Bricklen Anderson <BAnderson@xxxxxxxxxxxx> 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
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
