2010/1/8 Alban Hertroys <dal...@solfertje.student.utwente.nl>:

> You seem to have lost the actual data, not the index entries pointing to it, 
> or a sequential scan (eg. pg_dump) would still have found your rows.

I agree.

> What kind of file-system is the affected table on? - and while we're at it, 
> what OS/Distribution and version? Is your data on some kind of RAID array? If 
> so, what type (hardware/software, RAID type)?

It's ext3 on a hardware RAID1. The array is in perfect condition,
according to its diag tool. The OS is Ubuntu 8.04. The exact PG
version is 8.3.8.

> I get the impression the data you lost and the data around it hasn't been 
> written to in a long time; it wouldn't surprise me if your problem would have 
> been caused by a bad sector on a disk, but that depends on how reliable your 
> storage is set up to be.

You are correct about the first point. It's a write-only table with
thousands of inserts daily, and the lost rows were written 7 months
ago.

-- 
Konrad Garus

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