From ddaf22abaa831763e75775e6d4c7693504237997 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 6 Jan 2006 00:20:19 -0800 Subject: [PATCH] md: attempt to auto-correct read errors in raid1 On a read-error we suspend the array, then synchronously read the block from other arrays until we find one where we can read it. Then we try writing the good data back everywhere and make sure it works. If any write or subsequent read fails, only then do we fail the device out of the array. To be able to suspend the array, we need to also keep track of how many requests are queued for handling by raid1d. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/md.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index 64e7da3701a..1364a1c97e6 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -461,6 +461,7 @@ int sync_page_io(struct block_device *bdev, sector_t sector, int size, bio_put(bio); return ret; } +EXPORT_SYMBOL(sync_page_io); static int read_disk_sb(mdk_rdev_t * rdev, int size) { -- cgit v1.2.3