Linked by Thom Holwerda on Wed 15th Jun 2011 14:21 UTC, submitted by aargh
Linux "Remember KQ Infotech? KQ Infotech was the Indian company that ported the ZFS file-system to Linux as an out-of-tree kernel module (after deriving the code from the LLNL ZFS Linux work) and KQ's interesting methods of engagement in our forums. The company was successful in delivering an open-source ZFS module for Linux that performed semi-well and didn't depend upon FUSE (the file-systems for user-space module) like other implementations. However, this ZFS Linux code appears to no longer be worked on by KQ Infotech."
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BTRFS soon to be standard
by Milo_Hoffman on Wed 15th Jun 2011 15:22 UTC
Member since:

With btrfs now becoming the standard filesystem for FEDORA (see:, this is a signal that probably with Redhat Enterprise 7 at the latest, and there are signs that maybe even during the current RHEL6 life cycle, BTRFS will become the standard enterprise filesystem.

btrfs, has been a feature preview in RHEL(since 5.3 if I remember) and its now fully baked into RHEL6 for full blown testing as a primary filesystem and a fair number of people have been using it and giving feedback and helping it to mature at a pretty good pace.

Once btrfs is stable and in mainstream use, there will be zero need for ZFS in the linux world, it will pretty much have feature parity.

Edited 2011-06-15 15:35 UTC

Reply Score: 4

RE: BTRFS soon to be standard
by orestes on Wed 15th Jun 2011 18:38 in reply to "BTRFS soon to be standard"
orestes Member since:

You're *almost* correct. Having the ability to read ZFS volumes is still a useful thing to have in if you happen to be running a mixed shop or are migrating from Solaris to Linux based systems. Niche yes, yet still very useful if you fall into the niche.

I'm also skeptical about RHEL migrating to BTRFS as a recommended filesystem quite so quickly. At the moment the performance just is not there for the sort of tasks that the enterprise needs. It may very well be a fully supported option, but I seriously doubt it'll take center stage before well into RHEL 7

Edited 2011-06-15 18:38 UTC

Reply Parent Score: 4

RE[2]: BTRFS soon to be standard
by Lennie on Thu 16th Jun 2011 09:25 in reply to "RE: BTRFS soon to be standard"
Lennie Member since:

I think if you need to copy some data, maybe the FUSE version would be enough.

Reply Parent Score: 2

RE: BTRFS soon to be standard
by phoenix on Wed 15th Jun 2011 22:16 in reply to "BTRFS soon to be standard"
phoenix Member since:

It's going to a long while, probably beyond RHEL 7, before btrfs reaches feature parity with the current version (ZFSv28) of open-source ZFS. Missing pieces are:
* working fsck and other recovery tools
* single, dual, triple parity (RAID5/6/+) support
* deduplication support
* encryption support
* probably more

Other than the first item, none of the above are even being worked on.

btrfs is a nifty filesystem, but it's no ZFS, and won't be for many years yet.

Reply Parent Score: 12

RE[2]: BTRFS soon to be standard
by Lennie on Thu 16th Jun 2011 09:26 in reply to "RE: BTRFS soon to be standard"
Lennie Member since:

Why would you need fsck, ZFS didn't need it ;-)

There is definitely an interrest in deduplication, I think there is also working code. So I wouldn't be surprised if atleast offline support will be available.

Edited 2011-06-16 09:32 UTC

Reply Parent Score: 3

werterr Member since:

Personally I found the tooling of btrfs terrible to use compared to zfs. So only in that sense it's still miles behind zfs.

Also zfs's send and receive are also missing.

Don't get me wrong I love the btrfs effort and I'll probably switch to btrfs instead of zfs. (as you still need to run solaris for any serious use, or deal with the ancient fbsd version)

But I hope that by that time the tools will be a lot more friendly to use then there now.

Besides all the technical features, this is one of the major benefits of zfs imho.

Reply Parent Score: 1

RE: BTRFS soon to be standard
by shmerl on Thu 16th Jun 2011 05:48 in reply to "BTRFS soon to be standard"
shmerl Member since:

ZFS is still superior to BTRFS, so having a native ZFS support is very useful.

Reply Parent Score: 5

RE: BTRFS soon to be standard
by Kebabbert on Thu 16th Jun 2011 10:55 in reply to "BTRFS soon to be standard"
Kebabbert Member since:

This may be a bad move for Linux. A filesystem is much more important than a kernel to be really stable. If a kernel is unstable and crashes, you might loose a couple of hours of work. If a filesystem crashes, you might loose several years of work.

A filesystem have much higher standards than a kernel. It takes years and years to accept a filesystem as production ready. Many Enterprise companies will wait a decade. Even ZFS, mature as it is, has it's bugs today. BTRFS will have even more, and much functionality is not even developed yet. I dont even know how many developers are working on BTRFS. Oracle bets big money on ZFS (which they earn money on) and has not reallocated many devs to BTRFS - as I have heard of. Oracle thinks ZFS is superior, and it earns money. Today.

Not good when Linux use unstable and beta code and call it production ready. Even Linux kernel developers confirm this lead to low code quality. Linux developer Andrew Morton says the "linux code quality is declining". This might be a bad move for Linux, when reports of people loosing data drops in. Read the BTRFS mail lists and forums, lots of problems and bugs there is.

Reply Parent Score: 5