Clears the EIO cache.
The EIO cache is an additional, fast, read-only I/O cache that exists between the PDE FSG cache and the disk storage subsystem on some platforms.
EIO cache is used only for data from permanent tables.
The EIO cache is cleared on a node-wide basis. The amount of cache cleared depends on the AMPs in the current Filer scope: If scope is set to one AMP, the EIO cache is cleared on the node containing that AMP. If the scope is set to all AMPs, the EIO cache is cleared on all nodes in the system.
This cache does not exist on all platforms. If it does not exist, this command does nothing.