Manage: be more careful about --add attempts.

[thirdparty/mdadm.git] / util.c

diff --git a/util.c b/util.c
index 0cb251c31d923d85a6a8fb198b854d9cdc2b6f49..c9976218962ab0ddeda0d4ff7ad40ab8c45b8b74 100644 (file)
--- a/util.c
+++ b/util.c
@@ -320,6 +320,36 @@ int enough(int level, int raid_disks, int layout, int clean,
        }
 }
 
+int enough_fd(int fd)
+{
+       struct mdu_array_info_s array;
+       struct mdu_disk_info_s disk;
+       int avail_disks = 0;
+       int i;
+       char *avail;
+
+       if (ioctl(fd, GET_ARRAY_INFO, &array) != 0 ||
+           array.raid_disks <= 0)
+               return 0;
+       avail = calloc(array.raid_disks, 1);
+       for (i=0; i<array.raid_disks + array.nr_disks; i++) {
+               disk.number = i;
+               if (ioctl(fd, GET_DISK_INFO, &disk) != 0)
+                       continue;
+               if (! (disk.state & (1<<MD_DISK_SYNC)))
+                       continue;
+               if (disk.raid_disk < 0 || disk.raid_disk >= array.raid_disks)
+                       continue;
+               avail_disks++;
+               avail[disk.raid_disk] = 1;
+       }
+       /* This is used on an active array, so assume it is clean */
+       return enough(array.level, array.raid_disks, array.layout,
+                     1,
+                     avail, avail_disks);
+}
+
+
 const int uuid_match_any[4] = { ~0, ~0, ~0, ~0 };
 int same_uuid(int a[4], int b[4], int swapuuid)
 {