$ egrep -v '^#|^$' /etc/modprobe.d/zfs.conf
options zfs zfs_arc_max=3221225472
options zfs zfs_vdev_scheduler=cfq$ sudo zpool history | head -480 | grep -v import
History for 'tank':
2017-12-10.18:09:40 zpool create -o ashift=12 tank /dev/disk/by-id/wwn-0x5000039fe6d37a87
2017-12-10.18:13:17 zfs create -o mountpoint=/mnt/homes tank/homes
2017-12-10.18:14:26 zfs set atime=off tank
2017-12-10.18:14:52 zfs set atime=off tank/homes
2017-12-10.18:15:07 zfs set relatime=on tank/homes
2017-12-10.18:15:14 zfs set relatime=on tank
2017-12-10.18:15:55 zfs set compression=on tank/homes
2017-12-10.18:18:04 zfs set compression=lz4 tank/homes
2017-12-17.01:09:20 zfs set mountpoint=/home tank/homes
2018-01-02.01:59:12 zpool attach tank wwn-0x5000039fe6d37a87 wwn-0x5000c50079c65faf
2018-01-02.04:30:59 zpool add tank cache wwn-0x5707c181003b37e5-part1 wwn-0x5707c181003b37e5-part2
2018-01-14.00:24:08 zpool scrub tank
2018-01-20.18:54:38 zpool remove tank wwn-0x5707c181003b37e5-part1
2018-01-20.18:55:12 zpool add tank log wwn-0x5707c181003b37e5-part1
2018-01-20.18:57:06 zfs set sync=always tank
2018-02-11.00:24:09 zpool scrub tank
2018-03-11.00:24:09 zpool scrub tank
2018-03-17.01:57:13 zfs set sync=standard tank
2018-04-08.00:24:09 zpool scrub tank
2018-04-28.03:20:11 zfs create -s -V 60G tank/docker
2018-04-28.03:28:12 zfs set compression=on tank/docker
2018-04-28.03:38:47 zfs destroy tank/docker
2018-05-13.00:24:09 zpool scrub tank
2018-06-10.00:24:09 zpool scrub tank
2018-08-12.00:24:09 zpool scrub tank
2018-09-09.00:24:09 zpool scrub tank
2018-09-25.01:11:39 zfs create tank/docker
2018-09-25.01:15:39 zfs set mountpoint=/var/lib/docker/ tank/docker
2018-09-25.01:15:59 zfs set mountpoint=/var/lib/docker tank/docker
$ zfs list -o name,used,logicalused,avail,logicalreferenced,refer,mountpoint,compression,refcompressratio,compressratio | grep -v legacy
NAME USED LUSED AVAIL LREFER REFER MOUNTPOINT COMPRESS REFRATIO RATIO
tank 2,29T 2,55T 348G 40K 96K /tank off 1.00x 1.11x
tank/docker 923M 1,48G 348G 25,6M 9,27M /var/lib/docker lz4 3.18x 1.74x
tank/homes 2,29T 2,54T 348G 2,54T 2,29T /home lz4 1.11x 1.11x
tank/libvirt 688M 1,19G 348G 1,19G 688M /var/lib/libvirt lz4 1.77x 1.77x
$ zpool status
pool: tank
state: ONLINE
scan: scrub canceled on Sun Apr 14 03:58:33 2019
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
wwn-0x5000039fe6d37a87 ONLINE 0 0 0
wwn-0x5000c50079c65faf ONLINE 0 0 0
logs
wwn-0x5707c181003b37e5-part1 ONLINE 0 0 0
cache
wwn-0x5707c181003b37e5-part2 ONLINE 0 0 0
errors: No known data errors