btrfs-progs: print-tree: Output stripe dev uuid

Add output for dev uuid for print_chunk().

Quite useful to debug temporary btrfs in btrfs-convert.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/print-tree.c b/print-tree.c
index 7ddf400..4d4c3a2 100644 (file)
--- a/print-tree.c
+++ b/print-tree.c
@@ -231,9 +231,17 @@ void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
        printf("\t\ttype %s num_stripes %d\n",
               chunk_flags_str, num_stripes);
        for (i = 0 ; i < num_stripes ; i++) {
+               unsigned char dev_uuid[BTRFS_UUID_SIZE];
+               char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
+
+               read_extent_buffer(eb, dev_uuid,
+                       (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
+                       BTRFS_UUID_SIZE);
+               uuid_unparse(dev_uuid, str_dev_uuid);
                printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
                      (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
                      (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
+               printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
        }
 }