u64 dev_min = 1;
u64 dev_nr = 0;
u64 target;
+ int debug;
int index;
int full = 0;
int ret = 0;
+ debug = btrfs_test_opt(root, ENOSPC_DEBUG);
+
block_group = btrfs_lookup_block_group(root->fs_info, bytenr);
/* odd, couldn't find the block group, leave it alone */
- if (!block_group)
+ if (!block_group) {
+ if (debug)
+ btrfs_warn(root->fs_info,
+ "can't find block group for bytenr %llu",
+ bytenr);
return -1;
+ }
min_free = btrfs_block_group_used(&block_group->item);
* this is just a balance, so if we were marked as full
* we know there is no space for a new chunk
*/
- if (full)
+ if (full) {
+ if (debug)
+ btrfs_warn(root->fs_info,
+ "no space to alloc new chunk for block group %llu",
+ block_group->key.objectid);
goto out;
+ }
index = get_block_group_index(block_group);
}
ret = -1;
}
}
+ if (debug && ret == -1)
+ btrfs_warn(root->fs_info,
+ "no space to allocate a new chunk for block group %llu",
+ block_group->key.objectid);
mutex_unlock(&root->fs_info->chunk_mutex);
btrfs_end_transaction(trans, root);
out: