Re: xlog flush request error

From: Vipul(dot)Gupta(at)trilogy(dot)com
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: xlog flush request error
Date: 2005-11-25 04:48:17
Message-ID: OF216BE6EA.7FF65954-ON862570C4.001A3FC6@trilogy.com
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Hi tom,

basically when i run any query with database say,

select count(*) from table1;

It gives me the following error trace:
WARNING: could not write block 297776 of 1663/2110743/2110807
DETAIL: Multiple failures --- write error may be permanent.
ERROR: xlog flush request 7/7D02338C is not satisfied --- flushed only to
3/2471E324
writing block 297776 of relation 1663/2110743/2110807
xlog flush request 7/7D02338C is not satisfied --- flushed only to
3/2471E324
xlog flush request 7/7D02338C is not satisfied --- flushed only to
3/2471E324\q

i tried using pg_resetxlog but till date, have not been able to solve this
problem

Regards,
Vipul Gupta

Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
11/24/2005 09:07 PM


To: Vipul(dot)Gupta(at)trilogy(dot)com
cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] xlog flush request error

Vipul(dot)Gupta(at)trilogy(dot)com writes:
> Can anyone suggest how do i fix this

> xlog flush request 7/7D02338C is not satisfied --- flushed only to
> 3/2471E324

This looks like corrupt data to me --- specifically, garbage in the LSN
field of a page header. Is that all you get? PG 7.4 and up should tell
you the problem page number in a CONTEXT: line.

regards, tom lane

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