(dev2major(dn), dev2minor(dn), 1);
	}

	/* try to load a superblock */
	if (st) for (d = 0; d < max_disks; d++) {
		mdu_disk_info_t disk;
		char *dv;
		int fd2;
		int err;
		disk.number = d;
		if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
			continue;
		if (d >= array.raid_disks &&
		    disk.major == 0 &&
		    disk.minor == 0)
			continue;

		if (array.raid_disks > 0 &&
		    (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
			continue;

		dv = map_dev(disk.major, disk.minor, 1);
		if (!dv)
			continue;

		fd2 = dev_open(dv, O_RDONLY);
		if (fd2 < 0)
			continue;

		if (st->sb)
			st->ss->free_super(st);

		err = st->ss->load_super(st, fd2, NULL);
		close(fd2);
		if (err)
			continue;
		if (info)
			free(info);
		if (subarray)
			info = st->ss->container_content(st, subarray);
		else {
			info = malloc(sizeof(*info));
			st->ss->getinfo_super(st, info, NULL);
		}
		if (!info)
			continue;

		if (array.raid_disks != 0 && /* container */
		    (info->array.ctime != array.ctime ||
		     info->array.level != array.level)) {
			st->ss->free_super(st);
			continue;
		}
		/* some formats (imsm) have free-floating-spares
		 * with a uuid of uuid_match_any, they don't
		 * have very good info about the rest of the
		 * container, so keep searching when
		 * encountering such a device.  Otherwise, stop
		 * after the first successful call to
		 * ->load_super.
		 */
		if (memcmp(uuid_match_any,
			   info->uuid,
			   sizeof(uuid_match_any)) == 0) {
			st->ss->free_super(st);
			continue;
		}
		break;
	}

	/* Ok, we have some info to print... */
	c = map_num(pers, array.level);

	if (export) {
		if (array.raid_disks) {
			if (c)
				printf("MD_LEVEL=%s\n", c);
			printf("MD_DEVICES=%d\n", array.raid_disks);
		} else {
			printf("MD_LEVEL=container\n");
			printf("MD_DEVICES=%d\n", array.nr_disks);
		}
		if (container) {
			printf("MD_CONTAINER=%s\n", container);
			printf("MD_MEMBER=%s\n", member);
		} else {
			if (sra && sra->array.major_version < 0)
				printf("MD_METADATA=%s\n", sra->text_version);
			else
				printf("MD_METADATA=%d.%d\n",
				       array.major_version, array.minor_version);
		}
		
		if (st && st->sb && info) {
			char nbuf[64];
			struct map_ent *mp, *map = NULL;

			fname_from_uuid(st, info, nbuf, ':');
			printf("MD_UUID=%s\n", nbuf+5);
			mp = map_by_uuid(&map, info->uuid);
			if (mp && mp->path &&
			    strncmp(mp->path, "/dev/md/", 8) == 0)
				printf("MD_DEVNAME=%s\n", mp->path+8);

			if (st->ss->export_detail_super)
				st->ss->export_detail_super(st);
		} else {
			struct map_ent *mp, *map = NULL;
			char nbuf[64];
			mp = map_by_devnum(&map, fd2devnum(fd));
			if (mp) {
				__fname_from_uuid(mp->uuid, 0, nbuf, ':');
				printf("MD_UUID=%s\n", nbuf+5);
			}
			if (mp && mp->path &&
			    strncmp(mp->path, "/dev/md/", 8) == 0)
				printf("MD_DEVNAME=%s\n", mp->path+8);
		}
		goto out;
	}

	disks = malloc(max_disks * sizeof(mdu_disk_info_t));
	for (d=0; d<max_disks; d++) {
		disks[d].state = (1<<MD_DISK_REMOVED);
		disks[d].major = disks[d].minor = 0;
		disks[d].number = disks[d].raid_disk = d;
	}

	next = array.raid_disks;
	for (d=0; d < max_disks; d++) {
		mdu_disk_info_t disk;
		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 (disk.major == 0 && disk.minor == 0)
			continue;
		if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
			disks[disk.raid_disk] = disk;
		else if (next < max_disks)
			disks[next++] = disk;
	}

	avail = calloc(array.raid_disks, 1);

	for (d= 0; d < array.raid_disks; d++) {
		mdu_disk_info_t disk = disks[d];

		if ((disk.state & (1<<MD_DISK_SYNC))) {
			avail_disks ++;
			avail[d] = 1;
		}
	}

	if (brief) {
		mdu_bitmap_file_t bmf;
		printf("ARRAY %s", dev);
		if (brief > 1) {
			if (array.raid_disks)
				printf(" level=%s num-devices=%d",
				       c?c:"-unknown-",
				       array.raid_disks );
			else
				printf(" level=container num-devices=%d",
				       array.nr_disks);
		}
		if (container) {
			printf(" container=%s", container);
			printf(" member=%s", member);
		} else {
			if (sra && sra->array.major_version < 0)
				printf(" metadata=%s", sra->text_version);
			else
				printf(" metadata=%d.%d",
				       array.major_version, array.minor_version);
		}

