zfs in ubuntu 19.10

# References
https://docs.oracle.com/cd/E19253-01/819-5461/gayog/index.html

https://gist.github.com/satmandu/4da5e900c2c80c93da38c76537291507

# Commands to add a zfs volume
sudo zfs create -o mountpoint=/home/me/workspace rpool/USERDATA/me_workspace1_c7bzj1

sudo zfs create -o mountpoint=/home/me/VirtualBoxVMs rpool/USERDATA/me_virtualbox_c7bzj1

# create partitions for a new disk to be used by zfs

Disk /dev/sdb: 894.26 GiB, 960197124096 bytes, 1875385008 sectors
Disk model: Crucial_CT960M50
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: F65C716F-49FE-0847-868C-412289E32D81

Device        Start        End    Sectors   Size Type
/dev/sdb1      2048    1050623    1048576   512M EFI System
/dev/sdb2   1050624    1153023     102400    50M Linux filesystem
/dev/sdb3   1153024   80844799   79691776    38G Linux swap
/dev/sdb4  80844800   85039103    4194304     2G Solaris boot
/dev/sdb5  85039104 1875384974 1790345871 853.7G Solaris root

# list by-id
$ ls -al /dev/disk/by-id
lrwxrwxrwx 1 root root   9 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497 -> ../../sdb
lrwxrwxrwx 1 root root  10 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497-part1 -> ../../sdb1
lrwxrwxrwx 1 root root  10 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497-part2 -> ../../sdb2
lrwxrwxrwx 1 root root  10 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497-part3 -> ../../sdb3
lrwxrwxrwx 1 root root  10 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497-part4 -> ../../sdb4
lrwxrwxrwx 1 root root  10 Dec  1 22:40 ata-Crucial_CT960M500SSD1_13250940E497-part5 -> ../../sdb5

# create zpool by-id
sudo zpool create spool ata-Crucial_CT960M500SSD1_13250940E497-part5

# create the file system with properties similar to rpool
sudo zfs create -o utf8only=on -o normalization=formD -o mountpoint=none spool/STORAGE
sudo zfs set compression=lz4 spool
sudo zfs set xattr=sa spool
sudo zfs set dnodesize=auto spool
sudo zfs set acltype=posixacl spool
sudo zfs set relatime=on spool
sudo zfs create -o mountpoint=/opt/storage spool/STORAGE/ubuntu_rjrf4u
sudo zfs create -o mountpoint=/opt/storage/me spool/STORAGE/me_storage_c7bzj1

# destroy zpool
sudo zpool destroy spool

# take a snapshot
zfs snapshot rpool/USERDATA/me_workspace1_c7bzj1@$(date +%F_%H:%M:%S)

# list snapshots
zfs list -t snapshot

# spool doesn't auto mount at boot. follow the solution in
bug: https://bugs.launchpad.net/ubuntu/+source/zsys/+bug/1849522
https://gist.github.com/satmandu/4da5e900c2c80c93da38c76537291507