From: NeilBrown <neilb@suse.de>
Date: Fri, 26 Jan 2007 08:57:01 +0000 (-0800)
Subject: [PATCH] md: make 'repair' actually work for raid1
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3eda22d19b76b15ef3420b251bd47a0ba0127589;p=linux-beck.git

[PATCH] md: make 'repair' actually work for raid1

When 'repair' finds a block that is different one the various parts of the
mirror.  it is meant to write a chosen good version to the others.  However it
currently writes out the original data to each.  The memcpy to make all the
data the same is missing.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 164b25dca101..ab74d40cac98 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1266,6 +1266,11 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
 					sbio->bi_sector = r1_bio->sector +
 						conf->mirrors[i].rdev->data_offset;
 					sbio->bi_bdev = conf->mirrors[i].rdev->bdev;
+					for (j = 0; j < vcnt ; j++)
+						memcpy(page_address(sbio->bi_io_vec[j].bv_page),
+						       page_address(pbio->bi_io_vec[j].bv_page),
+						       PAGE_SIZE);
+
 				}
 			}
 	}