HEADS UP: ZFSv28 is in!

[Fabian Keil]

Alexander Leidinger <Alexander at Leidinger.net> wrote:

> On Mon, 28 Feb 2011 19:21:29 +0100 Fabian Keil
> <freebsd-listen at fabiankeil.de> wrote:
> 
> > Pawel Jakub Dawidek <pjd at FreeBSD.org> wrote:
> > 
> > > I just committed ZFSv28 to HEAD.
> > 
> > I updated the system without removing the tuning for ZFSv15
> > first, and somehow this completely messed up the performance.
> > Booting the system took more than ten minutes and even once
> > it was up it was next to unresponsive.
> > 
> > I'm not sure which sysctl was to blame, but after removing
> > all but vfs.zfs.arc_max="800M" and rebooting, the problem
> > was gone.
> 
> When you add the tuning back, does it take minutes again to boot? If
> not, I assume it was cleaning up some leftovers the old version was not
> able to cleanup.

I haven't tried that yet, but as I didn't upgrade the system's
storage pool I don't think ZFS is supposed to do any such clean-ups.

I also don't see any similar issues when importing other v15 pools.

Fabian
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