private boolean isPoolRestarted( PoolDS ds, PoolPassiveIoFileMessage<org.dcache.chimera.nfs.v4.xdr.stateid4> message) { long verifier = message.getVerifier(); if (verifier != 0) { // pool supports verifier return ds.getVerifier() != verifier; } // pre-2.9 pool return !Arrays.equals(ds.getInetSocketAddress(), message.socketAddresses()); }