[thirdparty/mdadm.git] / Manage.c

/*
 * mdadm - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2006 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@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_u.h"
#include "md_p.h"

#define REGISTER_DEV 		_IO (MD_MAJOR, 1)
#define START_MD     		_IO (MD_MAJOR, 2)
#define STOP_MD      		_IO (MD_MAJOR, 3)

int Manage_ro(char *devname, int fd, int readonly)
{
	/* switch to readonly or rw
	 *
	 * requires >= 0.90.0
	 * first check that array is runing
	 * use RESTART_ARRAY_RW or STOP_ARRAY_RO
	 *
	 */
	mdu_array_info_t array;

	if (md_get_version(fd) < 9000) {
		fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
		return 1;
	}
	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
		fprintf(stderr, Name ": %s does not appear to be active.\n",
			devname);
		return 1;
	}

	if (readonly>0) {
		if (ioctl(fd, STOP_ARRAY_RO, NULL)) {
			fprintf(stderr, Name ": failed to set readonly for %s: %s\n",
				devname, strerror(errno));
			return 1;
		}
	} else if (readonly < 0) {
		if (ioctl(fd, RESTART_ARRAY_RW, NULL)) {
			fprintf(stderr, Name ": failed to set writable for %s: %s\n",
				devname, strerror(errno));
			return 1;
		}
	}
	return 0;
}

#ifndef MDASSEMBLE

int Manage_runstop(char *devname, int fd, int runstop, int quiet)
{
	/* Run or stop the array. array must already be configured
	 * required >= 0.90.0
	 */
	mdu_param_t param; /* unused */

	if (runstop == -1 && md_get_version(fd) < 9000) {
		if (ioctl(fd, STOP_MD, 0)) {
			if (!quiet) fprintf(stderr, Name ": stopping device %s failed: %s\n",
					    devname, strerror(errno));
			return 1;
		}
	}

	if (md_get_version(fd) < 9000) {
		fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
		return 1;
	}
	/*
	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
		fprintf(stderr, Name ": %s does not appear to be active.\n",
			devname);
		return 1;
	}
	*/
	if (runstop>0) {
		if (ioctl(fd, RUN_ARRAY, &param)) {
			fprintf(stderr, Name ": failed to run array %s: %s\n",
				devname, strerror(errno));
			return 1;
		}
		if (quiet <= 0)
			fprintf(stderr, Name ": started %s\n", devname);
	} else if (runstop < 0){
		struct map_ent *map = NULL;
		struct stat stb;
		if (ioctl(fd, STOP_ARRAY, NULL)) {
			if (quiet==0)
				fprintf(stderr, Name ": fail to stop array %s: %s\n",
					devname, strerror(errno));
			return 1;
		}
		if (quiet <= 0)
			fprintf(stderr, Name ": stopped %s\n", devname);
		if (fstat(fd, &stb) == 0) {
			int devnum;
			if (major(stb.st_rdev) == MD_MAJOR)
				devnum = minor(stb.st_rdev);
			else
				devnum = -1-(minor(stb.st_rdev)>>6);
			map_delete(&map, devnum);
			map_write(map);
			map_free(map);
		}
	}
	return 0;
}

int Manage_resize(char *devname, int fd, long long size, int raid_disks)
{
	mdu_array_info_t info;
	if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
		fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
			devname, strerror(errno));
		return 1;
	}
	if (size >= 0)
		info.size = size;
	if (raid_disks > 0)
		info.raid_disks = raid_disks;
	if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
		fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n",
			devname, strerror(errno));
		return 1;
	}
	return 0;
}

int Manage_reconfig(char *devname, int fd, int layout)
{
	mdu_array_info_t info;
	if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
		fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
			devname, strerror(errno));
		return 1;
	}
	info.layout = layout;
	printf("layout set to %d\n", info.layout);
	if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
		fprintf(stderr, Name ": Cannot set layout for %s: %s\n",
			devname, strerror(errno));
		return 1;
	}
	return 0;
}

static int
add_remove_device_container(int fd, int add_remove, struct stat *stb)
{
	int devnum = fd2devnum(fd);
	char *devname = devnum2devname(devnum);
	int sfd = devname ? connect_monitor(devname) : -1;
	struct md_message msg;
	int err = 0;

	if (devname && sfd < 0) {
		fprintf(stderr, Name ": Cannot connect to monitor for %s: %s\n",
			devname, strerror(errno));
		free(devname);
		return 1;
	} else if (sfd < 0) {
		fprintf(stderr, Name ": Cannot determine container name for"
			" device number %d\n", devnum);
		return 1;
	}

	if (add_remove)
		ack(sfd, 0, 0);
	else if (send_remove_device(sfd, stb->st_rdev, 0, 0) != 0) {
		fprintf(stderr, Name ": Failed to send \'%s device\'"
			" message to the container monitor\n",
			add_remove ? "add" : "remove");
		err = 1;
	}

