Re: xlog related error

"Rajesh Kumar Mallah" <mallah.rajesh@gmail.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