Different sizes between zfs list and zpool list

[Freddie Cash]

On Wed, May 5, 2010 at 8:44 AM, Tom Evans <tevans.uk at googlemail.com> wrote:

> When looking at the size of a pool, this information can be got from
> both zpool list and zfs list:
>
> > $ zfs list
> NAME                       USED  AVAIL  REFER  MOUNTPOINT
> tank                      5.69T   982G  36.5K  /tank
>
> > $ zpool list
> NAME   SIZE   USED  AVAIL    CAP  HEALTH  ALTROOT
> tank  8.14T  6.86T  1.28T    84%  ONLINE  -
>
> Why the different sizes?
> The pool is a raidz of 6 x 1.5 TB drives.
>

zpool lists the raw storage available to the pool.  Every single bit of
every single drive is listed here.  This will be 6 x 1 TB.

zfs lists only the amount of storage available to be used, after all
redundancy is taken into account.  This will be 5 x 1 TB.

-- 
Freddie Cash
fjwcash at gmail.com