Re: BUG during log recovery

[Jan Steffens <jan.steffens@gmail.com>]

On Tue, Dec 18, 2012 at 2:40 PM, Josef Bacik <jbacik@fusionio.com> wrote:
> On Fri, Dec 14, 2012 at 03:04:08PM -0700, Jan Steffens wrote:
>> After a lockup requiring a hard reset, the btrfs could not be mounted,
>> throwing the following error:
>>
>
> Could you tell me what line this comes out to?  Give me a few lines of context
> so I can figure out where it's happening.  Thanks,
>
> Josef

Sure, here:

	caching_ctl = get_caching_control(block_group);

	if (!caching_ctl) {
		BUG_ON(!block_group_cache_done(block_group));
		ret = btrfs_remove_free_space(block_group, start, num_bytes);
		BUG_ON(ret); /* -ENOMEM */     // <<< 6185
	} else {
		mutex_lock(&caching_ctl->mutex);

		if (start >= caching_ctl->progress) {
			ret = add_excluded_extent(root, start, num_bytes);