On Fri, May 24, 2019 at 05:43:56PM +0800, Yao Liu wrote: > When sock dead, nbd_read_stat should return a ERR_PTR and then we should > mark sock as dead and wait for a reconnection if the dead sock is the last > one, because nbd_xmit_timeout won't resubmit while num_connections <= 1. num_connections is the total number of connections that the device was set up with, not how many are left. Now since we have the dead_conn_timeout timeout stuff now which didn't exist when I originally wrote this code I'd be ok with doing that, but not the way you have it now. It would be something more like if (nbd_disconnected(config) || (config->num_connections <= 1 && !config->dead_conn_timeout) instead. Thanks, Josef