Re: zero_damaged_pages doesn't work
| От | David Boreham |
|---|---|
| Тема | Re: zero_damaged_pages doesn't work |
| Дата | |
| Msg-id | 4CA121B0.9000802@boreham.org обсуждение исходный текст |
| Ответ на | Re: zero_damaged_pages doesn't work (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-general |
On 9/27/2010 4:53 PM, Tom Lane wrote: > The reason it tells you that data will be destroyed is that that could > very well happen. If the system decides to put new data into what will > appear to it to be an empty page, then the damaged data on disk will be > overwritten, and then there's no hope of recovering anything. > > Like Jeff said, this is not a recovery tool. It's certainly not meant > to be something that you keep turned on for any length of time, and so > the possibility of repeat messages is really not a design consideration > at all. No argument with any of this, although I'm not the intended audience for these warnings -- I know what I'm doing ;) I'm not sure though if you're disagreeing with my suggestion that the documentation be improved/corrected though. Is that the case ? (if so then I will argue)
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