"Rajesh Kumar Mallah" <mallah(dot)rajesh(at)gmail(dot)com> writes:
> A friend of mine getting following error
> Error: xlog flush request 0/797FED50/ is not satisfied -- flushed only
> to 0/797FC1D8
> CONTEXT: writing block 681 of relation 1663/10819/16520
Which PG version exactly? Has he had any crashes lately? The message
means that that block contains an LSN that's past the current end of WAL,
which is a pretty suspicious situation.
The message will go away pretty soon (as soon as another 10K or so of
WAL is generated) but this looks like a symptom of a bug to me. Details
would be good.
regards, tom lane