Hannes Dorbath <light(at)theendofthetunnel(dot)de> writes:
> one of our servers did accidently run out of discspace during a huge
> data load. Postmaster closed the connection with `no space left on
> device, cannot write x_log' or something similar. We have fsync=false on
> that machine. Do we have to fear data corruption?
No. The reason PG treats out-of-xlog-space as a PANIC is exactly so
that it won't do anything it can't log safely. Once you get past the
postmaster restart you're fine.
regards, tom lane