Space have disappeared, and not..Child have more space then parent..

[sttsll]

Hi

I have a problem

I run 6 * 2Tb in raidz1, (should give approx 8.5 to 9 Tb effective, or ?).

I have for over 1 year hade near 8.5Tb (happy with that), but recently I discovered that some of my volumes have only approx 6Tb space. The strange thing is that NAS/Media shows 8.3, but NAS as parent only show 5.7. How is that possible ?


NAS /mnt/NAS 188.9 MiB (0%) 5.7 TiB 5.7 TiB HEALTHY
NAS/Backup /mnt/NAS/Backup 259.4 GiB (4%) 5.7 TiB 5.9 TiB HEALTHY
NAS/Media /mnt/NAS/Media 2.6 TiB (31%) 5.7 TiB 8.3 TiB HEALTHY
NAS/arb /mnt/NAS/arb 28.9 GiB (0%) 5.7 TiB 5.7 TiB HEALTHY


The result after scrub seems fine as below, or is somthing wrong with "ada2p2" ? ;

[root@freenas ~]# zpool status -v
pool: NAS
state: ONLINE
scrub: none requested
config:

NAME STATE READ WRITE CKSUM
NAS ONLINE 0 0 0
raidz1 ONLINE 0 0 0
gpt/disk0 ONLINE 0 0 0
gpt/disk1 ONLINE 0 0 0
ada2p2 ONLINE 0 0 0
gpt/disk3 ONLINE 0 0 0
gpt/disk4 ONLINE 0 0 0
gpt/disk5 ONLINE 0 0 0

errors: No known data errors
[root@freenas ~]#



Suggestions ? I run 8.2

 

[Brosif_My_Nif]

I thought I was having a space problem recently. Discovered that I had a few snapshots that were hogging all my space. You may want to check those because they will reduce the total size of the pool like you're seeing.