Messages in this thread | | | Subject | Re: ext4 features | From | Arjan van de Ven <> | Date | Mon, 03 Jul 2006 23:01:43 +0200 |
| |
> ZFS was already called ,,blatant layering violation''. ;) > Yes,that what RAID is for. And if we want checksums in filesystem, > that's the best way to utilise them.
Hi,
checksums have a very different purpose than raid.
checksums are great at detecting corruption. And yes, corruption can happen even if you have raid, for many many reasons. Detecting means knowing when to not trust something, when to go for the backup tapes...
raid is great for protecting against individual disks or sectors going bad. But raid, especially high performance implementations, do not checksum data or detect corruptions.
They're different purpose with almost zero overlap in purpose or even goal...
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |