File 0011-Grow-improve-error-message-is-grow-n2-used... of Package mdadm.5365

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File 0011-Grow-improve-error-message-is-grow-n2-used-on-Linear.patch of Package mdadm.5365

From 46643e1ad5ece5f1257b2d827e36231df44929a2 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Tue, 29 Jul 2014 13:37:42 +1000
Subject: [PATCH 017/359] Grow: improve error message is "--grow -n2" used on
 Linear arrays.
References: bsc#1081910

Linear arrays don't respond to setting raid-disks, only to
adding a device.

Reported-by: mulhern
Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1122146
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Coly Li <colyli@suse.de>

---
 Grow.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Grow.c b/Grow.c
index af59347..a9c8589 100644
--- a/Grow.c
+++ b/Grow.c
@@ -1028,7 +1028,12 @@ char *analyse_change(char *devname, struct mdinfo *info, struct reshape *re)
 
 	switch (info->array.level) {
 	default:
-		return "Cannot understand this RAID level";
+		return "No reshape is possibly for this RAID level";
+	case LEVEL_LINEAR:
+		if (info->delta_disks != UnSet)
+			return "Only --add is supported for LINEAR, setting --raid-disks is not needed";
+		else
+			return "Only --add is supported for LINEAR, other --grow options are not meaningful";
 	case 1:
 		/* RAID1 can convert to RAID1 with different disks, or
 		 * raid5 with 2 disks, or
-- 
2.16.1

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File 0011-Grow-improve-error-message-is-grow-n2-used-on-Linear.patch of Package mdadm.5365

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