Listing Information About All Storage Pools

With no arguments, the command displays all the fields for all pools on the system. For example:

# zpool list
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
tank                   80.0G   22.3G   47.7G    28%  ONLINE     -
dozer                   1.2T    384G    816G    32%  ONLINE     -

This output displays the following information:

NAME

The name of the pool.

SIZE

The total size of the pool, equal to the sum of the size of all top-level virtual devices.

USED

The amount of space allocated by all datasets and internal metadata. Note that this amount is different from the amount of space as reported at the file system level.

For more information about determining available file system space, see ZFS Space Accounting.

AVAILABLE

The amount of unallocated space in the pool.

CAPACITY (CAP)

The amount of space used, expressed as a percentage of total space.

HEALTH

The current health status of the pool.

For more information about pool health, see Determining the Health Status of ZFS Storage Pools.

ALTROOT

The alternate root of the pool, if any.

For more information about alternate root pools, see Using ZFS Alternate Root Pools.

You can also gather statistics for a specific pool by specifying the pool name. For example:

# zpool list tank
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
tank                   80.0G   22.3G   47.7G    28%  ONLINE     -