	/* check the reply */
	if (!err && receive_message(sfd, &msg, 0) != 0) {
		fprintf(stderr, Name ": Failed to receive an acknowledgement"
			" from the container monitor\n");
		err = 1;
	}

	if (!err && msg.seq != 0) {
		fprintf(stderr, Name ": %s device failed error code %d\n",
			add_remove ? "Add" : "Remove", msg.seq);
		err = 1;
	}

	free(devname);
	close(sfd);

	return err;
}

int Manage_subdevs(char *devname, int fd,
		   mddev_dev_t devlist, int verbose)
{
	/* do something to each dev.
	 * devmode can be
	 *  'a' - add the device
	 *	   try HOT_ADD_DISK
	 *         If that fails EINVAL, try ADD_NEW_DISK
	 *  'r' - remove the device HOT_REMOVE_DISK
	 *        device can be 'faulty' or 'detached' in which case all
	 *	  matching devices are removed.
	 *  'f' - set the device faulty SET_DISK_FAULTY
	 *        device can be 'detached' in which case any device that
	 *	  is inaccessible will be marked faulty.
	 */
	mdu_array_info_t array;
	mdu_disk_info_t disc;
	unsigned long long array_size;
	mddev_dev_t dv, next = NULL;
	struct stat stb;
	int j, jnext = 0;
	int tfd;
	struct supertype *st, *tst;
	int duuid[4];
	int ouuid[4];

	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
		fprintf(stderr, Name ": cannot get array info for %s\n",
			devname);
		return 1;
	}

	/* array.size is only 32 bit and may be truncated.
	 * So read from sysfs if possible, and record number of sectors
	 */

	array_size = get_component_size(fd);
	if (array_size <= 0)
		array_size = array.size * 2;

	tst = super_by_fd(fd);
	if (!tst) {
		fprintf(stderr, Name ": unsupport array - version %d.%d\n",
			array.major_version, array.minor_version);
		return 1;
	}

	for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
		unsigned long long ldsize;
		char dvname[20];
		char *dnprintable = dv->devname;

		next = dv->next;
		jnext = 0;

		if (strcmp(dv->devname, "failed")==0 ||
		    strcmp(dv->devname, "faulty")==0) {
			if (dv->disposition != 'r') {
				fprintf(stderr, Name ": %s only meaningful "
					"with -r, not -%c\n",
					dv->devname, dv->disposition);
				return 1;
			}
			for (; j < array.raid_disks + array.nr_disks ; j++) {
				disc.number = j;
				if (ioctl(fd, GET_DISK_INFO, &disc))
					continue;
				if (disc.major == 0 && disc.minor == 0)
					continue;
				if ((disc.state & 1) == 0) /* faulty */
					continue;
				stb.st_rdev = makedev(disc.major, disc.minor);
				next = dv;
				jnext = j+1;
				sprintf(dvname,"%d:%d", disc.major, disc.minor);
				dnprintable = dvname;
				break;
			}
			if (jnext == 0)
				continue;
		} else if (strcmp(dv->devname, "detached") == 0) {
			if (dv->disposition != 'r' && dv->disposition != 'f') {
				fprintf(stderr, Name ": %s only meaningful "
					"with -r of -f, not -%c\n",
					dv->devname, dv->disposition);
				return 1;
			}
			for (; j < array.raid_disks + array.nr_disks; j++) {
				int sfd;
				disc.number = j;
				if (ioctl(fd, GET_DISK_INFO, &disc))
					continue;
				if (disc.major == 0 && disc.minor == 0)
					continue;
				sprintf(dvname,"%d:%d", disc.major, disc.minor);
				sfd = dev_open(dvname, O_RDONLY);
				if (sfd >= 0) {
					close(sfd);
					continue;
				}
				if (dv->disposition == 'f' &&
				    (disc.state & 1) == 1) /* already faulty */
					continue;
				if (errno != ENXIO)
					continue;
				stb.st_rdev = makedev(disc.major, disc.minor);
				next = dv;
				jnext = j+1;
				dnprintable = dvname;
				break;
			}
			if (jnext == 0)
				continue;
		} else {
			j = 0;

			if (stat(dv->devname, &stb)) {
				fprintf(stderr, Name ": cannot find %s: %s\n",
					dv->devname, strerror(errno));
				return 1;
			}
			if ((stb.st_mode & S_IFMT) != S_IFBLK) {
				fprintf(stderr, Name ": %s is not a "
					"block device.\n",
					dv->devname);
				return 1;
			}
		}
		switch(dv->disposition){
		default:
			fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
				dv->devname, dv->disposition);
			return 1;
		case 'a':
			/* add the device */
			if (tst == &supertype_container_member) {
				fprintf(stderr, Name ": Cannot add disks to a"
					" \'member\' array, perform this"
					" operation on the parent container\n");
				return 1;
			} else if (tst->ss->external)
				return add_remove_device_container(fd, 1, &stb);
			/* Make sure it isn't in use (in 2.6 or later) */
			tfd = open(dv->devname, O_RDONLY|O_EXCL);
			if (tfd < 0) {
				fprintf(stderr, Name ": Cannot open %s: %s\n",
					dv->devname, strerror(errno));
				return 1;
			}
			remove_partitions(tfd);

			st = dup_super(tst);

			if (array.not_persistent==0)
				st->ss->load_super(st, tfd, NULL);

