ZFS: List or view filesystems

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From the computer of: qmchenry (339 recipes)
Created: Jun 05, 2006

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It is worth repeating the distinction between ZFS pools and filesystems. A ZFS filesystem cannot exist outside of a ZFS pool. Creating a ZFS pool also creates a ZFS filesystem of the same name. Understanding the second part can help avoid confusion. This recipe describes the simple step to list the ZFS filesystems configured on the system.

Running the zfs list command will show all ZFS filesystems on the system:

The display shows a system configured with two pools: shiny (a mirror, although that cannot be seen from this view) and techrx. The only way to know these are pools is that they are top-level names -- techrx is a pool (and its associated filesystem) and techrx/home is a descendent filesystem under techrx.

Also of interest in this output, the filessytem techrx/home is mounted in the Solaris filesystem (the one you cd around in) under /export/home. Descendents of techrx/home are likewise under /export/home (like /export/home/qmchenry). It can be seen from the output that the filesystem techrx/home/davak has a 5M quota while other techrx/home filesystems show the same available disk space as techrx and techrx/home.