On 25.08.2017 18:11, josef@xxxxxxxxxxxxxx wrote:
> From: Josef Bacik <jbacik@xxxxxx>
>
> While looking at a log of a corrupted fs I needed to verify we were
> missing csums for a given range. Make this easier by printing out the
> range of bytes a csum item covers.
>
> Signed-off-by: Josef Bacik <jbacik@xxxxxx>
Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
> ---
> v1->v2:
> - print the byte range instead of just the length
>
> print-tree.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/print-tree.c b/print-tree.c
> index 5927ed3..2aead6a 100644
> --- a/print-tree.c
> +++ b/print-tree.c
> @@ -1103,9 +1103,16 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *eb)
> case BTRFS_CSUM_ITEM_KEY:
> printf("\t\tcsum item\n");
> break;
> - case BTRFS_EXTENT_CSUM_KEY:
> - printf("\t\textent csum item\n");
> + case BTRFS_EXTENT_CSUM_KEY: {
> + u16 csum_size =
> + btrfs_super_csum_size(root->fs_info->super_copy);
> + u32 size = (item_size / csum_size) *
> + root->fs_info->sectorsize;
> + printf("\t\textent csum item range %llu-%llu\n",
> + (unsigned long long)disk_key.offset,
> + (unsigned long long)disk_key.offset + size);
> break;
> + }
> case BTRFS_EXTENT_DATA_KEY:
> print_file_extent_item(eb, item, i, ptr);
> break;
>
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