Re: cannot read block errors !

On Wednesday 09 September 2009 12:22:29 Tom Lane wrote:
> Kevin Kempter <kevink(at)consistentstate(dot)com> writes:
> > we're getting these errors on our system today:
> >
> > Sep 9 00:53:45 ux-rqs04-atl2 ri_load[5846]: Caught Exception!
> > Shutting down: ERROR: could not read block 703769 of relation
> > 37698/17627/38565: Input/output error CONTEXT: SQL statement "SELECT
> > 1 FROM ONLY "our_schema"."big_table" x WHERE "id" OPERATOR(pg_catalog.=)
> > $1 FOR SHARE OF x"
> >
> > Sep 9 15:34:36 ux-rqs04-atl2 ri_load[23717]: Caught Exception! Shutting
> > down: PANIC: right sibling's left-link doesn't match: block 1377627
> > links to 3120580 instead of expected 1736900 in index "no_dups" CONTEXT:
> > COPY big_table, line 1563: "157945230
> > x/1739441607/false/p_1378267744=0" \copy: unexpected response (7)
> >
> > Anyone have any ideas what's gone wrong and how to fix it?
>
> "Input/output error" generally means you've got hardware problems.
> Have you looked into the kernel logs to see if there are device driver
> complaints?
>
> The other one indicates index corruption, which I might think suggested
> a Postgres bug if I hadn't seen the first one. You can fix that index
> with REINDEX, but you'd better deal with the underlying issue first
> before it corrupts data that's not so easily fixed.
>
> regards, tom lane

Thanks, in fact it was a HW issue. we did a REINDEX and stopped the db so we
could fix the HW issues.