On Mar 1, 2014, at 4:26 PM, Chris Murphy <lists(a)colorremedies.com> wrote:
On Mar 1, 2014, at 2:16 PM, Matthew Miller <mattdm(a)fedoraproject.org> wrote:
> On Fri, Feb 28, 2014 at 11:29:30PM -0700, Chris Murphy wrote:
>> - There needs to be a mandate to remove features from custom partitioning
>> that quite frankly don't make sense like rootfs on raid4, raid5 or
>> raid6. OK maybe raid5. But not raid 4 or raid 6. There are other
>
> Okay, I'll bite. Why not rootfs on raid6?
It's pathological. There are too many simpler, faster, more resilient options
considering rootfs at most isn't bigger than the average SSD: Two or three SSDs +
n-way mirroring. RAID 10. Or RAID 1 + linear + XFS for deterministic workloads.
Those three examples are simpler, more resilient, easier to configure and maintain,
perform better, with faster rebuild times than RAID 6 which also has a high
read-modify-write penalty. I left that part out.
Chris Murphy