Sergio Pili <[EMAIL PROTECTED]> writes:
> pg_dump abort with this error:
> pg_dump: dumpBlobs(): error reading large object: ERROR:  cannot read block
> 6389 of pg_largeobject_loid_pn_index: Input/output error

> This error is caused by bad block on my  hard drive?

Looks like it.

> How can i do to recover database without lost blobs? Or to lose less
> information?

If the only loss is in that index, you can rebuild the index using
REINDEX.

                        regards, tom lane

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TIP 8: explain analyze is your friend

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