		/* Only try GET_BITMAP_FILE for 0.90.01 and later */
		if (vers >= 9001 &&
		    ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
		    bmf.pathname[0]) {
			printf(" bitmap=%s", bmf.pathname);
		}
	} else {
		mdu_bitmap_file_t bmf;
		unsigned long long larray_size;
		struct mdstat_ent *ms = mdstat_read(0, 0);
		struct mdstat_ent *e;
		int devnum = array.md_minor;
		if (major(stb.st_rdev) == (unsigned)get_mdp_major())
			devnum = -1 - devnum;

		for (e=ms; e; e=e->next)
			if (e->devnum == devnum)
				break;
		if (!get_dev_size(fd, NULL, &larray_size))
			larray_size = 0;

		printf("%s:\n", dev);

		if (container)
			printf("      Container : %s, member %s\n", container, member);
		else {
		if (sra && sra->array.major_version < 0)
			printf("        Version : %s\n", sra->text_version);
		else
			printf("        Version : %d.%d\n",
			       array.major_version, array.minor_version);
		}

		atime = array.ctime;
		if (atime)
			printf("  Creation Time : %.24s\n", ctime(&atime));
		if (array.raid_disks == 0) c = "container";
		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) {
			if (array.major_version != 0 &&
			    (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
				unsigned long long dsize = get_component_size(fd);
				if (dsize > 0)
					printf("  Used Dev Size : %llu%s\n",
					       dsize/2,
					 human_size((long long)dsize<<9));
				else
					printf("  Used Dev Size : unknown\n");
			} else
				printf("  Used Dev Size : %d%s\n", array.size,
				       human_size((long long)array.size<<10));
		}
		if (array.raid_disks)
			printf("   Raid Devices : %d\n", array.raid_disks);
		printf("  Total Devices : %d\n", array.nr_disks);
		if (!container && 
		    ((sra == NULL && array.major_version == 0) ||
		     (sra && sra->array.major_version == 0)))
			printf("Preferred Minor : %d\n", array.md_minor);
		if (sra == NULL || sra->array.major_version >= 0)
			printf("    Persistence : Superblock is %spersistent\n",
			       array.not_persistent?"not ":"");
		printf("\n");
		/* Only try GET_BITMAP_FILE for 0.90.01 and later */
		if (vers >= 9001 &&
		    ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
		    bmf.pathname[0]) {
			printf("  Intent Bitmap : %s\n", bmf.pathname);
			printf("\n");
		} else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
			printf("  Intent Bitmap : Internal\n\n");
		atime = array.utime;
		if (atime)
			printf("    Update Time : %.24s\n", ctime(&atime));
		if (array.raid_disks) {
			static char *sync_action[] = {", recovering",", resyncing",", reshaping",", checking"};
			char *st;
			if (avail_disks == array.raid_disks)
				st = "";
			else if (!enough(array.level, array.raid_disks,
					 array.layout, 1, avail, avail_disks))
				st = ", FAILED";
			else
				st = ", degraded";

			printf("          State : %s%s%s%s\n",
			       (array.state&(1<<MD_SB_CLEAN))?"clean":"active",
			       st,
			       (!e || e->percent < 0) ? "" : sync_action[e->resync],
			       larray_size ? "": ", Not Started");
		}
		if (array.raid_disks)
			printf(" Active Devices : %d\n", array.active_disks);
		printf("Working Devices : %d\n", array.working_disks);
		if (array.raid_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-");
		}
		if (array.level == 6) {
			c = map_num(r6layout, array.layout);
			printf("         Layout : %s\n", c?c:"-unknown-");
		}
		if (array.level == 10) {
			printf("         Layout :");
			print_r10_layout(array.layout);
			printf("\n");
		}
		switch (array.level) {
		case 0:
		case 4:
		case 5:
		case 10:
		case 6:
			if (array.chunk_size)
				printf("     Chunk Size : %dK\n\n",
				       array.chunk_size/1024);
			break;
		case -1:
			printf("       Rounding : %dK\n\n", array.chunk_size/1024);
			break;
		default: break;
		}

		if (e && e->percent >= 0) {
			printf(" Re%s Status : %d%% complete\n",
			       (st && st->sb && info->reshape_active)?
			          "shape":"build",
			       e->percent);
			is_rebuilding = 1;
		}
		free_mdstat(ms);

		if (st->sb && info->reshape_active) {
#if 0
This is pretty boring
			printf("  Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
			       human_size((unsigned long long)info->reshape_progress<<9));
#endif
			if (info->delta_disks > 0)
				printf("  Delta Devices : %d, (%d->%d)\n",
				       info->delta_disks, array.raid_disks - info->delta_disks, array.raid_disks);
			if (info->delta_disks < 0)
				printf("  Delta Devices : %d, (%d->%d)\n",
				       info->delta_disks, array.raid_disks, array.raid_disks + info->delta_disks);
			if (info->new_level != array.level) {
				char *c = map_num(pers, info->new_level);
				printf("      New Level : %s\n", c?c:"-unknown-");
			}
			if (info->new_level != array.level ||
			    info->new_layout != array.layout) {
				if (info->new_level == 5) {
					char *c = map_num(r5layout, info->new_layout);
					printf("     New Layout : %s\n",
					       c?c:"-unknown-");
				}
				if (info->new_level == 6) {
					char *c = map_num(r6layout, info->new_layout);
					printf("     New Layout : %s\n",
					       c?c:"-unknown-");
				}
				if (info->new_level == 10) {
					printf("     New Layout : near=%d, %s=%d\n",
					       info->new_layout&255,
					       (info->new_layout&0x10000)?"offset":"far",
					       (info->new_layout>>8)&255);
				}
			}
			if (info->new_chunk != array.chunk_size)
				printf("  New Chunksize : %dK\n", info->new_chunk/1024);
			printf("\n");
		} else if (e && e->percent >= 0)
			printf("\n");
		if (st && st->sb)
			st->ss->detail_super(st, homehost);

