Toru SHIMOGAKI wrote:
> Tom Lane wrote:

> - When we take a PITR base backup with hardware level snapshot operation
> (not filesystem level) which a lot of storage vender provide, the backup data
> can be corrupted as Dan said. During recovery we can't even read it,
> especially if meta-data was corrupted.
>
> - If we don't use hardware level snapshot operation, it takes long time to take
> a large backup data, and a lot of full-page-written WAL files are made.

Does it? I have done it with fairly large databases without issue.

Joshua D. Drake


>
> So, I think users need a new feature not to write out heap pages during taking a
> backup.
>
> Any comments?
>
> Best regards,
>


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