			if (!get_dev_size(tfd, dv->devname, &ldsize)) {
				close(tfd);
				return 1;
			}
			close(tfd);

			if (array.major_version == 0 &&
			    md_get_version(fd)%100 < 2) {
				if (ioctl(fd, HOT_ADD_DISK,
					  (unsigned long)stb.st_rdev)==0) {
					if (verbose >= 0)
						fprintf(stderr, Name ": hot added %s\n",
							dv->devname);
					continue;
				}

				fprintf(stderr, Name ": hot add failed for %s: %s\n",
					dv->devname, strerror(errno));
				return 1;
			}

			if (array.not_persistent == 0) {

				/* Make sure device is large enough */
				if (tst->ss->avail_size(tst, ldsize/512) <
				    array_size) {
					fprintf(stderr, Name ": %s not large enough to join array\n",
						dv->devname);
					return 1;
				}

				/* need to find a sample superblock to copy, and
				 * a spare slot to use
				 */
				for (j = 0; j < tst->max_devs; j++) {
					char *dev;
					int dfd;
					disc.number = j;
					if (ioctl(fd, GET_DISK_INFO, &disc))
						continue;
					if (disc.major==0 && disc.minor==0)
						continue;
					if ((disc.state & 4)==0) continue; /* sync */
					/* Looks like a good device to try */
					dev = map_dev(disc.major, disc.minor, 1);
					if (!dev) continue;
					dfd = dev_open(dev, O_RDONLY);
					if (dfd < 0) continue;
					if (tst->ss->load_super(tst, dfd,
								NULL)) {
						close(dfd);
						continue;
					}
					close(dfd);
					break;
				}
				if (!tst->sb) {
					fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
					return 1;
				}
				/* Possibly this device was recently part of the array
				 * and was temporarily removed, and is now being re-added.
				 * If so, we can simply re-add it.
				 */
				tst->ss->uuid_from_super(tst, duuid);

				/* re-add doesn't work for version-1 superblocks
				 * before 2.6.18 :-(
				 */
				if (array.major_version == 1 &&
				    get_linux_version() <= 2006018)
					;
				else if (st->sb) {
					st->ss->uuid_from_super(st, ouuid);
					if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
						/* looks close enough for now.  Kernel
						 * will worry about whether a bitmap
						 * based reconstruction is possible.
						 */
						struct mdinfo mdi;
						st->ss->getinfo_super(st, &mdi);
						disc.major = major(stb.st_rdev);
						disc.minor = minor(stb.st_rdev);
						disc.number = mdi.disk.number;
						disc.raid_disk = mdi.disk.raid_disk;
						disc.state = mdi.disk.state;
						if (dv->writemostly)
							disc.state |= 1 << MD_DISK_WRITEMOSTLY;
						if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
							if (verbose >= 0)
								fprintf(stderr, Name ": re-added %s\n", dv->devname);
							continue;
						}
						/* fall back on normal-add */
					}
				}
			} else {
				/* non-persistent. Must ensure that new drive
				 * is at least array.size big.
				 */
				if (ldsize/512 < array_size) {
					fprintf(stderr, Name ": %s not large enough to join array\n",
						dv->devname);
					return 1;
				}
			}
			/* in 2.6.17 and earlier, version-1 superblocks won't
			 * use the number we write, but will choose a free number.
			 * we must choose the same free number, which requires
			 * starting at 'raid_disks' and counting up
			 */
			for (j = array.raid_disks; j< tst->max_devs; j++) {
				disc.number = j;
				if (ioctl(fd, GET_DISK_INFO, &disc))
					break;
				if (disc.major==0 && disc.minor==0)
					break;
				if (disc.state & 8) /* removed */
					break;
			}
			disc.major = major(stb.st_rdev);
			disc.minor = minor(stb.st_rdev);
			disc.number =j;
			disc.state = 0;
			if (array.not_persistent==0) {
				int dfd;
				if (dv->writemostly)
					disc.state |= 1 << MD_DISK_WRITEMOSTLY;
				dfd = open(dv->devname, O_RDWR | O_EXCL);
				tst->ss->add_to_super(tst, &disc, dfd,
						      dv->devname);
				/* write_init_super will close 'dfd' */
				if (tst->ss->write_init_super(tst))
					return 1;
			} else if (dv->re_add) {
				/*  this had better be raid1.
				 * As we are "--re-add"ing we must find a spare slot
				 * to fill.
				 */
				char *used = malloc(array.raid_disks);
				memset(used, 0, array.raid_disks);
				for (j=0; j< tst->max_devs; j++) {
					mdu_disk_info_t disc2;
					disc2.number = j;
					if (ioctl(fd, GET_DISK_INFO, &disc2))
						continue;
					if (disc2.major==0 && disc2.minor==0)
						continue;
					if (disc2.state & 8) /* removed */
						continue;
					if (disc2.raid_disk < 0)
						continue;
					if (disc2.raid_disk > array.raid_disks)
						continue;
					used[disc2.raid_disk] = 1;
				}
				for (j=0 ; j<array.raid_disks; j++)
					if (!used[j]) {
						disc.raid_disk = j;
						disc.state |= (1<<MD_DISK_SYNC);
						break;
					}
			}
			if (dv->writemostly)
				disc.state |= (1 << MD_DISK_WRITEMOSTLY);
			if (ioctl(fd,ADD_NEW_DISK, &disc)) {
				fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
					dv->devname, j, strerror(errno));
				return 1;
			}
			if (verbose >= 0)
				fprintf(stderr, Name ": added %s\n", dv->devname);
			break;

