From 50b9c10da0e7c153744b548680147dc8cc7c4c72 Mon Sep 17 00:00:00 2001

From: Pawel Baldysiak <pawel.baldysiak@intel.com>

Date: Thu, 28 Sep 2017 14:41:15 +0200

Subject: [PATCH 09/12] imsm: Write empty PPL header if assembling

 regular clean array.

If array was initially assembled with kernel without PPL support -

initial header was never written to the drive.

If initial resync was completed and system is rebooted to kernel with

PPL support - mdadm prevents from assembling normal clean array

due to lack of valid PPL.

Write empty header when assemble normal clean array, so the

its assamble is no longer blocked.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>

Signed-off-by: Jes Sorensen <jsorensen@fb.com>

---

 super-intel.c | 4 +++-

 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/super-intel.c b/super-intel.c

index 7b2327b..501d0c3 100644

--- a/super-intel.c

+++ b/super-intel.c

@@ -6225,7 +6225,9 @@ out:

 	}

 	if (ret == 1) {

-		if (map->map_state == IMSM_T_STATE_UNINITIALIZED)

+		if (map->map_state == IMSM_T_STATE_UNINITIALIZED ||

+		   (map->map_state == IMSM_T_STATE_NORMAL &&

+		   !(dev->vol.dirty & RAIDVOL_DIRTY)))

 			ret = st->ss->write_init_ppl(st, info, d->fd);

 		else

 			info->mismatch_cnt++;

-- 

2.7.4