Re: kernel BUG at fs/btrfs/delayed-inode.c:1466!

[Jacek Luczak]

2012/3/8 David Sterba <dave@xxxxxxxx>:
> On Thu, Mar 08, 2012 at 01:10:45PM +0100, Jacek Luczak wrote:
>> kernel BUG at fs/btrfs/delayed-inode.c:1466!
>
> 1461         ret = btrfs_delayed_item_reserve_metadata(trans, root, item);
> 1462         /*
> 1463          * we have reserved enough space when we start a new transaction,
> 1464          * so reserving metadata failure is impossible.
> 1465          */
> 1466         BUG_ON(ret);
>
>> RAX: 00000000ffffffe4
>
> ENOSPC
>
>>  [<ffffffffa03210e5>] ? __btrfs_unlink_inode+0x172/0x25e [btrfs]
>>  [<ffffffffa032158c>] ? btrfs_rename+0x38b/0x55b [btrfs]
>
> rename reserves 20 blocks, but seems that's not enough.  I've never seen
> a crash report in rename, and according to the stacktrace there's
> nothing suspicious (like selinux related).

There were quite many things happening in the system at that time.
Can't really tell what could trigger this.

Complete logs: http://91.234.146.107/~difrost/logs/tampere_log.gz

-Jacek
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