[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: Chris Wright <chrisw@sous-sol.org>

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 99d453fd71622d374fc0a1f5305da3452a1c39a3..77b19b4d0a116df3b4e9279d8978d8fa72ef1970 100644 (file)
--- 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);
+
                                }
                        }
        }