		if (array.raid_disks == 0 && sra && sra->array.major_version == -1
		    && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
			/* This looks like a container.  Find any active arrays
			 * That claim to be a member.
			 */
			DIR *dir = opendir("/sys/block");
			struct dirent *de;

			printf("  Member Arrays :");

			while (dir && (de = readdir(dir)) != NULL) {
				char path[200];
				char vbuf[1024];
				int nlen = strlen(sra->sys_name);
				int dn;
				if (de->d_name[0] == '.')
					continue;
				sprintf(path, "/sys/block/%s/md/metadata_version",
					de->d_name);
				if (load_sys(path, vbuf) < 0)
					continue;
				if (strncmp(vbuf, "external:", 9) != 0 ||
				    !is_subarray(sra->sys_name+9) ||
				    strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
				    vbuf[10+nlen] != '/')
					continue;
				dn = devname2devnum(de->d_name);
				printf(" %s", map_dev(dev2major(dn),
						      dev2minor(dn), 1));
			}
			if (dir)
				closedir(dir);
			printf("\n\n");
		}

		if (array.raid_disks)
			printf("    Number   Major   Minor   RaidDevice State\n");
		else
			printf("    Number   Major   Minor   RaidDevice\n");
	}
	free(info);

	for (d= 0; d < max_disks; d++) {
		char *dv;
		mdu_disk_info_t disk = disks[d];

		if (d >= array.raid_disks &&
		    disk.major == 0 &&
		    disk.minor == 0)
			continue;
		if (!brief) {
			if (d == array.raid_disks) printf("\n");
			if (disk.raid_disk < 0)
				printf("   %5d   %5d    %5d        -     ",
				       disk.number, disk.major, disk.minor);
			else
				printf("   %5d   %5d    %5d    %5d     ",
				       disk.number, disk.major, disk.minor, disk.raid_disk);
		}
		if (!brief && array.raid_disks) {

			if (disk.state & (1<<MD_DISK_FAULTY)) {
				printf(" faulty");
				if (disk.raid_disk < array.raid_disks &&
				    disk.raid_disk >= 0)
					failed++;
			}
			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 & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
			if ((disk.state &
			     ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
			    == 0) {
				printf(" spare");
				if (is_26) {
					if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
						printf(" rebuilding");
				} else if (is_rebuilding && failed) {
					/* Taking a bit of a risk here, we remove the
					 * device from the array, and then put it back.
					 * If this fails, we are rebuilding
					 */
					int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
					if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
					if (err && errno ==  EBUSY)
						printf(" rebuilding");
				}
			}
		}
		if (disk.state == 0) spares++;
		if (test && d < array.raid_disks
		    && !(disk.state & (1<<MD_DISK_SYNC)))
			rv |= 1;
		if ((dv=map_dev(disk.major, disk.minor, 0))) {
			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 (!brief) printf("\n");
	}
	if (spares && brief && array.raid_disks) printf(" spares=%d", spares);
	if (brief && st && st->sb)
		st->ss->brief_detail_super(st);
	st->ss->free_super(st);

	if (brief > 1 && devices) printf("\n   devices=%s", devices);
	if (brief) printf("\n");
	if (test &&
	    !enough(array.level, array.raid_disks, array.layout,
		    1, avail, avail_disks))
		rv = 2;

	free(disks);
out:
	close(fd);
	free(subarray);
	return rv;
}

int Detail_Platform(struct superswitch *ss, int scan, int verbose)
{
	/* display platform capabilities for the given metadata format
	 * 'scan' in this context means iterate over all metadata types
	 */
	int i;
	int err = 1;

	if (ss && ss->detail_platform)
		err = ss->detail_platform(verbose, 0);
	else if (ss) {
		if (verbose)
			fprintf(stderr, Name ": %s metadata is platform independent\n",
				ss->name ? : "[no name]");
	} else if (!scan) {
		if (verbose)
			fprintf(stderr, Name ": specify a metadata type or --scan\n");
	}

	if (!scan)
		return err;

	for (i = 0; superlist[i]; i++) {
		struct superswitch *meta = superlist[i];

		if (meta == ss)
			continue;
		if (verbose)
			fprintf(stderr, Name ": checking metadata %s\n",
				meta->name ? : "[no name]");
		if (!meta->detail_platform) {
			if (verbose)
				fprintf(stderr, Name ": %s metadata is platform independent\n",
					meta->name ? : "[no name]");
		} else
			err |= meta->detail_platform(verbose, 0);
	}

