mdadm/0049-Grow-set-component-size-prior-to-array-size.patch

From 07c45a1871df0a70beb8da80d11601d33c7a5de2 Mon Sep 17 00:00:00 2001
From: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Date: Mon, 5 Jun 2017 16:09:44 +0200
Subject: [PATCH] Grow: set component size prior to array size
Git-commit: 07c45a1871df0a70beb8da80d11601d33c7a5de2
Patch-mainline: mdadm-4.0+
References: bsc#1069165, bsc#1069167, bsc#1068030

It is a partial revert of commit 758b327cf5a7 ("Grow: Remove unnecessary
optimization"). For native metadata component size is set in kernel for
entire disk space. As external metadata supports multiple arrays within
one disk, the component size is set to array size. If component size is
not updated prior to array size update, the grow operation fails.

Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>

---
 Grow.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Grow.c b/Grow.c
index ecf5ca0..4ecb1d8 100644
--- a/Grow.c
+++ b/Grow.c
@@ -1977,6 +1977,8 @@ int Grow_reshape(char *devname, int fd,
 		 */
 		min_csize = 0;
 		for (mdi = sra->devs; mdi; mdi = mdi->next) {
+			sysfs_set_num(sra, mdi, "size", s->size == MAX_SIZE ? 0
+				      : s->size);
 			if (array.not_persistent == 0 &&
 			    array.major_version == 0 &&
 			    get_linux_version() < 3001000) {
-- 
2.12.0