LWN: Comments on "btrfs and NILFS"

NILFS looks quite good

nilfsguy — Wed, 30 Jun 2010 20:01:52 +0000

I just used NILFS (it's actually NILFS2) as filesystem for my USB-stick and it looks quite good - it's fast and didn't have problems (yet) with file corruption (opposed to BtrFS). I am using the kernel 2.6.34.
Here the measurements I did and some tips to use it as rootFS:
http://www.blah-blah.ch/Mra/Nilfs2performance

btrfs sounds mightly cool.

dlang — Sun, 24 Jun 2007 22:16:24 +0000

how much of this is a limitation of the technology (like the inability to shrink XFS) and how much is just a need for better userspace tools (like easily being able to resize extX)

don't mix one with the other.

btrfs and NILFS

k8to — Sun, 24 Jun 2007 21:22:15 +0000

Of course, a codebase is not just a set of features. Maybe some NIH is going on here, but maybe not.

btrfs sounds mightly cool.

Tomasu — Sat, 23 Jun 2007 06:26:31 +0000

The part I like about ZFS is the way you can dynamically allocate
physical volume space to any logical volume (aka: filesystem) at any
time.

Nothing else does that as far as I know. All you get is LVM2, EVMS,
or "mdraid" none of which can dynamically resize the volume and
underlying filesystem on the fly, and EASILY. resizing an ext partition
is imo, too hard, and you _can't_ shrink an XFS filesyste. Function isn't
supported.

btrfs sounds mightly cool.

aglet — Fri, 22 Jun 2007 13:13:57 +0000

I wondered about the ZFS "license fuss" -- there's a good precis here: http://kerneltrap.org/node/8066

btrfs and NILFS

Tet — Thu, 21 Jun 2007 13:47:27 +0000

I admit I haven't looked into it in any depth, but from skimming the btrfs feature list, it looks like they're mostly just reinventing vxfs, partial support for which is already in the mainline kernel.

btrfs and NILFS

i3839 — Thu, 21 Jun 2007 13:23:09 +0000

There's also Chunkfs, though that seems more like a research project than a real filesystem at the moment.

btrfs sounds mightly cool.

dion — Thu, 21 Jun 2007 12:16:45 +0000

Wow, it certainly sounds like btrfs got most of the features I've been wanting from ZFS (checksumming & snapshots), but with less of the license fuss.

All that's needed to gain coolness parity with ZFS is something like raid-z, unfortunately I don't see how that can be done without implementing it in the fs itself.