As a home user of ZFS I would give it an ETA of never. We've been waiting for probably 10 years for this feature, but it's just never been enough of a priority from more serious (paying) users to get worked on.
There was just a talk on it this year, it’s coming but between the time it takes to go stable in OpenZFS and the time it takes to hit downstream (FreeBSD, ZoL) it might not be for a while yet.
Interesting that it took so long to reach this conclusion. I thought Linux devs stayed away from ZFS mainly due to the licensing which leads me to believe it's not quite as 'obvious' as this post mentions.
Five years on and ZFS still remains just out of reach. I'm not a likely user on OS X (anyone got a good use case for laptop use?) but other filesystem + volume management solutions on Linux never seem to match up.
Probably never. ZFS isn't just a filesystem, it was developed to be an entire storage system that's vertically integrated, so ARC is a fundamental part of the filesystem design.
ZFS also has a huge legacy. Right now the license (probably) prevents you from legally shipping a compiled zfs module with the linux kernel, just solving that seems insurmountable. It's also supported on Illumos and FreeBSD, trying to refactor it to use the linux page cache would have a chance of introducing bugs to these platforms.
Not going to happen. It almost happened around 2007, when Sun's Jonathan Schwartz announced it on his blog. Then Apple conceded the development, sticked with HFS+ for another decade, only to eventually roll out APFS.
ZFS has now been ported to Windows. With some testing and polishing, maybe it will be something they could adopt in the future (I know, wishful thinking, but the technology is there).
I love ZFS and I want to migrate all my data storage to it. The one thing that is holding me back is the inability to grow raid z with the demand. There is a pull request ongoing for a while now, but it is hard to tell when and if this feature will be available [1]. Anyone has any more insights if there is an ETA for this feature?
ZFS support on macOS has been barely beta-quality for at least five years. I wish it were actually cross-platform, but it really only works well on Linux and FreeBSD.
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