Too much free space on FreeNAS - ZFS
- by Guillaume
I have a FreeNAS server with 3 x 2 To disks in raidz1. I would expect to have about 4 To of space available. When I run zpool list I get:
[root@freenas] ~# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
main_volume 5.44T 3.95T 1.49T 72% ONLINE /mnt
I was expecting a size of 4 To.
Also, used space as reported by zpool list does not match what's reported by du:
[root@freenas] ~# du -sh /mnt/main_volume/
2.6T /mnt/main_volume/
There are quite a few things that I dont yet completely understand about ZFS. But at the moment I am mostly worried that I misconfigured my system and that I dont have any storage redundancy. How can I make sure I did not do an horrible mistake ...
For the sake of completeness, here is the output of zpool status:
[root@freenas] ~# zpool status
pool: main_volume
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
main_volume ONLINE 0 0 0
raidz1 ONLINE 0 0 0
gptid/d8584e45-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0
gptid/d8f7df30-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0
gptid/d9877cc3-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0
errors: No known data errors