Add dprintfs to report chunk lookups

diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
index 16aa0742aa17058b9fabb4d39c0720d9830d33d8..fb7469b67b27ef0c2718c80828a8c8618b037209 100644 (file)
--- a/grub-core/fs/btrfs.c
+++ b/grub-core/fs/btrfs.c
@@ -589,6 +589,8 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
       struct grub_btrfs_key key_out;
       int challoc = 0;
       grub_device_t dev;
+      grub_dprintf ("btrfs", "searching for laddr %" PRIxGRUB_UINT64_T "\n",
+                   addr);
       for (ptr = data->sblock.bootstrap_mapping;
           ptr < data->sblock.bootstrap_mapping
             + sizeof (data->sblock.bootstrap_mapping)
@@ -647,6 +649,16 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
        unsigned redundancy = 1;
        unsigned i, j;
 
+       grub_dprintf ("btrfs", "chunk 0x%" PRIxGRUB_UINT64_T
+                     "+0x%" PRIxGRUB_UINT64_T
+                     " (%d stripes (%d substripes) of %"
+                     PRIxGRUB_UINT64_T ")\n",
+                     grub_le_to_cpu64 (key->offset),
+                     grub_le_to_cpu64 (chunk->size),
+                     grub_le_to_cpu16 (chunk->nstripes),
+                     grub_le_to_cpu16 (chunk->nsubstripes),
+                     grub_le_to_cpu64 (chunk->stripe_length));
+
        switch (grub_le_to_cpu64 (chunk->type)
                & ~GRUB_BTRFS_CHUNK_TYPE_BITS_DONTCARE)
          {