From: NeilBrown <neilb@suse.de>
Date: Tue, 21 May 2013 06:50:05 +0000 (+1000)
Subject: Grow: E2BIG should be reporte differently if --data-offset was requested.
X-Git-Tag: mdadm-3.3-rc1~46
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=commitdiff_plain;h=d7e1f52bb83735932264ddce671c47b8acfc78c3

Grow: E2BIG should be reporte differently if --data-offset was requested.

In that case the problem is almost certainly that --data-offset is too big.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/Grow.c b/Grow.c
index 8794f4ec..82f3cc17 100644
--- a/Grow.c
+++ b/Grow.c
@@ -2289,6 +2289,11 @@ static int set_new_data_offset(struct mdinfo *sra, struct supertype *st,
 				  info2.new_data_offset) < 0) {
 			err = errno;
 			err = -1;
+			if (errno == E2BIG && data_offset != INVALID_SECTORS) {
+				pr_err("data-offset is too big for %s\n",
+				       dn);
+				goto release;
+			}
 			if (sd == sra->devs &&
 			    (errno == ENOENT || errno == E2BIG))
 				/* Early kernel, no 'new_offset' file,