Hello Chris, > > My question is now, how often can a block in btrfs be refferenced?
> The exact answer depends on if we are referencing it from a single > file or from multiple files. But either way it is roughly 2^32. could you please explain to me what underlying datastructure is used to monitor if the block is still referenced or already free? Is a counter used, bitmap (but that can't be if is 2^32) or some sort of list? I assume that a counter is used. If this is the case, I assume when a snapshot for example is deleted the reference counter of every block that was referenced in the snapshot will be decremented by one. Is this correct or am I missing something here? Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html