	return err;
}
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
e736b623	4	* Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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
e736b623	22	* Email: <neilb@suse.de>
64c4757e NB	23	*/
64c4757e NB	24
9a9dab36	25	#include "mdadm.h"
64c4757e NB	26	#include "md_p.h"
64c4757e NB	27	#include "md_u.h"
c69b251b	28	#include <dirent.h>
64c4757e	29
54bad364	30	int Detail(char dev, int brief, int export, int test, char homehost)
64c4757e NB	31	{
	32	/*
	33	* Print out details for an md array by using
	34	* GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
	35	*/
	36
fb97b4d6	37	int fd = open(dev, O_RDONLY);
64c4757e NB	38	int vers;
64c4757e NB	39	mdu_array_info_t array;
b0c63f32 NB	40	mdu_disk_info_t *disks;
b0c63f32 NB	41	int next;
64c4757e NB	42	int d;
64c4757e NB	43	time_t atime;
682c7051	44	char *c;
d013a55e	45	char *devices = NULL;
feb716e9	46	int spares = 0;
dd0781e5	47	struct stat stb;
e5329c37 NB	48	int is_26 = get_linux_version() >= 2006000;
	49	int is_rebuilding = 0;
	50	int failed = 0;
9aaada05	51	struct supertype *st;
4725bc31	52	char *subarray = NULL;
e27d562b	53	int max_disks = MD_SB_DISKS; /* just a default */
a1f976a0	54	struct mdinfo *info = NULL;
142cb9e1	55	struct mdinfo *sra;
c69b251b N	56	char *member = NULL;
c69b251b N	57	char *container = NULL;
64c4757e	58
feb716e9	59	int rv = test ? 4 : 1;
a77be586 NB	60	int avail_disks = 0;
a77be586 NB	61	char *avail;
82b27616	62
64c4757e	63	if (fd < 0) {
682c7051	64	fprintf(stderr, Name ": cannot open %s: %s\n",
64c4757e	65	dev, strerror(errno));
feb716e9	66	return rv;
64c4757e NB	67	}
	68	vers = md_get_version(fd);
	69	if (vers < 0) {
682c7051	70	fprintf(stderr, Name ": %s does not appear to be an md device\n",
64c4757e NB	71	dev);
64c4757e NB	72	close(fd);
feb716e9	73	return rv;
64c4757e	74	}
682c7051 NB	75	if (vers < 9000) {
682c7051 NB	76	fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
64c4757e NB	77	dev);
64c4757e NB	78	close(fd);
feb716e9	79	return rv;
64c4757e NB	80	}
	81	if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
	82	if (errno == ENODEV)
682c7051	83	fprintf(stderr, Name ": md device %s does not appear to be active.\n",
64c4757e NB	84	dev);
64c4757e NB	85	else
682c7051	86	fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
64c4757e NB	87	dev, strerror(errno));
64c4757e NB	88	close(fd);
feb716e9	89	return rv;
64c4757e	90	}
142cb9e1	91	sra = sysfs_read(fd, 0, GET_VERSION);
4725bc31	92	st = super_by_fd(fd, &subarray);
f9ce90ba	93
dd0781e5 NB	94	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
dd0781e5 NB	95	stb.st_rdev = 0;
feb716e9	96	rv = 0;
e5329c37	97
c69b251b N	98	if (st)
	99	max_disks = st->max_devs;
	100
5f7e44b2	101	if (subarray) {
c69b251b N	102	/* This is a subarray of some container.
	103	* We want the name of the container, and the member
	104	*/
5f7e44b2 DW	105	int dn = st->container_dev;
	106
	107	member = subarray;
c69b251b N	108	container = map_dev(dev2major(dn), dev2minor(dn), 1);
c69b251b N	109	}
ea329559	110
e5329c37	111	/* try to load a superblock */
9aaada05	112	if (st) for (d = 0; d < max_disks; d++) {
e5329c37 NB	113	mdu_disk_info_t disk;
e5329c37 NB	114	char *dv;
9aaada05 N	115	int fd2;
9aaada05 N	116	int err;
e5329c37 NB	117	disk.number = d;
	118	if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
	119	continue;
	120	if (d >= array.raid_disks &&
	121	disk.major == 0 &&
	122	disk.minor == 0)
	123	continue;
9aaada05 N	124
	125	if (array.raid_disks > 0 &&
	126	(disk.state & (1 << MD_DISK_ACTIVE)) == 0)
	127	continue;
	128
	129	dv = map_dev(disk.major, disk.minor, 1);
	130	if (!dv)
	131	continue;
	132
	133	fd2 = dev_open(dv, O_RDONLY);
	134	if (fd2 < 0)
	135	continue;
	136
	137	if (st->sb)
	138	st->ss->free_super(st);
	139
	140	err = st->ss->load_super(st, fd2, NULL);
	141	close(fd2);
	142	if (err)
	143	continue;
a1f976a0 N	144	if (info)
	145	free(info);
	146	if (subarray)
	147	info = st->ss->container_content(st, subarray);
	148	else {
	149	info = malloc(sizeof(*info));
	150	st->ss->getinfo_super(st, info, NULL);
	151	}
	152	if (!info)
	153	continue;
9aaada05 N	154
