CentOS - Sep 2014 - ZFS

> Maybe you can tune ZFS further, but I tried it in userspace (with FUSE) and
reading was a almost 5 times slower than MDADM.
That alone is meaningless.  MDADM with which filesystem? 

Zfsonlinux does not work in user space,  it is a kernel module. Just try it.

On Mon, Sep 15, 2014 at 3:18 AM, Miguel Medalha <miguelmedalha at sapo.pt>
wrote:
> Zfsonlinux does not work in user space,  it is a kernel module. Just try
> it.

There?s a copy-on-write file system in the GPL Linux kernel, merged into
the mainline Linux kernel in January 2009.
http://www.phoronix.com/forums/showthread.php?14799-Btrfs-Merged-Into-Mainline-Linux-Kernel

It?s called BTRFS.
https://www.youtube.com/watch?v=hxWuaozpe2I

It?s supported by SUSE, Fujitsu, Oracle, among others.
http://www.linux.com/news/enterprise/systems-management/677226-suse-linux-says-btrfs-is-ready-to-rock
http://hardware-beta.slashdot.org/story/14/03/19/2125243/opensuse-132-to-use-btrfs-by-default

RAID 5/6 code has been added to the exp. branch
http://www.linuxtoday.com/high_performance/raid-56-code-merged-into-btrfs.html

Of course, you are free to use third party loadable kernel modules for
whatever other FS you want...

Just my $0.02
FC

-- 
During times of Universal Deceit, telling the truth becomes a revolutionary
act
- George Orwell

On 09/15/2014 08:18 AM, Miguel Medalha wrote:
> That alone is meaningless.  MDADM with which filesystem? 
ext4
> Zfsonlinux does not work in user space,  it is a kernel module. Just try
it.
Isn't fuse / zfs (partly?) in userspace?

-- 
Gru?,
Christian