On 09 March, 2009 - Lars-Gunnar Persson sent me these 1,1K bytes:

> I've a interesting situation. I've created two pool now and one pool  
> named "Data" and another named "raid5". Check the details here:
>
> bash-3.00# zpool list
> NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
> Data                   10.7T   9.82T    892G    91%  ONLINE     -
> raid5                  10.9T    145K   10.9T     0%  ONLINE     -
>
> As you see, the sizes are approximately the same. If I run the df  
> command, it reports:
>
> bash-3.00# df -h /Data
> Filesystem             size   used  avail capacity  Mounted on
> Data                    11T   108M   154G     1%    /Data
> bash-3.00# df -h /raid5
> Filesystem             size   used  avail capacity  Mounted on
> raid5                  8.9T    40K   8.9T     1%    /raid5
>
> You see that the Data has 11 TB when zpool reported 10.7 TB and the  
> raid5 has 10.9TB in zpool but only 8.9 TB when using df. Thats a  
> difference of 2 TB. Where did they go?

To your raid5 (raidz) parity.

Check 'zpool status' to see how your two pools differ.. zpool list shows
the disk space you have.. zfs/df shows how much you can store there..

/Tomas
-- 
Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/
|- Student at Computing Science, University of Umeå
`- Sysadmin at {cs,acc}.umu.se
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