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

> 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
>

thanks, yes it could be a hard disk issue, at least when I'm trying to zip
the whole psql directory I get the following message:

adding: pgsql/data/base/892124/937757 zip warning: file size changed
while zi (deflated 88%)

as the postmaster has been shut down, nobody should change files in the
pgsql directory tree.

rgds
dimitri

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