commit 5c5ea85b4deedf5e7491a905bbb4f4a3bc284f2c
Author: Alexey Obitotskiy <aleksey.obitotskiy@intel.com>
Date:   Tue May 9 12:25:43 2017 +0200

    imsm: allow drives in a container regardless of sector size
    
    IMSM doesn't allow to create arrays including drives with different
    sector sizes. The initial idea was not to permit to combine drives
    with different sector size in the same container. The problem is it
    only worked for array creation. On array assemble there are no
    calls to metadata handlers to see if drive is suitable for a container
    (e.g. as a spare) and it leads to wrong configuration.
    
    Revert the change and allow adding drives with different sector size
    to the container.
    
    Signed-off-by: Alexey Obitotskiy <aleksey.obitotskiy@intel.com>
    Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
    Signed-off-by: Jes Sorensen <jsorensen@fb.com>

diff --git a/super-intel.c b/super-intel.c
index e13c940..2a5d848 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -5716,12 +5716,6 @@ static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
 	if (super->sector_size == 0) {
 		/* this a first device, so sector_size is not set yet */
 		super->sector_size = member_sector_size;
-	} else if (member_sector_size != super->sector_size) {
-		pr_err("Mixing between different sector size is forbidden, aborting...\n");
-		if (dd->devname)
-			free(dd->devname);
-		free(dd);
-		return 1;
 	}
 
 	/* clear migr_rec when adding disk to container */