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zsh hybrid pools

ZFS Cool stuff

taken from https://pthree.org/2012/12/04/zfs-administration-part-i-vdevs/

Types

There are seven types of VDEVs in ZFS:

disk:(default)- The physical hard drives in your system.
file:The absolute path of pre-allocated files/images.
mirror:Standard software RAID-1 mirror.
raidz1/2/3:Non-standard distributed parity-based software RAID levels.
spare:Hard drives marked as a "hot spare" for ZFS software RAID.
cache:Device used for a level 2 adaptive read cache (L2ARC).
log:A separate log (SLOG) called the "ZFS Intent Log" or ZIL.
# zpool create tank mirror /tmp/file1 /tmp/file2 mirror /tmp/file3 /tmp/file4 log mirror sde sdf cache sdg sdh
# zpool status tank
  pool: tank
state: ONLINE
scan: none requested
config:

        NAME            STATE     READ WRITE CKSUM
        tank            ONLINE       0     0     0
          mirror-0      ONLINE       0     0     0
            /tmp/file1  ONLINE       0     0     0
            /tmp/file2  ONLINE       0     0     0
      mirror-1      ONLINE       0     0     0
        /tmp/file3  ONLINE       0     0     0
        /tmp/file4  ONLINE       0     0     0
    logs
      mirror-2      ONLINE       0     0     0
            sde         ONLINE       0     0     0
            sdf         ONLINE       0     0     0
        cache
          sdg           ONLINE       0     0     0
      sdh           ONLINE       0     0     0

errors: No known data errors
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