9aaada05 N	155	if (array.raid_disks != 0 && /* container */
a1f976a0 N	156	(info->array.ctime != array.ctime \|\|
a1f976a0 N	157	info->array.level != array.level)) {
9aaada05 N	158	st->ss->free_super(st);
9aaada05 N	159	continue;
e5329c37	160	}
9aaada05 N	161	/* some formats (imsm) have free-floating-spares
	162	* with a uuid of uuid_match_any, they don't
	163	* have very good info about the rest of the
	164	* container, so keep searching when
	165	* encountering such a device. Otherwise, stop
	166	* after the first successful call to
	167	* ->load_super.
	168	*/
	169	if (memcmp(uuid_match_any,
a1f976a0	170	info->uuid,
9aaada05 N	171	sizeof(uuid_match_any)) == 0) {
	172	st->ss->free_super(st);
	173	continue;
	174	}
	175	break;
e5329c37 NB	176	}
e5329c37 NB	177
64c4757e	178	/* Ok, we have some info to print... */
682c7051	179	c = map_num(pers, array.level);
54bad364 KS	180
54bad364 KS	181	if (export) {
c69b251b N	182	if (array.raid_disks) {
	183	if (c)
	184	printf("MD_LEVEL=%s\n", c);
	185	printf("MD_DEVICES=%d\n", array.raid_disks);
	186	} else {
	187	printf("MD_LEVEL=container\n");
	188	printf("MD_DEVICES=%d\n", array.nr_disks);
	189	}
	190	if (container) {
	191	printf("MD_CONTAINER=%s\n", container);
	192	printf("MD_MEMBER=%s\n", member);
	193	} else {
	194	if (sra && sra->array.major_version < 0)
	195	printf("MD_METADATA=%s\n", sra->text_version);
	196	else
6e48d593	197	printf("MD_METADATA=%d.%d\n",
c69b251b N	198	array.major_version, array.minor_version);
c69b251b N	199	}
35ddc76d	200
a1f976a0	201	if (st && st->sb && info) {
35ddc76d	202	char nbuf[64];
f069dd29	203	struct map_ent mp, map = NULL;
9aaada05	204
a1f976a0	205	fname_from_uuid(st, info, nbuf, ':');
35ddc76d	206	printf("MD_UUID=%s\n", nbuf+5);
a1f976a0	207	mp = map_by_uuid(&map, info->uuid);
f069dd29 N	208	if (mp && mp->path &&
	209	strncmp(mp->path, "/dev/md/", 8) == 0)
	210	printf("MD_DEVNAME=%s\n", mp->path+8);
142cb9e1	211
35ddc76d N	212	if (st->ss->export_detail_super)
35ddc76d N	213	st->ss->export_detail_super(st);
7e6c6cb2 N	214	} else {
7e6c6cb2 N	215	struct map_ent mp, map = NULL;
aae5a112	216	char nbuf[64];
7e6c6cb2	217	mp = map_by_devnum(&map, fd2devnum(fd));
aae5a112 DW	218	if (mp) {
	219	__fname_from_uuid(mp->uuid, 0, nbuf, ':');
	220	printf("MD_UUID=%s\n", nbuf+5);
	221	}
7e6c6cb2 N	222	if (mp && mp->path &&
	223	strncmp(mp->path, "/dev/md/", 8) == 0)
	224	printf("MD_DEVNAME=%s\n", mp->path+8);
35ddc76d	225	}
54bad364 KS	226	goto out;
	227	}
	228
d998adc3 N	229	disks = malloc(max_disks * sizeof(mdu_disk_info_t));
	230	for (d=0; d<max_disks; d++) {
	231	disks[d].state = (1<<MD_DISK_REMOVED);
	232	disks[d].major = disks[d].minor = 0;
	233	disks[d].number = disks[d].raid_disk = d;
	234	}
	235
	236	next = array.raid_disks;
	237	for (d=0; d < max_disks; d++) {
	238	mdu_disk_info_t disk;
	239	disk.number = d;
	240	if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
	241	if (d < array.raid_disks)
	242	fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
	243	d, strerror(errno));
	244	continue;
	245	}
	246	if (disk.major == 0 && disk.minor == 0)
	247	continue;
	248	if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
	249	disks[disk.raid_disk] = disk;
	250	else if (next < max_disks)
	251	disks[next++] = disk;
	252	}
	253
	254	avail = calloc(array.raid_disks, 1);
	255
	256	for (d= 0; d < array.raid_disks; d++) {
	257	mdu_disk_info_t disk = disks[d];
	258
	259	if ((disk.state & (1<<MD_DISK_SYNC))) {
	260	avail_disks ++;
	261	avail[d] = 1;
	262	}
	263	}
	264
142cb9e1	265	if (brief) {
e8eb8763	266	mdu_bitmap_file_t bmf;
061f2c6a N	267	printf("ARRAY %s", dev);
	268	if (brief > 1) {
	269	if (array.raid_disks)
0e90271e	270	printf(" level=%s num-devices=%d",
061f2c6a N	271	c?c:"-unknown-",
	272	array.raid_disks );
	273	else
0e90271e	274	printf(" level=container num-devices=%d",
061f2c6a N	275	array.nr_disks);
061f2c6a N	276	}
c69b251b N	277	if (container) {
	278	printf(" container=%s", container);
	279	printf(" member=%s", member);
	280	} else {
	281	if (sra && sra->array.major_version < 0)
	282	printf(" metadata=%s", sra->text_version);
	283	else
6e48d593	284	printf(" metadata=%d.%d",
