could not write block & xlog flush request 3FD/0 is not satisfied

From: Yves Weißig <weissig(at)rbg(dot)informatik(dot)tu-darmstadt(dot)de>
To: pgsql-hackers(at)postgresql(dot)org
Subject: could not write block & xlog flush request 3FD/0 is not satisfied
Date: 2011-05-08 15:18:09
Message-ID: 4DC6B431.3040603@rbg.informatik.tu-darmstadt.de
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Hi again pgsql-hackers,

my experimental index which I am developing still has some problems.
Perhaps the list has some advices or hints where this error might occur:

WARNING: could not write block 6 of base/459204/483963
DETAIL: Multiple failures --- write error might be permanent.

directly followed by an:

ERROR: xlog flush request 3FD/0 is not satisfied --- flushed only to
0/20E2DC4
CONTEXT: writing block 6 of relation base/459204/483963

So far my index worked for small relations, up to 1.000 tuples, now with
a relation of 1.000.000 tuples I am running into these problems. I think
I might be lacking some knowledge to really solve the problem. I am
happy about any suggestions or advices you can make.

Best wishes, Yves

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