From 627f2f68731ebd78ee39e23bb41ec1307f2f9061 Mon Sep 17 00:00:00 2001 From: Arne Jansen Date: Thu, 9 Feb 2012 15:09:02 +0100 Subject: [PATCH] btrfs: don't check DUP chunks twice Because scrub enumerates the dev extent tree to find the chunks to scrub, it currently finds each DUP chunk twice and also scrubs it twice. This patch makes sure that scrub_chunk only checks that part of the chunk the dev extent has been found for. This only changes the behaviour for DUP chunks. Reported-and-tested-by: Stefan Behrens Signed-off-by: Arne Jansen --- fs/btrfs/scrub.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 9770cc5bfb76c..abc0fbffa510f 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1367,7 +1367,8 @@ out: } static noinline_for_stack int scrub_chunk(struct scrub_dev *sdev, - u64 chunk_tree, u64 chunk_objectid, u64 chunk_offset, u64 length) + u64 chunk_tree, u64 chunk_objectid, u64 chunk_offset, u64 length, + u64 dev_offset) { struct btrfs_mapping_tree *map_tree = &sdev->dev->dev_root->fs_info->mapping_tree; @@ -1391,7 +1392,8 @@ static noinline_for_stack int scrub_chunk(struct scrub_dev *sdev, goto out; for (i = 0; i < map->num_stripes; ++i) { - if (map->stripes[i].dev == sdev->dev) { + if (map->stripes[i].dev == sdev->dev && + map->stripes[i].physical == dev_offset) { ret = scrub_stripe(sdev, map, i, chunk_offset, length); if (ret) goto out; @@ -1487,7 +1489,7 @@ int scrub_enumerate_chunks(struct scrub_dev *sdev, u64 start, u64 end) break; } ret = scrub_chunk(sdev, chunk_tree, chunk_objectid, - chunk_offset, length); + chunk_offset, length, found_key.offset); btrfs_put_block_group(cache); if (ret) break; -- 2.39.5