c69b251b N	285	array.major_version, array.minor_version);
c69b251b N	286	}
e8eb8763 NB	287
	288	/* Only try GET_BITMAP_FILE for 0.90.01 and later */
	289	if (vers >= 9001 &&
	290	ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
	291	bmf.pathname[0]) {
	292	printf(" bitmap=%s", bmf.pathname);
	293	}
142cb9e1	294	} else {
8fac0577	295	mdu_bitmap_file_t bmf;
e0d19036	296	unsigned long long larray_size;
22a88995	297	struct mdstat_ent *ms = mdstat_read(0, 0);
dd0781e5 NB	298	struct mdstat_ent *e;
dd0781e5 NB	299	int devnum = array.md_minor;
f21e18ca	300	if (major(stb.st_rdev) == (unsigned)get_mdp_major())
dd0781e5 NB	301	devnum = -1 - devnum;
	302
	303	for (e=ms; e; e=e->next)
	304	if (e->devnum == devnum)
	305	break;
beae1dfe NB	306	if (!get_dev_size(fd, NULL, &larray_size))
beae1dfe NB	307	larray_size = 0;
56eb10c0	308
cd29a5c8	309	printf("%s:\n", dev);
142cb9e1	310
c69b251b N	311	if (container)
	312	printf(" Container : %s, member %s\n", container, member);
	313	else {
142cb9e1 NB	314	if (sra && sra->array.major_version < 0)
	315	printf(" Version : %s\n", sra->text_version);
	316	else
6e48d593	317	printf(" Version : %d.%d\n",
142cb9e1	318	array.major_version, array.minor_version);
c69b251b	319	}
142cb9e1	320
cd29a5c8	321	atime = array.ctime;
c69b251b N	322	if (atime)
c69b251b N	323	printf(" Creation Time : %.24s\n", ctime(&atime));
142cb9e1	324	if (array.raid_disks == 0) c = "container";
cd29a5c8	325	printf(" Raid Level : %s\n", c?c:"-unknown-");
56eb10c0	326	if (larray_size)
dd0781e5	327	printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
3d4064cc NB	328	if (array.level >= 1) {
3d4064cc NB	329	if (array.major_version != 0 &&
6ee5c05a NB	330	(larray_size >= 0xFFFFFFFFULL\|\| array.size == 0)) {
	331	unsigned long long dsize = get_component_size(fd);
	332	if (dsize > 0)
e3362544	333	printf(" Used Dev Size : %llu%s\n",
a1236192 N	334	dsize/2,
a1236192 N	335	human_size((long long)dsize<<9));
6ee5c05a	336	else
e3362544	337	printf(" Used Dev Size : unknown\n");
6ee5c05a	338	} else
e3362544 NB	339	printf(" Used Dev Size : %d%s\n", array.size,
e3362544 NB	340	human_size((long long)array.size<<10));
3d4064cc	341	}
c69b251b N	342	if (array.raid_disks)
c69b251b N	343	printf(" Raid Devices : %d\n", array.raid_disks);
b83d95f3	344	printf(" Total Devices : %d\n", array.nr_disks);
c69b251b N	345	if (!container &&
	346	((sra == NULL && array.major_version == 0) \|\|
	347	(sra && sra->array.major_version == 0)))
	348	printf("Preferred Minor : %d\n", array.md_minor);
142cb9e1 NB	349	if (sra == NULL \|\| sra->array.major_version >= 0)
	350	printf(" Persistence : Superblock is %spersistent\n",
	351	array.not_persistent?"not ":"");
cd29a5c8	352	printf("\n");
4027ddca NB	353	/* Only try GET_BITMAP_FILE for 0.90.01 and later */
	354	if (vers >= 9001 &&
	355	ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
	356	bmf.pathname[0]) {
8fac0577 NB	357	printf(" Intent Bitmap : %s\n", bmf.pathname);
	358	printf("\n");
	359	} else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
	360	printf(" Intent Bitmap : Internal\n\n");
cd29a5c8	361	atime = array.utime;
c69b251b N	362	if (atime)
c69b251b N	363	printf(" Update Time : %.24s\n", ctime(&atime));
d998adc3	364	if (array.raid_disks) {
f94c116f	365	static char *sync_action[] = {", recovering",", resyncing",", reshaping",", checking"};
d998adc3 N	366	char *st;
	367	if (avail_disks == array.raid_disks)
	368	st = "";
	369	else if (!enough(array.level, array.raid_disks,
	370	array.layout, 1, avail, avail_disks))
	371	st = ", FAILED";
	372	else
	373	st = ", degraded";
	374
c69b251b N	375	printf(" State : %s%s%s%s\n",
c69b251b N	376	(array.state&(1<<MD_SB_CLEAN))?"clean":"active",
d998adc3	377	st,
f94c116f	378	(!e \|\| e->percent < 0) ? "" : sync_action[e->resync],
c69b251b	379	larray_size ? "": ", Not Started");
d998adc3	380	}
c69b251b N	381	if (array.raid_disks)
c69b251b N	382	printf(" Active Devices : %d\n", array.active_disks);
b83d95f3	383	printf("Working Devices : %d\n", array.working_disks);
c69b251b N	384	if (array.raid_disks) {
	385	printf(" Failed Devices : %d\n", array.failed_disks);
	386	printf(" Spare Devices : %d\n", array.spare_disks);