		case 'r':
			/* hot remove */
			if (tst == &supertype_container_member) {
				fprintf(stderr, Name ": Cannot remove disks from a"
					" \'member\' array, perform this"
					" operation on the parent container\n");
				return 1;
			} else if (tst->ss->external)
				return add_remove_device_container(fd, 0, &stb);
			/* FIXME check that it is a current member */
			if (ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev)) {
				fprintf(stderr, Name ": hot remove failed "
					"for %s: %s\n",	dnprintable,
					strerror(errno));
				return 1;
			}
			if (verbose >= 0)
				fprintf(stderr, Name ": hot removed %s\n",
					dnprintable);
			break;

		case 'f': /* set faulty */
			/* FIXME check current member */
			if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
				fprintf(stderr, Name ": set device faulty failed for %s:  %s\n",
					dnprintable, strerror(errno));
				return 1;
			}
			if (verbose >= 0)
				fprintf(stderr, Name ": set %s faulty in %s\n",
					dnprintable, devname);
			break;
		}
	}
	return 0;

}

int autodetect(void)
{
	/* Open any md device, and issue the RAID_AUTORUN ioctl */
	int rv = 1;
	int fd = dev_open("9:0", O_RDONLY);
	if (fd >= 0) {
		if (ioctl(fd, RAID_AUTORUN, 0) == 0)
			rv = 0;
		close(fd);
	}
	return rv;
}
#endif
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
4f589ad0	4	* Copyright (C) 2001-2006 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
	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"
682c7051 NB	31	#include "md_u.h"
682c7051 NB	32	#include "md_p.h"
64c4757e	33
82b27616 NB	34	#define REGISTER_DEV _IO (MD_MAJOR, 1)
	35	#define START_MD _IO (MD_MAJOR, 2)
	36	#define STOP_MD _IO (MD_MAJOR, 3)
	37
64c4757e NB	38	int Manage_ro(char *devname, int fd, int readonly)
64c4757e NB	39	{
682c7051 NB	40	/* switch to readonly or rw
	41	*
	42	* requires >= 0.90.0
	43	* first check that array is runing
	44	* use RESTART_ARRAY_RW or STOP_ARRAY_RO
	45	*
	46	*/
	47	mdu_array_info_t array;
aba69144	48
682c7051 NB	49	if (md_get_version(fd) < 9000) {
	50	fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
	51	return 1;
	52	}
	53	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
	54	fprintf(stderr, Name ": %s does not appear to be active.\n",
	55	devname);
	56	return 1;
	57	}
aba69144	58
682c7051 NB	59	if (readonly>0) {
	60	if (ioctl(fd, STOP_ARRAY_RO, NULL)) {
	61	fprintf(stderr, Name ": failed to set readonly for %s: %s\n",
	62	devname, strerror(errno));
	63	return 1;
	64	}
	65	} else if (readonly < 0) {
	66	if (ioctl(fd, RESTART_ARRAY_RW, NULL)) {
82b27616	67	fprintf(stderr, Name ": failed to set writable for %s: %s\n",
682c7051 NB	68	devname, strerror(errno));
	69	return 1;
	70	}
	71	}
aba69144	72	return 0;
64c4757e NB	73	}
64c4757e NB	74
435d4ebb LB	75	#ifndef MDASSEMBLE
435d4ebb LB	76
91f068bf	77	int Manage_runstop(char *devname, int fd, int runstop, int quiet)
64c4757e	78	{
682c7051 NB	79	/* Run or stop the array. array must already be configured
	80	* required >= 0.90.0
	81	*/
682c7051	82	mdu_param_t param; /* unused */
82b27616 NB	83
	84	if (runstop == -1 && md_get_version(fd) < 9000) {
	85	if (ioctl(fd, STOP_MD, 0)) {
91f068bf NB	86	if (!quiet) fprintf(stderr, Name ": stopping device %s failed: %s\n",
91f068bf NB	87	devname, strerror(errno));
82b27616 NB	88	return 1;
	89	}
	90	}
aba69144	91
682c7051 NB	92	if (md_get_version(fd) < 9000) {
	93	fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
	94	return 1;
	95	}
82b27616	96	/*
682c7051 NB	97	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
	98	fprintf(stderr, Name ": %s does not appear to be active.\n",
	99	devname);
	100	return 1;
	101	}
82b27616	102	*/
682c7051 NB	103	if (runstop>0) {
	104	if (ioctl(fd, RUN_ARRAY, &param)) {
	105	fprintf(stderr, Name ": failed to run array %s: %s\n",
	106	devname, strerror(errno));
	107	return 1;
	108	}
8382f19b NB	109	if (quiet <= 0)
8382f19b NB	110	fprintf(stderr, Name ": started %s\n", devname);
