Bricklen Anderson <BAnderson@PresiNET.com> writes:
> Noticed this in one of my pg logs last Friday:
> LOG: could not fsync segment 0 of relation 1663/16387/22359: Input/output error
> ERROR: storage sync failed on magnetic disk: Input/output error
That's a hardware problem. Run some disk diagnostics, and/or think
about replacing your drive before it fails completely.
regards, tom lane