For metadata dump (fs restored by btrfs-image), since no data is restored check sum verification will definitely report error.
Add such check in check_csums() and prompt for user. Issue: #103 Signed-off-by: Qu Wenruo <[email protected]> --- check/main.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/check/main.c b/check/main.c index 891a6d797756..15c94543946a 100644 --- a/check/main.c +++ b/check/main.c @@ -5601,6 +5601,7 @@ static int check_csums(struct btrfs_root *root) int ret; u64 data_len; unsigned long leaf_offset; + bool verify_csum = !!check_data_csum; root = root->fs_info->csum_root; if (!extent_buffer_uptodate(root->node)) { @@ -5623,6 +5624,16 @@ static int check_csums(struct btrfs_root *root) path.slots[0]--; ret = 0; + /* + * For metadata dump (btrfs-image) all data is wiped so verifying data + * csum is meaningless and will always report csum error. + */ + if (check_data_csum && (btrfs_super_flags(root->fs_info->super_copy) & + (BTRFS_SUPER_FLAG_METADUMP | BTRFS_SUPER_FLAG_METADUMP_V2))) { + printf("skip data csum verification for metadata dump\n"); + verify_csum = false; + } + while (1) { if (path.slots[0] >= btrfs_header_nritems(path.nodes[0])) { ret = btrfs_next_leaf(root, &path); @@ -5644,7 +5655,7 @@ static int check_csums(struct btrfs_root *root) data_len = (btrfs_item_size_nr(leaf, path.slots[0]) / csum_size) * root->fs_info->sectorsize; - if (!check_data_csum) + if (!verify_csum) goto skip_csum_check; leaf_offset = btrfs_item_ptr_offset(leaf, path.slots[0]); ret = check_extent_csums(root, key.offset, data_len, -- 2.16.3 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