682c7051	111	} else if (runstop < 0){
8382f19b NB	112	struct map_ent *map = NULL;
8382f19b NB	113	struct stat stb;
682c7051	114	if (ioctl(fd, STOP_ARRAY, NULL)) {
ab56093f	115	if (quiet==0)
91f068bf NB	116	fprintf(stderr, Name ": fail to stop array %s: %s\n",
91f068bf NB	117	devname, strerror(errno));
682c7051 NB	118	return 1;
682c7051 NB	119	}
ab56093f NB	120	if (quiet <= 0)
ab56093f NB	121	fprintf(stderr, Name ": stopped %s\n", devname);
8382f19b NB	122	if (fstat(fd, &stb) == 0) {
	123	int devnum;
	124	if (major(stb.st_rdev) == MD_MAJOR)
	125	devnum = minor(stb.st_rdev);
	126	else
	127	devnum = -1-(minor(stb.st_rdev)>>6);
	128	map_delete(&map, devnum);
	129	map_write(map);
	130	map_free(map);
	131	}
682c7051 NB	132	}
682c7051 NB	133	return 0;
64c4757e NB	134	}
64c4757e NB	135
dd0781e5 NB	136	int Manage_resize(char *devname, int fd, long long size, int raid_disks)
	137	{
	138	mdu_array_info_t info;
	139	if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
	140	fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
	141	devname, strerror(errno));
	142	return 1;
	143	}
	144	if (size >= 0)
	145	info.size = size;
	146	if (raid_disks > 0)
	147	info.raid_disks = raid_disks;
	148	if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
	149	fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n",
	150	devname, strerror(errno));
	151	return 1;
	152	}
	153	return 0;
	154	}
	155
b5e64645 NB	156	int Manage_reconfig(char *devname, int fd, int layout)
	157	{
	158	mdu_array_info_t info;
	159	if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
	160	fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
	161	devname, strerror(errno));
	162	return 1;
	163	}
	164	info.layout = layout;
	165	printf("layout set to %d\n", info.layout);
	166	if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
	167	fprintf(stderr, Name ": Cannot set layout for %s: %s\n",
	168	devname, strerror(errno));
	169	return 1;
	170	}
	171	return 0;
	172	}
dd0781e5	173
f7dd881f DW	174	static int
	175	add_remove_device_container(int fd, int add_remove, struct stat *stb)
	176	{
	177	int devnum = fd2devnum(fd);
	178	char *devname = devnum2devname(devnum);
	179	int sfd = devname ? connect_monitor(devname) : -1;
	180	struct md_message msg;
	181	int err = 0;
	182
	183	if (devname && sfd < 0) {
	184	fprintf(stderr, Name ": Cannot connect to monitor for %s: %s\n",
	185	devname, strerror(errno));
	186	free(devname);
	187	return 1;
	188	} else if (sfd < 0) {
	189	fprintf(stderr, Name ": Cannot determine container name for"
	190	" device number %d\n", devnum);
	191	return 1;
	192	}
	193
	194	if (add_remove)
	195	ack(sfd, 0, 0);
	196	else if (send_remove_device(sfd, stb->st_rdev, 0, 0) != 0) {
	197	fprintf(stderr, Name ": Failed to send \'%s device\'"
	198	" message to the container monitor\n",
	199	add_remove ? "add" : "remove");
	200	err = 1;
	201	}
	202
	203	/* check the reply */
	204	if (!err && receive_message(sfd, &msg, 0) != 0) {
	205	fprintf(stderr, Name ": Failed to receive an acknowledgement"
	206	" from the container monitor\n");
	207	err = 1;
	208	}
	209
	210	if (!err && msg.seq != 0) {
	211	fprintf(stderr, Name ": %s device failed error code %d\n",
	212	add_remove ? "Add" : "Remove", msg.seq);
	213	err = 1;
	214	}
	215
	216	free(devname);
	217	close(sfd);
	218
	219	return err;
	220	}
	221
64c4757e	222	int Manage_subdevs(char *devname, int fd,
dab6685f	223	mddev_dev_t devlist, int verbose)
cd29a5c8	224	{
682c7051 NB	225	/* do something to each dev.
	226	* devmode can be
	227	* 'a' - add the device
	228	* try HOT_ADD_DISK
	229	* If that fails EINVAL, try ADD_NEW_DISK
	230	* 'r' - remove the device HOT_REMOVE_DISK
b80da661 NB	231	* device can be 'faulty' or 'detached' in which case all
b80da661 NB	232	* matching devices are removed.
682c7051	233	* 'f' - set the device faulty SET_DISK_FAULTY
b80da661 NB	234	* device can be 'detached' in which case any device that
b80da661 NB	235	* is inaccessible will be marked faulty.
