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@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-Mainli...
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-sa... http://hardware-beta.slashdot.org/story/14/03/19/2125243/opensuse-132-to-use...
RAID 5/6 code has been added to the exp. branch http://www.linuxtoday.com/high_performance/raid-56-code-merged-into-btrfs.ht...
Of course, you are free to use third party loadable kernel modules for whatever other FS you want...
Just my $0.02 FC
2014-09-15 22:51 GMT+03:00 Steve Thompson smt@vgersoft.com:
On Mon, 15 Sep 2014, Fernando Cassia wrote:
It´s called BTRFS.
It´s supported by SUSE, Fujitsu, Oracle, among others.
Yeah, but is it supported by the *US Government* ???
zfs release zero dot something does not sound like production ready ?
Eero
On 9/15/2014 13:58, Eero Volotinen wrote:
zfs release zero dot something does not sound like production ready ?
On 2014-09-15, Warren Young warren@etr-usa.com wrote:
On 9/15/2014 13:58, Eero Volotinen wrote:
zfs release zero dot something does not sound like production ready ?
That's a super (and timely!) post on XFS. I saw in particular this section.
"Upgrades require that users keep the userland tools and kernel modules in synchronization on ZoL while other Open ZFS platforms manage that for users. We plan to resolve this with /dev/zfs ioctl stabilization. This is the last major missing feature before ZoL moves to 1.0 status."
So the ZoL folks want one more feature before calling it 1.0; otherwise they believe it's production ready. Only your own testing can convince you that it's truly production ready.
--keith
Eero Volotinen wrote:
2014-09-15 22:51 GMT+03:00 Steve Thompson smt@vgersoft.com:
On Mon, 15 Sep 2014, Fernando Cassia wrote:
It´s called BTRFS.
It´s supported by SUSE, Fujitsu, Oracle, among others.
Yeah, but is it supported by the *US Government* ???
zfs release zero dot something does not sound like production ready ?
My feelings exactly.
mark
On Mon, Sep 15, 2014 at 3:27 PM, Chris chris2014@postbox.xyz wrote:
Isn't fuse / zfs (partly?) in userspace?
I believe there´s two separate efforts to run ZFS on Linux. One uses FUSE, the other reimplemented ZFS as a loadable kernel module.
FC
On Mon, Sep 15, 2014 at 03:29:31PM -0300, Fernando Cassia wrote:
On Mon, Sep 15, 2014 at 3:27 PM, Chris chris2014@postbox.xyz wrote:
Isn't fuse / zfs (partly?) in userspace?
I believe there´s two separate efforts to run ZFS on Linux. One uses FUSE, the other reimplemented ZFS as a loadable kernel module.
FC
Correct. The ZoL effort does not involve FUSE at all. Quite easy to install via yum as well (after pointing at the ZoL repos):
http://zfsonlinux.org/epel.html
With that said:
http://zfsonlinux.org/faq.html#PerformanceConsideration
Have been running it at $DAYJOB and it's been quite stable. Can't really speak to performance, but haven't had complaints after moving workflows (which are admittedly not super heavy workloads) from HW RAID+LVM to it. YMMV.
Ray
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Keith Keller -
m.roth＠5-cent.us -
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Warren Young