mdadm: load default sysfs attributes after assemblation

[thirdparty/mdadm.git] / Query.c

diff --git a/Query.c b/Query.c
index e1743ef3685e7d79233b71b4315dd2ccfdbf1fa2..23fbf8aa15eb20eb86fdac3fd6e49846e1fd5b0c 100644 (file)
--- a/Query.c
+++ b/Query.c
@@ -1,7 +1,7 @@
 /*
  * mdadm - manage Linux "md" devices aka RAID arrays.
  *
- * Copyright (C) 2002-2006 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2002-2009 Neil Brown <neilb@suse.de>
  *
  *
  *    This program is free software; you can redistribute it and/or modify
@@ -19,12 +19,7 @@
  *    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"
@@ -37,74 +32,90 @@ int Query(char *dev)
         * 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;
+       int fd;
+       int ioctlerr, staterr;
+       int superror;
+       int level, raid_disks, spare_disks;
        struct mdinfo info;
-       mdu_array_info_t array;
-       void *super;
+       struct mdinfo *sra;
        struct supertype *st = NULL;
-
        unsigned long long larray_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;
+       if (fstat(fd, &stb) < 0)
+               staterr = errno;
+       else
+               staterr = 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;
 
-       fstat(fd, &stb);
+               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 (vers>=9000 && !ioctlerr) {
+       if (!ioctlerr && !staterr) {
                if (!get_dev_size(fd, NULL, &larray_size))
                        larray_size = 0;
        }
 
-       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 && major(stb.st_rdev) != MD_MAJOR)
+               printf("%s: is not an md array\n", dev);
        else if (ioctlerr)
                printf("%s: is an md device, but gives \"%s\" when queried\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");
        }
        st = guess_super(fd);
-       if (st) {
-               superror = st->ss->load_super(st, fd, &super, dev);
-               superrno = errno;
-       } else
+       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... */
-               st->ss->getinfo_super(&info, super);
-               if (st->ss->major == 0) {
-                       mddev = get_md_name(info.array.md_minor);
+               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_get_version(fd) >= 9000 &&
-                                   ioctl(fd, GET_ARRAY_INFO, &array)>= 0) {
-                                       if (ioctl(fd, GET_DISK_INFO, &disc) >= 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
@@ -113,7 +124,7 @@ int Query(char *dev)
                                close(fd);
                        }
                } else {
-                       activity = "unknown";
+                       activity = "inactive";
                        mddev = "array";
                }
                printf("%s: device %d in %d device %s %s %s.  Use mdadm --examine for more detail.\n",
@@ -122,9 +133,8 @@ int Query(char *dev)
                       activity,
                       map_num(pers, info.array.level),
                       mddev);
-               if (st->ss->major == 0)
+               if (st->ss == &super0)
                        put_md_name(mddev);
        }
        return 0;
 }
-