682c7051 NB	236	*/
	237	mdu_array_info_t array;
	238	mdu_disk_info_t disc;
7a3be72f	239	unsigned long long array_size;
b80da661	240	mddev_dev_t dv, next = NULL;
682c7051	241	struct stat stb;
b80da661	242	int j, jnext = 0;
0fbf459d	243	int tfd;
3da92f27	244	struct supertype st, tst;
fe80f49b NB	245	int duuid[4];
fe80f49b NB	246	int ouuid[4];
682c7051 NB	247
	248	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
	249	fprintf(stderr, Name ": cannot get array info for %s\n",
	250	devname);
	251	return 1;
	252	}
3da92f27	253
7a3be72f NB	254	/* array.size is only 32 bit and may be truncated.
	255	* So read from sysfs if possible, and record number of sectors
	256	*/
	257
	258	array_size = get_component_size(fd);
	259	if (array_size <= 0)
	260	array_size = array.size * 2;
	261
1686dc25	262	tst = super_by_fd(fd);
3da92f27 NB	263	if (!tst) {
	264	fprintf(stderr, Name ": unsupport array - version %d.%d\n",
	265	array.major_version, array.minor_version);
	266	return 1;
	267	}
	268
b80da661	269	for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
4a39c6f2	270	unsigned long long ldsize;
b80da661 NB	271	char dvname[20];
b80da661 NB	272	char *dnprintable = dv->devname;
4a39c6f2	273
b80da661 NB	274	next = dv->next;
	275	jnext = 0;
	276
	277	if (strcmp(dv->devname, "failed")==0 \|\|
	278	strcmp(dv->devname, "faulty")==0) {
	279	if (dv->disposition != 'r') {
	280	fprintf(stderr, Name ": %s only meaningful "
	281	"with -r, not -%c\n",
	282	dv->devname, dv->disposition);
	283	return 1;
	284	}
	285	for (; j < array.raid_disks + array.nr_disks ; j++) {
	286	disc.number = j;
	287	if (ioctl(fd, GET_DISK_INFO, &disc))
	288	continue;
	289	if (disc.major == 0 && disc.minor == 0)
	290	continue;
	291	if ((disc.state & 1) == 0) /* faulty */
	292	continue;
	293	stb.st_rdev = makedev(disc.major, disc.minor);
	294	next = dv;
	295	jnext = j+1;
	296	sprintf(dvname,"%d:%d", disc.major, disc.minor);
	297	dnprintable = dvname;
	298	break;
	299	}
	300	if (jnext == 0)
	301	continue;
	302	} else if (strcmp(dv->devname, "detached") == 0) {
	303	if (dv->disposition != 'r' && dv->disposition != 'f') {
	304	fprintf(stderr, Name ": %s only meaningful "
	305	"with -r of -f, not -%c\n",
	306	dv->devname, dv->disposition);
	307	return 1;
	308	}
	309	for (; j < array.raid_disks + array.nr_disks; j++) {
	310	int sfd;
	311	disc.number = j;
	312	if (ioctl(fd, GET_DISK_INFO, &disc))
	313	continue;
	314	if (disc.major == 0 && disc.minor == 0)
	315	continue;
	316	sprintf(dvname,"%d:%d", disc.major, disc.minor);
	317	sfd = dev_open(dvname, O_RDONLY);
	318	if (sfd >= 0) {
	319	close(sfd);
	320	continue;
	321	}
	322	if (dv->disposition == 'f' &&
	323	(disc.state & 1) == 1) /* already faulty */
	324	continue;
	325	if (errno != ENXIO)
	326	continue;
	327	stb.st_rdev = makedev(disc.major, disc.minor);
	328	next = dv;
	329	jnext = j+1;
	330	dnprintable = dvname;
	331	break;
	332	}
	333	if (jnext == 0)
	334	continue;
	335	} else {
	336	j = 0;
	337
338	if (stat(dv->devname, &stb)) {
339	fprintf(stderr, Name ": cannot find %s: %s\n",
340	dv->devname, strerror(errno));
341	return 1;
342	}
343	if ((stb.st_mode & S_IFMT) != S_IFBLK) {
344	fprintf(stderr, Name ": %s is not a "
345	"block device.\n",
346	dv->devname);
347	return 1;
348	}
682c7051	349	}
cd29a5c8	350	switch(dv->disposition){
682c7051	351	default:
c913b90e NB	352	fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
c913b90e NB	353	dv->devname, dv->disposition);
682c7051 NB	354	return 1;
682c7051 NB	355	case 'a':
4a39c6f2	356	/* add the device */
f7dd881f DW	357	if (tst == &supertype_container_member) {
	358	fprintf(stderr, Name ": Cannot add disks to a"
	359	" \'member\' array, perform this"
	360	" operation on the parent container\n");
	361	return 1;
	362	} else if (tst->ss->external)
	363	return add_remove_device_container(fd, 1, &stb);
f277ce36	364	/* Make sure it isn't in use (in 2.6 or later) */
0fbf459d NB	365	tfd = open(dv->devname, O_RDONLY\|O_EXCL);
