Disk added to Volume not utilised or appearing when running zpool status

[jimay3677]

OK, I've create a ZFS volume with 8 disks, 4 mirrors.
The webui list ada2-9 as being part of the volume but the space doesn't correlate to the amount of disks.

If I run a zpool status it lists only 6 disks, 3 mirrors.

what the?

 

[jimay3677]

Here are the result of zpool status and gpart show
As I said, according to the webui ada8 and ada9 are members of the VOL1 volume.

zpool status
pool: VOL1
state: ONLINE
scrub: none requested
config:

NAME STATE READ WRITE CKSUM
VOL1 ONLINE 0 0 0
mirror ONLINE 0 0 0
gpt/ada2 ONLINE 0 0 0
gpt/ada3 ONLINE 0 0 0
mirror ONLINE 0 0 0
gpt/ada4 ONLINE 0 0 0
gpt/ada5 ONLINE 0 0 0
mirror ONLINE 0 0 0
gpt/ada6 ONLINE 0 0 0
gpt/ada7 ONLINE 0 0 0
cache
gpt/ada1 ONLINE 0 0 0

errors: No known data errors
wangnas# gpart show
=> 63 7839657 ada0 MBR (3.7G)
63 953505 1 freebsd [active] (466M)
953568 63 - free - (32K)
953631 953505 2 freebsd (466M)
1907136 3024 3 freebsd (1.5M)
1910160 41328 4 freebsd (20M)
1951488 5888232 - free - (2.8G)

=> 0 953505 ada0s1 BSD (466M)
0 16 - free - (8.0K)
16 953489 1 !0 (466M)

=> 34 117231341 ada1 GPT (56G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 113036943 2 freebsd-zfs (54G)

=> 34 976773101 ada2 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 34 976773101 ada3 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 34 976773101 ada4 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 34 976773101 ada5 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 34 976773101 ada6 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 34 976773101 ada7 GPT (466G)
34 94 - free - (47K)
128 4194304 1 freebsd-swap (2.0G)
4194432 972578703 2 freebsd-zfs (464G)

=> 63 976773105 ada8 MBR (466G)
63 976773105 - free - (466G)

=> 63 976773105 ada9 MBR (466G)
63 976773105 - free - (466G)

I've tried

gpart create -s gpt /dev/ada8

but I get

geom 'ada8': File exists

I'm tempted to do a gpart destroy but what will that do to my zpool?
I've also noticed swap space on my SSD

Thanks.