On 06/06/11 08:07, Cyril Plisko wrote:
zpool reports space usage on disks, without taking into account RAIDZ overhead.
zfs reports net capacity available, after RAIDZ overhead accounted for.
Yup. Going back to the original numbers:
nebol@filez:/$ zfs list tank2
NAME USED AVAIL REFER MOUNTPOINT
tank2 3.12T 902G 32.9K /tank2
Given that it's a 4-disk raidz1, you have (roughly) one block of parity
for every three blocks of data.
3.12T / 3 = 1.04T
so 3.12T + 1.04T = 4.16T, which is close to the 4.18T showed by zpool list:
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
tank2 5.44T 4.18T 1.26T 76% ONLINE
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