	387	}
cd29a5c8 NB	388	printf("\n");
	389	if (array.level == 5) {
	390	c = map_num(r5layout, array.layout);
	391	printf(" Layout : %s\n", c?c:"-unknown-");
	392	}
fe77a154 N	393	if (array.level == 6) {
	394	c = map_num(r6layout, array.layout);
	395	printf(" Layout : %s\n", c?c:"-unknown-");
	396	}
e5329c37	397	if (array.level == 10) {
e4965ef8 N	398	printf(" Layout :");
	399	print_r10_layout(array.layout);
	400	printf("\n");
e5329c37	401	}
cd29a5c8 NB	402	switch (array.level) {
	403	case 0:
	404	case 4:
	405	case 5:
e5329c37 NB	406	case 10:
e5329c37 NB	407	case 6:
142cb9e1 NB	408	if (array.chunk_size)
	409	printf(" Chunk Size : %dK\n\n",
	410	array.chunk_size/1024);
cd29a5c8 NB	411	break;
cd29a5c8 NB	412	case -1:
e5329c37	413	printf(" Rounding : %dK\n\n", array.chunk_size/1024);
cd29a5c8 NB	414	break;
	415	default: break;
	416	}
aba69144	417
e5329c37	418	if (e && e->percent >= 0) {
bed256c2	419	printf(" Re%s Status : %d%% complete\n",
a1f976a0	420	(st && st->sb && info->reshape_active)?
3da92f27	421	"shape":"build",
bed256c2	422	e->percent);
e5329c37 NB	423	is_rebuilding = 1;
e5329c37 NB	424	}
dd0781e5 NB	425	free_mdstat(ms);
dd0781e5 NB	426
a1f976a0	427	if (st->sb && info->reshape_active) {
bed256c2 NB	428	#if 0
bed256c2 NB	429	This is pretty boring
a1f976a0 N	430	printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
a1f976a0 N	431	human_size((unsigned long long)info->reshape_progress<<9));
bed256c2	432	#endif
a1f976a0	433	if (info->delta_disks > 0)
bed256c2	434	printf(" Delta Devices : %d, (%d->%d)\n",
a1f976a0 N	435	info->delta_disks, array.raid_disks - info->delta_disks, array.raid_disks);
a1f976a0 N	436	if (info->delta_disks < 0)
bed256c2	437	printf(" Delta Devices : %d, (%d->%d)\n",
a1f976a0 N	438	info->delta_disks, array.raid_disks, array.raid_disks + info->delta_disks);
	439	if (info->new_level != array.level) {
	440	char *c = map_num(pers, info->new_level);
bed256c2 NB	441	printf(" New Level : %s\n", c?c:"-unknown-");
bed256c2 NB	442	}
a1f976a0 N	443	if (info->new_level != array.level \|\|
	444	info->new_layout != array.layout) {
	445	if (info->new_level == 5) {
	446	char *c = map_num(r5layout, info->new_layout);
bed256c2 NB	447	printf(" New Layout : %s\n",
	448	c?c:"-unknown-");
	449	}
a1f976a0 N	450	if (info->new_level == 6) {
a1f976a0 N	451	char *c = map_num(r6layout, info->new_layout);
dab54dcb N	452	printf(" New Layout : %s\n",
	453	c?c:"-unknown-");
	454	}
a1f976a0	455	if (info->new_level == 10) {
b578481c	456	printf(" New Layout : near=%d, %s=%d\n",
a1f976a0 N	457	info->new_layout&255,
	458	(info->new_layout&0x10000)?"offset":"far",
	459	(info->new_layout>>8)&255);
bed256c2 NB	460	}
bed256c2 NB	461	}
a1f976a0 N	462	if (info->new_chunk != array.chunk_size)
a1f976a0 N	463	printf(" New Chunksize : %dK\n", info->new_chunk/1024);
bed256c2 NB	464	printf("\n");
	465	} else if (e && e->percent >= 0)
	466	printf("\n");
3da92f27 NB	467	if (st && st->sb)
3da92f27 NB	468	st->ss->detail_super(st, homehost);
e5329c37	469
c69b251b N	470	if (array.raid_disks == 0 && sra && sra->array.major_version == -1
	471	&& sra->array.minor_version == -2 && sra->text_version[0] != '/') {
	472	/* This looks like a container. Find any active arrays
	473	* That claim to be a member.
	474	*/
	475	DIR *dir = opendir("/sys/block");
	476	struct dirent *de;
	477
	478	printf(" Member Arrays :");
	479
	480	while (dir && (de = readdir(dir)) != NULL) {
	481	char path[200];
	482	char vbuf[1024];
	483	int nlen = strlen(sra->sys_name);
	484	int dn;
	485	if (de->d_name[0] == '.')
	486	continue;
	487	sprintf(path, "/sys/block/%s/md/metadata_version",
	488	de->d_name);
	489	if (load_sys(path, vbuf) < 0)
	490	continue;
	491	if (strncmp(vbuf, "external:", 9) != 0 \|\|
	492	!is_subarray(sra->sys_name+9) \|\|
	493	strncmp(vbuf+10, sra->sys_name, nlen) != 0 \|\|
	494	vbuf[10+nlen] != '/')
	495	continue;
	496	dn = devname2devnum(de->d_name);
	497	printf(" %s", map_dev(dev2major(dn),
	498	dev2minor(dn), 1));
	499	}
	500	if (dir)
	501	closedir(dir);
	502	printf("\n\n");
	503	}
	504
	505	if (array.raid_disks)
	506	printf(" Number Major Minor RaidDevice State\n");
	507	else
