/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2002-2009 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* 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
+ * Email: <neilb@suse.de>
*/
#include "mdadm.h"
int Query(char *dev)
{
/* Give a brief description of the device,
- * whether it is an md device and whether it has
+ * whether it is an md device and whether it has
* a superblock
*/
- int fd = open(dev, O_RDONLY, 0);
- int vers;
- int ioctlerr;
- int superror, superrno;
- mdp_super_t super;
- mdu_array_info_t array;
+ int fd;
+ int ioctlerr, staterr;
+ int superror;
+ int level, raid_disks, spare_disks;
+ struct mdinfo info;
+ struct mdinfo *sra;
+ struct supertype *st = NULL;
unsigned long long larray_size;
- unsigned long array_size;
struct stat stb;
char *mddev;
mdu_disk_info_t disc;
char *activity;
+ fd = open(dev, O_RDONLY);
if (fd < 0){
- fprintf(stderr, Name ": cannot open %s: %s\n",
- dev, strerror(errno));
+ pr_err("cannot open %s: %s\n", dev, strerror(errno));
return 1;
}
- vers = md_get_version(fd);
- if (ioctl(fd, GET_ARRAY_INFO, &array)<0)
- ioctlerr = errno;
- else ioctlerr = 0;
- superror = load_super(fd, &super);
- superrno = errno;
-
- fstat(fd, &stb);
+ if (fstat(fd, &stb) < 0)
+ staterr = errno;
+ else
+ staterr = 0;
- if (vers>=9000 && !ioctlerr) {
-#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;
+ ioctlerr = 0;
+
+ sra = sysfs_read(fd, dev, GET_DISKS | GET_LEVEL | GET_DEVS | GET_STATE);
+ if (sra) {
+ level = sra->array.level;
+ raid_disks = sra->array.raid_disks;
+ spare_disks = sra->array.spare_disks;
+ } else {
+ mdu_array_info_t array;
+
+ if (md_get_array_info(fd, &array) < 0) {
+ ioctlerr = errno;
+ level = -1;
+ raid_disks = -1;
+ spare_disks = -1;
+ } else {
+ level = array.level;
+ raid_disks = array.raid_disks;
+ spare_disks = array.spare_disks;
+ }
+ }
+
+ if (!ioctlerr && !staterr) {
+ if (!get_dev_size(fd, NULL, &larray_size))
+ larray_size = 0;
}
- close(fd);
- if (vers < 0)
- printf("%s: is not an md array\n", dev);
- else if (vers < 9000)
- printf("%s: is an md device, but kernel cannot provide details\n", dev);
- else if (ioctlerr == ENODEV)
+ if (ioctlerr == ENODEV)
printf("%s: is an md device which is not active\n", dev);
else if (ioctlerr)
printf("%s: is an md device, but gives \"%s\" when queried\n",
dev, strerror(ioctlerr));
+ else if (staterr)
+ printf("%s: is not a valid md device, returning %s\n",
+ dev, strerror(ioctlerr));
else {
printf("%s: %s %s %d devices, %d spare%s. Use mdadm --detail for more detail.\n",
- dev,
- human_size_brief(larray_size),
- map_num(pers, array.level),
- array.raid_disks,
- array.spare_disks, array.spare_disks==1?"":"s");
+ dev, human_size_brief(larray_size,IEC),
+ map_num(pers, level), raid_disks,
+ spare_disks, spare_disks == 1 ? "" : "s");
}
- switch(superror) {
- case 1:
- printf("%s: cannot find device size: %s\n",
- dev, strerror(superrno));
- break;
- case 2:
- printf("%s: is too small to be an md component.\n",
- dev);
- break;
- case 3:
- printf("%s: Cannot seek to superblock: %s\n",
- dev, strerror(superrno));
- break;
- case 4:
- printf("%s: Cannot read md superblock.\n",
- dev);
- break;
- case 5:
- printf("%s: No md super block found, not an md component.\n",
- dev);
- break;
- case 6:
- printf("%s: md superblock present with wrong version: %d\n",
- dev, super.major_version);
- break;
- default:
+ st = guess_super(fd);
+ if (st && st->ss->compare_super != NULL)
+ superror = st->ss->load_super(st, fd, dev);
+ else
+ superror = -1;
+ close(fd);
+ if (superror == 0) {
/* array might be active... */
- mddev = get_md_name(super.md_minor);
- disc.number = super.this_disk.number;
- activity = "undetected";
- if (mddev && (fd = open(mddev, O_RDONLY))>=0) {
- if (md_get_version(fd) >= 9000 &&
- ioctl(fd, GET_ARRAY_INFO, &array)>= 0) {
- if (ioctl(fd, GET_DISK_INFO, &disc) >= 0 &&
- makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev)
- activity = "active";
- else
- activity = "mismatch";
+ int uuid[4];
+ struct map_ent *me, *map = NULL;
+ st->ss->getinfo_super(st, &info, NULL);
+ st->ss->uuid_from_super(st, uuid);
+ me = map_by_uuid(&map, uuid);
+ if (me) {
+ mddev = me->path;
+ disc.number = info.disk.number;
+ activity = "undetected";
+ if (mddev && (fd = open(mddev, O_RDONLY))>=0) {
+ if (md_array_active(fd)) {
+ if (md_get_disk_info(fd, &disc) >= 0 &&
+ makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev)
+ activity = "active";
+ else
+ activity = "mismatch";
+ }
+ close(fd);
}
- close(fd);
+ } else {
+ activity = "inactive";
+ mddev = "array";
}
- printf("%s: device %d in %d device %s %s md%d. Use mdadm --examine for more detail.\n",
- dev,
- super.this_disk.number, super.raid_disks,
+ printf("%s: device %d in %d device %s %s %s. Use mdadm --examine for more detail.\n",
+ dev,
+ info.disk.number, info.array.raid_disks,
activity,
- map_num(pers, super.level),
- super.md_minor);
- break;
+ map_num(pers, info.array.level),
+ mddev);
+ if (st->ss == &super0)
+ put_md_name(mddev);
}
return 0;
}
-
-
projects / thirdparty / mdadm.git / blobdiff