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OpenZFS 2.0 will come with two awesome features that I am really looking forward to.

The first one is ZSTD compression, this will work great together with MySQL and PostgreSQL.

The second major feature is persistent L2ARC, I'm using LARGE ssd's as cache. And the warmup time takes weeks. So rebooting has a major performance impact.

For the last 10 years, I have been using FreeBSD with ZFS. This has been working perfectly with good performance. But now I want to take advantage of even faster network speeds, with RoCE/RDMA. And FreeBSD support for iSER, NVMe-OF is non-existant, while Linux has excellent support for these technologies.



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Can you explain the advantages of OpenZFS over other filesystems? I know FreeBSD uses ZFS, but I never really understood how it stacks up relative to other technologies...

It looks like OpenZFS still has xattr support which is the one Illumos ZFS feature I always wanted on my FreeBSD systems. Hype! :D

It uses OpenZFS.

I'm also a very happy ZFS user on FreeBSD. I've tried to use it in a lot of crazy ways. At the moment I'm researching if ZFS and a virtual machine running Microsoft SQL Server can improve query performance(with LZ4/GZIP compression) and improve the backup speed.

Though I'm wondering about if there are any plans to add XZ compression? Or faster hashing with Siphash24 for data checksums?


ZFS doesn't support either yet: http://open-zfs.org/wiki/Performance_tuning

Though it looks like zstd is coming, which is exciting: https://reviews.freebsd.org/D11124


ZFS is so awesome that for my file server I pick the OS based on ZFS support, not the other way around.

Currently still running OpenSolaris on my ZFS server, probably will be FreeBSD next time I upgrade the hardware, but time will tell. Regardless of the OS, it will be ZFS!


I have no idea what the state of ZFS on Linux is, but I've been using it on FreeBSD for a while now and it's fantastic. Comparing FreeBSD to Linux is a bit of an apples/oranges thing though.

Thanks for the link. This will be cool, I use FreeBSD as daily driver so ZFS is already a given.

zfs doesn't support either of those yet unfortunately. I'd love for zstd to be available given it's benefits in speed and compression ratio.

I doubt any Oracle SSD performance enhancements will make it into OpenZFS though.

cannot wait for zfs

I am certainly looking forward to trying it out!

ZFS is a great filesystem and being able to possibly have a better implementation than we do at the moment, or at least, be able to spur additional development and optimization, is very welcome!


FreeNAS 12 (now named TrueNAS) is already using OpenZFS 2.0, or very nearly.

My workplace has been using ZFS for years. I've yet to see an alternative come close to being compelling. We use OpenZFS on all our RHEL servers and even workstations with XFS for root partitions and smaller clients. Our primary file server is Solaris 11 but is coming to the end of its long life. The plan is to use FreeBSD on the replacement. ZFS has become so valuable to us that it alone can be a major factor in directing our other choices.

Is nice to see it advancing in useful ways. Hopefully this leads to offline dedup without the runtime memory costs.


It's funny that you say that because FreeBSD's ZFS support is the reason I use FreeBSD, and it's the number 1 thing I wish OpenBSD had.

ZFS was one of the reasons I switched to FreeBSD, and it turned out to have a lot of other advantages too. Might be worth a look?

Another nice feature is first class support for ZFS.

ZFS support would be a huge improvement over NTFS.

> features like ZFS

Linux has ZFS.

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