	508	printf(" Number Major Minor RaidDevice\n");
cd29a5c8	509	}
a1f976a0	510	free(info);
b0c63f32	511
b0c63f32 NB	512	for (d= 0; d < max_disks; d++) {
	513	char *dv;
	514	mdu_disk_info_t disk = disks[d];
	515
e0d19036 NB	516	if (d >= array.raid_disks &&
	517	disk.major == 0 &&
	518	disk.minor == 0)
	519	continue;
cd29a5c8	520	if (!brief) {
b0c63f32	521	if (d == array.raid_disks) printf("\n");
e5329c37	522	if (disk.raid_disk < 0)
aba69144	523	printf(" %5d %5d %5d - ",
e5329c37 NB	524	disk.number, disk.major, disk.minor);
e5329c37 NB	525	else
aba69144	526	printf(" %5d %5d %5d %5d ",
e5329c37	527	disk.number, disk.major, disk.minor, disk.raid_disk);
c69b251b N	528	}
	529	if (!brief && array.raid_disks) {
	530
aba69144 NB	531	if (disk.state & (1<<MD_DISK_FAULTY)) {
aba69144 NB	532	printf(" faulty");
e5329c37 NB	533	if (disk.raid_disk < array.raid_disks &&
	534	disk.raid_disk >= 0)
	535	failed++;
	536	}
cd29a5c8 NB	537	if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
	538	if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
	539	if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
b0c63f32 NB	540	if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
	541	if ((disk.state &
	542	((1<<MD_DISK_ACTIVE)\|(1<<MD_DISK_SYNC)\|(1<<MD_DISK_REMOVED)))
	543	== 0) {
	544	printf(" spare");
e5329c37 NB	545	if (is_26) {
	546	if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
	547	printf(" rebuilding");
	548	} else if (is_rebuilding && failed) {
	549	/* Taking a bit of a risk here, we remove the
	550	* device from the array, and then put it back.
	551	* If this fails, we are rebuilding
	552	*/
0df46c2a NB	553	int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
0df46c2a NB	554	if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
e5329c37 NB	555	if (err && errno == EBUSY)
	556	printf(" rebuilding");
	557	}
	558	}
feb716e9	559	}
e5329c37	560	if (disk.state == 0) spares++;
a77be586 NB	561	if (test && d < array.raid_disks
a77be586 NB	562	&& !(disk.state & (1<<MD_DISK_SYNC)))
feb716e9	563	rv \|= 1;
16c6fa80	564	if ((dv=map_dev(disk.major, disk.minor, 0))) {
d013a55e NB	565	if (brief) {
	566	if (devices) {
	567	devices = realloc(devices,
	568	strlen(devices)+1+strlen(dv)+1);
	569	strcat(strcat(devices,","),dv);
	570	} else
	571	devices = strdup(dv);
	572	} else
	573	printf(" %s", dv);
82b27616	574	}
cd29a5c8	575	if (!brief) printf("\n");
64c4757e	576	}
c69b251b	577	if (spares && brief && array.raid_disks) printf(" spares=%d", spares);
3da92f27 NB	578	if (brief && st && st->sb)
	579	st->ss->brief_detail_super(st);
	580	st->ss->free_super(st);
4b1ac34b	581
22892d56	582	if (brief > 1 && devices) printf("\n devices=%s", devices);
cd29a5c8	583	if (brief) printf("\n");
a77be586 NB	584	if (test &&
	585	!enough(array.level, array.raid_disks, array.layout,
	586	1, avail, avail_disks))
	587	rv = 2;
	588
0eb26465	589	free(disks);
a328c097	590	out:
e5329c37	591	close(fd);
4725bc31	592	free(subarray);
feb716e9	593	return rv;
64c4757e	594	}
4cce4069 DW	595
	596	int Detail_Platform(struct superswitch *ss, int scan, int verbose)
	597	{
	598	/* display platform capabilities for the given metadata format
	599	* 'scan' in this context means iterate over all metadata types
	600	*/
	601	int i;
	602	int err = 1;
	603
	604	if (ss && ss->detail_platform)
5615172f	605	err = ss->detail_platform(verbose, 0);
4cce4069 DW	606	else if (ss) {
	607	if (verbose)
	608	fprintf(stderr, Name ": %s metadata is platform independent\n",
	609	ss->name ? : "[no name]");
	610	} else if (!scan) {
	611	if (verbose)
	612	fprintf(stderr, Name ": specify a metadata type or --scan\n");
	613	}
	614
	615	if (!scan)
	616	return err;
	617
	618	for (i = 0; superlist[i]; i++) {
	619	struct superswitch *meta = superlist[i];
	620
	621	if (meta == ss)
	622	continue;
	623	if (verbose)
	624	fprintf(stderr, Name ": checking metadata %s\n",
	625	meta->name ? : "[no name]");
	626	if (!meta->detail_platform) {
	627	if (verbose)
	628	fprintf(stderr, Name ": %s metadata is platform independent\n",
	629	meta->name ? : "[no name]");
	630	} else
5615172f	631	err \|= meta->detail_platform(verbose, 0);
4cce4069 DW	632	}
	633
	634	return err;
	635	}