Detail: fix for an imsm container with a spare

[thirdparty/mdadm.git] / Detail.c

diff --git a/Detail.c b/Detail.c
index c97172c7fa4459c695185908374315422576e03e..001012a211cb38e85c8499222a0a0756f8f880ee 100644 (file)
--- a/Detail.c
+++ b/Detail.c
@@ -1,7 +1,7 @@
 /*
  * mdadm - manage Linux "md" devices aka RAID arrays.
  *
- * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2009 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"
@@ -127,12 +122,25 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
                    disk.minor == 0)
                        continue;
                if ((dv=map_dev(disk.major, disk.minor, 1))) {
-                       if ((!st || !st->sb) &&
+                       /* 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.
+                        */
+                       int free_spare = memcmp(uuid_match_any,
+                                               info.uuid,
+                                               sizeof(uuid_match_any)) == 0;
+                       if ((!st || !st->sb || free_spare) &&
                            (array.raid_disks == 0 || 
                             (disk.state & (1<<MD_DISK_ACTIVE)))) {
                                /* try to read the superblock from this device
                                 * to get more info
                                 */
+                               if (free_spare)
+                                       st->ss->free_super(st);
                                int fd2 = dev_open(dv, O_RDONLY);
                                if (fd2 >=0 && st &&
                                    st->ss->load_super(st, fd2, NULL) == 0) {
@@ -173,26 +181,39 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
                if (st && st->sb) {
                        struct mdinfo info;
                        char nbuf[64];
+                       struct map_ent *mp, *map = NULL;
                        st->ss->getinfo_super(st, &info);
                        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;
+                       mp = map_by_devnum(&map, fd2devnum(fd));
+                       if (mp && mp->path &&
+                           strncmp(mp->path, "/dev/md/", 8) == 0)
+                               printf("MD_DEVNAME=%s\n", mp->path+8);
                }
                goto out;
        }
 
        if (brief) {
                mdu_bitmap_file_t bmf;
-               if (array.raid_disks)
-                       printf("ARRAY %s level=%s num-devices=%d", dev,
-                              c?c:"-unknown-",
-                              array.raid_disks );
-               else
-                       printf("ARRAY %s level=container num-devices=%d",
-                              dev, array.nr_disks);
-
+               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);
@@ -216,7 +237,7 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
                struct mdstat_ent *ms = mdstat_read(0, 0);
                struct mdstat_ent *e;
                int devnum = array.md_minor;
-               if (major(stb.st_rdev) != MD_MAJOR)
+               if (major(stb.st_rdev) == get_mdp_major())
                        devnum = -1 - devnum;
 
                for (e=ms; e; e=e->next)
@@ -250,8 +271,8 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
                                unsigned long long dsize = get_component_size(fd);
                                if (dsize > 0)
                                        printf("  Used Dev Size : %llu%s\n",
-                                              dsize,
-                                        human_size((long long)dsize<<10));
+                                              dsize/2,
+                                        human_size((long long)dsize<<9));
                                else
                                        printf("  Used Dev Size : unknown\n");
                        } else
@@ -519,3 +540,44 @@ out:
        close(fd);
        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;
+}