Re: DragonflyBSD on Areca w/ HAMMER

[Michael Neumann <mneumann@xxxxxxxx>]

On 05/31/2011 04:58 PM, Justin Sherrill wrote:
> There's no way to expand/shrink Hammer volumes.  Another way to
> approach this - and it's not necessarily better or worse - is to use
> Hammer's mirroring capability to move data to a larger disk and then
> start using that one, or otherwise shift it around.

Well, there is a possibility to add and remove volumes other than the 
root volume, but IMHO
it's still considered experimental. In combination with LVM you could 
emulate expanding and
shrinking of a Hammer filesystem.

Regards,

  Michael

> On Tue, May 31, 2011 at 1:07 AM, Dean Hamstead<dean@fragfest.com.au>  wrote:
> > Hi Guys
> >
> > Im thinking about reloading my home file server with dragonflybsd. Mainly so
> > i can take advantage of the rather awesome looking HAMMER filesystem.
> >
> > My home server has an Areca 1260 SAS raid card, which is reported as being
> > supported by the arcmsr man page.
> >
> > Im looking for confirmation from other users that areca cards work well, and
> > that the admin tools are supported from freebsd or otherwise implemented
> > independently.
> >
> > Also id like to get some feedback that HAMMER is up to the task of being
> > belted really hard over sustained periods.
> >
> > Im also not able to see find a conclusive answer to if HAMMER can be
> > expanded (as im relatively frequently adding more disks, and expanding my
> > raid array - currently im using UFS tool growfs)
> >
> > I have dabbled with ZFS on freebsd, but found it wanting. HAMMER seems much
> > more 'next generation' - rather than just collapsing some raid features in
> > to the filesystem.
> >
> > Dean
> > --
> > http://fragfest.com.au