Neil Bothwick <n...@digimed.co.uk> wrote:
> On Wed, 24 Apr 2013 10:50:11 +0200, Alan McKinnon wrote:
>
> > Then I want to tell the system how much storage I want for what purpose.
> > If Joe Blow is to get 20G of storage for his ~, I want to tell the
> > system there is a thing called joeb and it has a hard quota of 20G. The
> > software must then go and do all the magic, because I am tired of doing
> > the magic myself.
>
> It's a shame there appears to be no equivalent of a soft quota in ZFS.
> Maybe it is the use of the term quota that is misleading, when in reality
> it is more akin to volume size.
The quota concept in ZFS ist just different...
While Linux just uses the Melbourne Quota code that has been written for *BSD,
zfs uses a new concept that fits the constraints of a COW filesystem with
writable snapshots.
ZFS may on the other side may allow to write much more than in the limitation
data as the quota is checked only when a sync() happens (which is aprox. every
3 seconds).
Jörg
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