Jeff Frost <jeff@xxxxxxxxxxxxxxxxxxxxxx> writes: > I tried both pulling the plug on the CIFS server and unsharing the CIFS share, > but pgbench continued completely unconcerned. I guess the failure mode of the > NAS device in the customer colo must be something different that I don't yet > know how to simulate. I suspect I'll have to wait till it happens again and > try to gather some more data before restarting the NAS device. Thanks for all > your suggestions guys! I'm still thinking that the simplest explanation is that $PGDATA/pg_clog/ is on the NAS device. Please double-check the file locations. regards, tom lane