0fbf459d NB	366	if (tfd < 0) {
d7eaf49f NB	367	fprintf(stderr, Name ": Cannot open %s: %s\n",
	368	dv->devname, strerror(errno));
	369	return 1;
	370	}
25037aa8	371	remove_partitions(tfd);
3da92f27	372
1686dc25	373	st = dup_super(tst);
3da92f27	374
fe80f49b	375	if (array.not_persistent==0)
3da92f27 NB	376	st->ss->load_super(st, tfd, NULL);
3da92f27 NB	377
beae1dfe	378	if (!get_dev_size(tfd, dv->devname, &ldsize)) {
4a39c6f2 NB	379	close(tfd);
4a39c6f2 NB	380	return 1;
4a39c6f2	381	}
0fbf459d	382	close(tfd);
fe80f49b	383
60d9a174 NB	384	if (array.major_version == 0 &&
60d9a174 NB	385	md_get_version(fd)%100 < 2) {
892debc8 NB	386	if (ioctl(fd, HOT_ADD_DISK,
892debc8 NB	387	(unsigned long)stb.st_rdev)==0) {
dab6685f NB	388	if (verbose >= 0)
	389	fprintf(stderr, Name ": hot added %s\n",
	390	dv->devname);
892debc8 NB	391	continue;
	392	}
	393
cd29a5c8	394	fprintf(stderr, Name ": hot add failed for %s: %s\n",
892debc8	395	dv->devname, strerror(errno));
cd29a5c8 NB	396	return 1;
cd29a5c8 NB	397	}
892debc8	398
fe80f49b NB	399	if (array.not_persistent == 0) {
fe80f49b NB	400
4a39c6f2	401	/* Make sure device is large enough */
3da92f27	402	if (tst->ss->avail_size(tst, ldsize/512) <
7a3be72f	403	array_size) {
4a39c6f2 NB	404	fprintf(stderr, Name ": %s not large enough to join array\n",
	405	dv->devname);
	406	return 1;
	407	}
	408
fe80f49b	409	/* need to find a sample superblock to copy, and
aba69144	410	* a spare slot to use
fe80f49b	411	*/
3da92f27	412	for (j = 0; j < tst->max_devs; j++) {
fe80f49b NB	413	char *dev;
	414	int dfd;
	415	disc.number = j;
	416	if (ioctl(fd, GET_DISK_INFO, &disc))
	417	continue;
	418	if (disc.major==0 && disc.minor==0)
	419	continue;
	420	if ((disc.state & 4)==0) continue; /* sync */
	421	/* Looks like a good device to try */
16c6fa80	422	dev = map_dev(disc.major, disc.minor, 1);
fe80f49b	423	if (!dev) continue;
16c6fa80	424	dfd = dev_open(dev, O_RDONLY);
fe80f49b	425	if (dfd < 0) continue;
3da92f27 NB	426	if (tst->ss->load_super(tst, dfd,
3da92f27 NB	427	NULL)) {
fe80f49b NB	428	close(dfd);
	429	continue;
	430	}
892debc8	431	close(dfd);
fe80f49b NB	432	break;
fe80f49b NB	433	}
3da92f27	434	if (!tst->sb) {
fe80f49b NB	435	fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
	436	return 1;
	437	}
	438	/* Possibly this device was recently part of the array
	439	* and was temporarily removed, and is now being re-added.
	440	* If so, we can simply re-add it.
	441	*/
3da92f27	442	tst->ss->uuid_from_super(tst, duuid);
7eae7080 NB	443
	444	/* re-add doesn't work for version-1 superblocks
	445	* before 2.6.18 :-(
	446	*/
	447	if (array.major_version == 1 &&
	448	get_linux_version() <= 2006018)
	449	;
3da92f27 NB	450	else if (st->sb) {
3da92f27 NB	451	st->ss->uuid_from_super(st, ouuid);
fe80f49b	452	if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
4d20d744 NB	453	/* looks close enough for now. Kernel
	454	* will worry about whether a bitmap
	455	* based reconstruction is possible.
fe80f49b NB	456	*/
fe80f49b NB	457	struct mdinfo mdi;
3da92f27	458	st->ss->getinfo_super(st, &mdi);
fe80f49b NB	459	disc.major = major(stb.st_rdev);
	460	disc.minor = minor(stb.st_rdev);
	461	disc.number = mdi.disk.number;
	462	disc.raid_disk = mdi.disk.raid_disk;
	463	disc.state = mdi.disk.state;
4d20d744 NB	464	if (dv->writemostly)
4d20d744 NB	465	disc.state \|= 1 << MD_DISK_WRITEMOSTLY;
fe80f49b NB	466	if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
	467	if (verbose >= 0)
	468	fprintf(stderr, Name ": re-added %s\n", dv->devname);
308e1801	469	continue;
fe80f49b NB	470	}
	471	/* fall back on normal-add */
	472	}
892debc8	473	}
4a39c6f2 NB	474	} else {
	475	/* non-persistent. Must ensure that new drive
	476	* is at least array.size big.
	477	*/
7a3be72f	478	if (ldsize/512 < array_size) {
4a39c6f2 NB	479	fprintf(stderr, Name ": %s not large enough to join array\n",
	480	dv->devname);
	481	return 1;
	482	}
892debc8	483	}
