imsm: metadata only supports a global 'data_offset'

When creating a volume a drive must have free space starting at the same
location as all the other drives in the array.

diff --git a/super-intel.c b/super-intel.c
index 42d93f6b53c72bc4e2fd387801283e994bac6b63..41f44d0a2748386aea278e2dbbdd638670a990f7 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -1388,9 +1388,11 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
 
        if (!dev) {
                /* General test:  make sure there is space for
-                * 'raiddisks' device extents of size 'size'.
+                * 'raiddisks' device extents of size 'size' at a given
+                * offset
                 */
                unsigned long long minsize = size*2 /* convert to blocks */;
+               unsigned long long start_offset = ~0ULL;
                int dcnt = 0;
                if (minsize == 0)
                        minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
@@ -1406,6 +1408,13 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
                                esize = e[i].start - pos;
                                if (esize >= minsize)
                                        found = 1;
+                               if (found && start_offset == ~0ULL) {
+                                       start_offset = pos;
+                                       break;
+                               } else if (found && pos != start_offset) {
+                                       found = 0;
+                                       break;
+                               }
                                pos = e[i].start + e[i].size;
                                i++;
                        } while (e[i-1].size);