| /* |
| * 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 "dlink.h" |
| |
| #if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN) |
| #error no endian defined |
| #endif |
| #include "md_u.h" |
| #include "md_p.h" |
| int Examine(struct mddev_dev *devlist, int brief, int export, int scan, |
| int SparcAdjust, struct supertype *forcest, |
| char *homehost) |
| { |
| |
| /* Read the raid superblock from a device and |
| * display important content. |
| * |
| * If cannot be found, print reason: too small, bad magic |
| * |
| * Print: |
| * version, ctime, level, size, raid+spare+ |
| * prefered minor |
| * uuid |
| * |
| * utime, state etc |
| * |
| * If (brief) gather devices for same array and just print a mdadm.conf line including devices= |
| * if devlist==NULL, use conf_get_devs() |
| */ |
| int fd; |
| int rv = 0; |
| int err = 0; |
| |
| struct array { |
| struct supertype *st; |
| struct mdinfo info; |
| void *devs; |
| struct array *next; |
| int spares; |
| } *arrays = NULL; |
| |
| for (; devlist ; devlist=devlist->next) { |
| struct supertype *st; |
| int have_container = 0; |
| |
| fd = dev_open(devlist->devname, O_RDONLY); |
| if (fd < 0) { |
| if (!scan) { |
| fprintf(stderr,Name ": cannot open %s: %s\n", |
| devlist->devname, strerror(errno)); |
| rv = 1; |
| } |
| err = 1; |
| } |
| else { |
| int container = 0; |
| if (forcest) |
| st = dup_super(forcest); |
| else if (must_be_container(fd)) { |
| /* might be a container */ |
| st = super_by_fd(fd, NULL); |
| container = 1; |
| } else |
| st = guess_super(fd); |
| if (st) { |
| err = 1; |
| st->ignore_hw_compat = 1; |
| if (!container) |
| err = st->ss->load_super(st, fd, |
| (brief||scan) ? NULL |
| :devlist->devname); |
| if (err && st->ss->load_container) { |
| err = st->ss->load_container(st, fd, |
| (brief||scan) ? NULL |
| :devlist->devname); |
| if (!err) |
| have_container = 1; |
| } |
| st->ignore_hw_compat = 0; |
| } else { |
| if (!brief) { |
| fprintf(stderr, Name ": No md superblock detected on %s.\n", devlist->devname); |
| rv = 1; |
| } |
| err = 1; |
| } |
| close(fd); |
| } |
| if (err) |
| continue; |
| |
| if (SparcAdjust) |
| st->ss->update_super(st, NULL, "sparc2.2", |
| devlist->devname, 0, 0, NULL); |
| /* Ok, its good enough to try, though the checksum could be wrong */ |
| |
| if (brief && st->ss->brief_examine_super == NULL) { |
| if (!scan) |
| fprintf(stderr, Name ": No brief listing for %s on %s\n", |
| st->ss->name, devlist->devname); |
| } else if (brief) { |
| struct array *ap; |
| char *d; |
| for (ap=arrays; ap; ap=ap->next) { |
| if (st->ss == ap->st->ss && |
| st->ss->compare_super(ap->st, st)==0) |
| break; |
| } |
| if (!ap) { |
| ap = malloc(sizeof(*ap)); |
| ap->devs = dl_head(); |
| ap->next = arrays; |
| ap->spares = 0; |
| ap->st = st; |
| arrays = ap; |
| st->ss->getinfo_super(st, &ap->info, NULL); |
| } else |
| st->ss->getinfo_super(st, &ap->info, NULL); |
| if (!have_container && |
| !(ap->info.disk.state & (1<<MD_DISK_SYNC))) |
| ap->spares++; |
| d = dl_strdup(devlist->devname); |
| dl_add(ap->devs, d); |
| } else if (export) { |
| if (st->ss->export_examine_super) |
| st->ss->export_examine_super(st); |
| st->ss->free_super(st); |
| } else { |
| printf("%s:\n",devlist->devname); |
| st->ss->examine_super(st, homehost); |
| st->ss->free_super(st); |
| } |
| } |
| if (brief) { |
| struct array *ap; |
| for (ap=arrays; ap; ap=ap->next) { |
| char sep='='; |
| char *d; |
| int newline = 0; |
| |
| ap->st->ss->brief_examine_super(ap->st, brief > 1); |
| if (ap->spares) |
| newline += printf(" spares=%d", ap->spares); |
| if (brief > 1) { |
| newline += printf(" devices"); |
| for (d=dl_next(ap->devs); d!= ap->devs; d=dl_next(d)) { |
| printf("%c%s", sep, d); |
| sep=','; |
| } |
| } |
| if (ap->st->ss->brief_examine_subarrays) { |
| if (newline) |
| printf("\n"); |
| ap->st->ss->brief_examine_subarrays(ap->st, brief > 1); |
| } |
| ap->st->ss->free_super(ap->st); |
| /* FIXME free ap */ |
| if (ap->spares || brief > 1) |
| printf("\n"); |
| } |
| } |
| return rv; |
| } |