/**
* Make a copy of the block if this block is linked to an existing snapshot. This ensures that
* modifying this block does not modify data in any existing snapshots.
*
* @param block Block
* @param numLinks Detach if the number of links exceed this value
* @throws IOException
* @return - true if the specified block was detached
*/
public boolean detachBlock(Block block, int numLinks) throws IOException {
DatanodeBlockInfo info = null;
synchronized (this) {
info = volumeMap.get(block);
}
return info.detachBlock(block, numLinks);
}