7eae7080 NB	484	/* in 2.6.17 and earlier, version-1 superblocks won't
	485	* use the number we write, but will choose a free number.
	486	* we must choose the same free number, which requires
	487	* starting at 'raid_disks' and counting up
	488	*/
3da92f27	489	for (j = array.raid_disks; j< tst->max_devs; j++) {
aa88f531	490	disc.number = j;
682c7051 NB	491	if (ioctl(fd, GET_DISK_INFO, &disc))
	492	break;
	493	if (disc.major==0 && disc.minor==0)
	494	break;
	495	if (disc.state & 8) /* removed */
	496	break;
	497	}
0df46c2a NB	498	disc.major = major(stb.st_rdev);
0df46c2a NB	499	disc.minor = minor(stb.st_rdev);
892debc8 NB	500	disc.number =j;
892debc8 NB	501	disc.state = 0;
fe80f49b	502	if (array.not_persistent==0) {
111d01fc	503	int dfd;
fe80f49b NB	504	if (dv->writemostly)
fe80f49b NB	505	disc.state \|= 1 << MD_DISK_WRITEMOSTLY;
111d01fc NB	506	dfd = open(dv->devname, O_RDWR \| O_EXCL);
	507	tst->ss->add_to_super(tst, &disc, dfd,
	508	dv->devname);
	509	/* write_init_super will close 'dfd' */
	510	if (tst->ss->write_init_super(tst))
fe80f49b NB	511	return 1;
	512	} else if (dv->re_add) {
	513	/* this had better be raid1.
	514	* As we are "--re-add"ing we must find a spare slot
	515	* to fill.
	516	*/
	517	char *used = malloc(array.raid_disks);
	518	memset(used, 0, array.raid_disks);
3da92f27	519	for (j=0; j< tst->max_devs; j++) {
fe80f49b NB	520	mdu_disk_info_t disc2;
	521	disc2.number = j;
	522	if (ioctl(fd, GET_DISK_INFO, &disc2))
	523	continue;
	524	if (disc2.major==0 && disc2.minor==0)
	525	continue;
	526	if (disc2.state & 8) /* removed */
	527	continue;
	528	if (disc2.raid_disk < 0)
	529	continue;
	530	if (disc2.raid_disk > array.raid_disks)
	531	continue;
	532	used[disc2.raid_disk] = 1;
	533	}
	534	for (j=0 ; j<array.raid_disks; j++)
	535	if (!used[j]) {
	536	disc.raid_disk = j;
	537	disc.state \|= (1<<MD_DISK_SYNC);
	538	break;
	539	}
	540	}
d8def61c NB	541	if (dv->writemostly)
d8def61c NB	542	disc.state \|= (1 << MD_DISK_WRITEMOSTLY);
682c7051	543	if (ioctl(fd,ADD_NEW_DISK, &disc)) {
f277ce36 NB	544	fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
f277ce36 NB	545	dv->devname, j, strerror(errno));
682c7051 NB	546	return 1;
682c7051 NB	547	}
dab6685f NB	548	if (verbose >= 0)
dab6685f NB	549	fprintf(stderr, Name ": added %s\n", dv->devname);
682c7051 NB	550	break;
	551
	552	case 'r':
	553	/* hot remove */
f7dd881f DW	554	if (tst == &supertype_container_member) {
	555	fprintf(stderr, Name ": Cannot remove disks from a"
	556	" \'member\' array, perform this"
	557	" operation on the parent container\n");
	558	return 1;
	559	} else if (tst->ss->external)
	560	return add_remove_device_container(fd, 0, &stb);
82b27616	561	/* FIXME check that it is a current member */
cd29a5c8	562	if (ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev)) {
b80da661 NB	563	fprintf(stderr, Name ": hot remove failed "
	564	"for %s: %s\n", dnprintable,
	565	strerror(errno));
682c7051 NB	566	return 1;
682c7051 NB	567	}
dab6685f	568	if (verbose >= 0)
b80da661 NB	569	fprintf(stderr, Name ": hot removed %s\n",
b80da661 NB	570	dnprintable);
682c7051 NB	571	break;
	572
	573	case 'f': /* set faulty */
	574	/* FIXME check current member */
cd29a5c8	575	if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
b83d95f3	576	fprintf(stderr, Name ": set device faulty failed for %s: %s\n",
b80da661	577	dnprintable, strerror(errno));
682c7051 NB	578	return 1;
682c7051 NB	579	}
dab6685f NB	580	if (verbose >= 0)
dab6685f NB	581	fprintf(stderr, Name ": set %s faulty in %s\n",
b80da661	582	dnprintable, devname);
682c7051 NB	583	break;
	584	}
	585	}
	586	return 0;
aba69144	587
64c4757e	588	}
1f48664b NB	589
	590	int autodetect(void)
	591	{
	592	/* Open any md device, and issue the RAID_AUTORUN ioctl */
	593	int rv = 1;
	594	int fd = dev_open("9:0", O_RDONLY);
	595	if (fd >= 0) {
	596	if (ioctl(fd, RAID_AUTORUN, 0) == 0)
	597	rv = 0;
	598	close(fd);
	599	}
	600	return rv;
	601	}
435d4ebb	602	#endif