ZFS boot
Nate Eldredge
neldredge at math.ucsd.edu
Sat Oct 11 20:53:36 UTC 2008
On Sat, 11 Oct 2008, Freddie Cash wrote:
> On 10/11/08, Matthew Dillon <dillon at apollo.backplane.com> wrote:
>> With regards to the traditional BSD partitioning scheme, having a
>> separate /usr, /home, /tmp, etc... there's no reason to do that stuff
>> any more with ZFS (or HAMMER).
>
> As separate partitions, no. As separate filesystems, definitely.
>
> While HAMMER PFSes may not support these things yet, ZFS allows you to
> tailor each filesystem to its purpose. For example, you can enable
> compression on /usr/ports, but have a separate /usr/ports/distfilles
> and /usr/ports/work that aren't compressed. Or /usr/src compressed
> and /usr/obj not. Have a small record (block) size for /usr/src, but
> a larger one for /home. Give each user a separate filesystem for
> their /home/<username>, with separate snapshot policies, quotas, and
> reservations (initial filesystem size).
All this about ZFS sounds great, and I'd like to try it out, but some of
the bugs, etc, listed at http://wiki.freebsd.org/ZFSKnownProblems are
rather alarming. Even on a personal machine, I don't want these features
at the cost of an unstable system. Is that list still current?
FWIW, my system is amd64 with 1 G of memory, which the page implies is
insufficient. Is it really?
--
Nate Eldredge
neldredge at math.ucsd.edu
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