Re: pg_dump: ERROR: cannot read block 1055 of summary: Input/output error

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Dimitri Nagiev <dnagiev(at)gmx(dot)de>
Cc: pgsql-admin(at)postgresql(dot)org, dmagiev(at)gmx(dot)de
Subject: Re: pg_dump: ERROR: cannot read block 1055 of summary: Input/output error
Date: 2003-06-28 03:12:46
Message-ID: 15183.1056769966@sss.pgh.pa.us
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Dimitri Nagiev <dnagiev(at)gmx(dot)de> writes:
> using pg_dump I get the following error message:
> pg_dump: ERROR: cannot read block 1055 of summary: Input/output error
> calls from psql give me similar trouble:
> ERROR: cannot read block 1055 of summary: Interrupted system call

> There's a good backup from yesterday, but still I am very concerned.

As you should be. It sounds like your disk has developed a bad sector.
I'd recommend replacing the disk --- where one sector has gone bad,
others may soon follow.

regards, tom lane

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