imsm: FIX: Do not continue reshape when backup exists

When backup exists in copy area reshape cannot be continued.
In such situation, array is in unstable state.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/super-intel.c b/super-intel.c
index ff029d4fb5b603331803ecfe3bfcf474be91e360..06831c3e08a0a0835f5b103156fc946c359f6737 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -8744,6 +8744,13 @@ static int imsm_manage_reshape(
        /* initialize migration record for start condition */
        if (sra->reshape_progress == 0)
                init_migr_record_imsm(st, dev, sra);
+       else {
+               if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) {
+                       dprintf("imsm: cannot restart migration when data "
+                               "are present in copy area.\n");
+                       goto abort;
+               }
+       }
 
        /* size for data */
        buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512;