Invalid Data Value Log2

Invalid data value log2 refers to item forms of the secondary log block with damage values outside of the usual range which logs can usually be obtained in.

Obtaining
Without the use of commands, invalid data value log2 items are unobtainable in the last versions in which they existed without inheriting them from a prior version in which they were obtainable.

Only eight damage variants of the log2 block are currently known to be obtainable. Two of these correspond to existing species (0 for acacia and 1 for dark oak), with the other six being invalid data value variants. There is currently no known way to obtain log2 items with damage values of 6, 7, 10, 11, 12, 13, 14 or 15. Like with all other invalid data value items documented on this wiki, there is also no known way to obtain items with damage values 16 and above, nor -1 and below.

Transmutation
Block transmutation with doors or arrows can be used to obtain log2 items with metadata 2 and 3. These blocks can be mined in 14w21b or earlier to obtain the item corresponding to these blocks.

Breaking log2 blocks
In 14w25a, log2 blocks existing in the world will drop invalid data value log2 items when broken. Acacia logs will drop items with a damage value of 4, and dark oak logs will drop items with a damage value of 5.

In 14w25b, breaking log2 blocks with a Silk Touch enchanted axe will drop different invalid data value log2 items: acacia logs drop damage value 8, and dark oak logs drop damage value 9.

Invalid data value log blocks that exist in the world cannot be broken in 14w25a onwards, as approaching a chunk containing them will crash the game in these two versions.

Issues
Invalid data value log2 items are an issue, and due to their removal, can be considered already fixed.