I am very new to zfs and I have build the following mirror with 4 x 12TB:
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zpool list
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
zfspool 10.9T 1.40T 9.51T - - 0% 12% 1.00x ONLINE
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zfs list
NAME USED AVAIL REFER MOUNTPOINT
zfspool 10.8T 1.98G 1.93M /Volumes/zfspool
zfspool/tmmini 508G 486G 24.1G -
zfspool/tmpro 2.03T 1.64T 400G -
zfspool/zfsvol 8.25T 7.27T 1008G -
I have tried to make zfsvol as big as possible and then I have build several APFS-Partitions (not visible in the output above) on it.
Know I am wondering if this was a good idea.
Where are the snapshots saved ? Is there enough space anywhere ?
Can I decrease zfsvol ? I would like to decrease it so that I have just 80% of the pool used. Is it possible to decrease with data in it ?
Regards
Tobias