On Wed, Jul 11, 2012 at 07:19:29AM -0600, Jan Schmidt wrote:

Hi Josef,

I hit a warning with this patch on top of the current cmason/for-linus
branch. Takes about 15 minutes to produce when running xfstest 278 in
a loop and, in another shell, doing fsstress on the same volume to
force metadata modifications.

fs/btrfs/extent-tree.c
...
5032         } else if (ret == -ENOENT) {
5033                 btrfs_print_leaf(extent_root, path->nodes[0]);
5034                 WARN_ON(1);
5035                 printk(KERN_ERR "btrfs unable to find ref byte nr %llu "
5036                        "parent %llu root %llu  owner %llu offset %llu\n",
5037                        (unsigned long long)bytenr,
5038                        (unsigned long long)parent,
5039                        (unsigned long long)root_objectid,
5040                        (unsigned long long)owner_objectid,
5041                        (unsigned long long)owner_offset);
5042         } else {

Which test, 278 is an xfs specific test.  Thanks,

Josef