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There's also this paper, which is quite good - https://mirrors.edge.kernel.org/pub/linux/kernel/people/hpa/raid6.pdf https://mirrors.edge.kernel.org/pub/linux/
by eps 6y ago
There's also this paper, which is quite good -
https://mirrors.edge.kernel.org/pub/linux/kernel/people/hpa/raid6.pdf https://mirrors.edge.kernel.org/pub/linux/kernel/people/hpa/...
Also there are simpler, xor-based encoding schemes that allow recovering from double failures (e.g. EvenOdd and such), but the problem is that they are all patented.
- est31 6y agoThis E-Mail about increased numbers of parities is also interesting: https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg28964.html https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg...
- huhtenberg 6y agoThat's the SnapRAID dev! Also, check out this bit - >> Could you perhaps describe how the Cauchy matrix is >> derived, and under what conditions it would become >> singular? > The Cauchy matrix has the mathematical property ... > ... > Besides the mathematical proof, I've also inverted all > the 377,342,351,231 possible submatrices for up to 6 > parities and 251 data disks, and got an experimental > confirmation of this. "Trust, but verify" :) [0] https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg28966.html https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg...
- deleted 6y ago[deleted]