How to cope with hardware-poisoned page-cache pages

Posted May 6, 2022 9:21 UTC (Fri) by Wol (subscriber, #4433)
In reply to: How to cope with hardware-poisoned page-cache pages by LtWorf
Parent article: How to cope with hardware-poisoned page-cache pages

> I don't understand, at this point hasn't the data loss already happened?

Not necessarily :-) It's complicated ...

For example, I run raid-5 over dm-integrity over hardware. Any data loss in pages waiting to be flushed BELOW the dm-integity level, I don't care (that much). If I ran raid-6, that would be any failure below the raid level.

Like you I agree that Wilcox' point sounds wrong - until you think about it ...

Cheers,
Wol