Re:Btrfs on Zoned Block Devices
by vetinari on Thursday April 22, 2021 @08:14AM
(#26901843)
> There's still a risk of data loss in certain cases
If you need this functionality and want to mitigate the write hole, gen an UPS.
> Seems like a feature companies would be very interested in so I wonder why nobody's ever fixed it.
Because those driving the development have no interest in RAID5/6, they do not need it. RAID5/6 is enthusiast/SOHO feature, and these groups do not take part in development, so no wonder it is neglected.
In fact, I will combine both points: it is more effective/economical for everyone, who needs RAID5/6 with btrfs to get an UPS than to pay the manhours for the development. Additionally, it would be an expense incurred by those who need it, not by those who do the development currently and do not need the feature.
If you need this functionality and want to mitigate the write hole, gen an UPS.
> Seems like a feature companies would be very interested in so I wonder why nobody's ever fixed it.
Because those driving the development have no interest in RAID5/6, they do not need it. RAID5/6 is enthusiast/SOHO feature, and these groups do not take part in development, so no wonder it is neglected.
In fact, I will combine both points: it is more effective/economical for everyone, who needs RAID5/6 with btrfs to get an UPS than to pay the manhours for the development. Additionally, it would be an expense incurred by those who need it, not by those who do the development currently and do not need the feature.