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I'm seriously tempted to give it a try. BTRFS progress is sooooooo slow. How long does it take to get a filesystem repair tool out!
Install ZFS on Debian GNU/Linux (or Ubuntu as the case may be)

Author's closing remarks:

"It is stable enough to run a ZFS root filesystem on a GNU/Linux installation for your workstation as something to play around with. It is copy-on-write, supports compression, deduplication, file atomicity, off-disk caching, encryption, and much more. At this point, unfortunately, I’m convinced that ZFS as a Linux kernel module will become “stable” long before Btrfs will be stable in the mainline kernel. Either way, it doesn’t matter to me. Both are Free Software, and both provide the long needed features we’ve needed with today’s storage needs. Competition is healthy, and I love having choice. Right now, that choice might just be ZFS."
Quick post on installing ZFS as a kernel module, not FUSE, on Debian GNU/Linux. The documents already exist for getting this going, I'm just hoping to spread this to a larger audience, in case you...
Charlie Kravetz (charlie-tca)'s profile photoJohn Lewis's profile photoPeter Jespersen's profile photo
And I am still using ext4 here. I have to install Ubuntu and Fedora both this next week, guess I might as well stay with the same file system. It's easier to transfer files back and forth.
Well I only use BTRFS on a couple of portable USB drives I have configured in a RAID 1 mdadm array. I've been using it for a year or so and haven't had any problems, despite sudden power offs. Everywhere else is ext4. I did try BTRFS on my production laptop but ext4 performs better especially on things like apt/dpkg transactions that fsync a lot.
Tried it a bit for my root partitions on my desktop for root (well that means that a small boot ext4 partition is created, apparently you cannot boot BtrFS) - I really can't say anything positive about it here - I quickly retrited back to ext4.

On my laptop it actually works fine (but then I seldom use that one these days) - the srv partition on my home server has for a while formated to BtrFS - but this thread made me think twice - now it's ext4 - and what a surprise it just became a tad more responsive.
At the moment BTRFS is probably best where speed isn't paramount, and compression is desirable, for instance on my USB RAID 1 setup that backs up all the machines. I expect ZFS to be similar, but the feature set and hopeful lack of fsync problems will convince me to try it on my laptop SSD, as it is only 60 GB which is constrictive.
It's been a year or two - but I remember ZFS as quite fast (at one time I used OSOL on and off - it almost threw me of the Linux track) and the snapshot feature as a dream - totally unlike BtrFS+Snapper, which at current moment is a dog.

The low performance aside I also have observed quite a large overhead.
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