Provided by: zfsutils-linux_2.3.2-1ubuntu3_amd64 
NAME
zpool-list — list information about ZFS storage pools
SYNOPSIS
zpool list [-HgLpPv] [-j [--json-int, --json-pool-key-guid]] [-o property[,property]…] [-T u|d] [pool]…
[interval [count]]
DESCRIPTION
Lists the given pools along with a health status and space usage. If no pools are specified, all pools
in the system are listed. When given an interval, the information is printed every interval seconds
until killed. If count is specified, the command exits after count reports are printed.
-j, --json [--json-int, --json-pool-key-guid]
Display the list of pools in JSON format. Specify --json-int to display the numbers in integer
format instead of strings. Specify --json-pool-key-guid to set pool GUID as key for pool objects
instead of pool names.
-g Display vdev GUIDs instead of the normal device names. These GUIDs can be used in place of
device names for the zpool detach/offline/remove/replace commands.
-H Scripted mode. Do not display headers, and separate fields by a single tab instead of arbitrary
space.
-o property
Comma-separated list of properties to display. See the zpoolprops(7) manual page for a list of
valid properties. The default list is name, size, allocated, free, checkpoint, expandsize,
fragmentation, capacity, dedupratio, health, altroot.
-L Display real paths for vdevs resolving all symbolic links. This can be used to look up the
current block device name regardless of the /dev/disk path used to open it.
-p Display numbers in parsable (exact) values.
-P Display full paths for vdevs instead of only the last component of the path. This can be used in
conjunction with the -L flag.
-T u|d Display a time stamp. Specify u for a printed representation of the internal representation of
time. See time(1). Specify d for standard date format. See date(1).
-v Verbose statistics. Reports usage statistics for individual vdevs within the pool, in addition
to the pool-wide statistics.
EXAMPLES
Example 1: Listing Available ZFS Storage Pools
The following command lists all available pools on the system. In this case, the pool zion is faulted
due to a missing device. The results from this command are similar to the following:
# zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
rpool 19.9G 8.43G 11.4G - 33% 42% 1.00x ONLINE -
tank 61.5G 20.0G 41.5G - 48% 32% 1.00x ONLINE -
zion - - - - - - - FAULTED -
Example 2: Displaying expanded space on a device
The following command displays the detailed information for the pool data. This pool is comprised of a
single raidz vdev where one of its devices increased its capacity by 10 GiB. In this example, the pool
will not be able to utilize this extra capacity until all the devices under the raidz vdev have been
expanded.
# zpool list -v data
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
data 23.9G 14.6G 9.30G - 48% 61% 1.00x ONLINE -
raidz1 23.9G 14.6G 9.30G - 48%
sda - - - - -
sdb - - - 10G -
sdc - - - - -
Example 3: Displaying expanded space on a device
The following command lists all available pools on the system in JSON format.
# zpool list -j | jq
{
"output_version": {
"command": "zpool list",
"vers_major": 0,
"vers_minor": 1
},
"pools": {
"tank": {
"name": "tank",
"type": "POOL",
"state": "ONLINE",
"guid": "15220353080205405147",
"txg": "2671",
"spa_version": "5000",
"zpl_version": "5",
"properties": {
"size": {
"value": "111G",
"source": {
"type": "NONE",
"data": "-"
}
},
"allocated": {
"value": "30.8G",
"source": {
"type": "NONE",
"data": "-"
}
},
"free": {
"value": "80.2G",
"source": {
"type": "NONE",
"data": "-"
}
},
"checkpoint": {
"value": "-",
"source": {
"type": "NONE",
"data": "-"
}
},
"expandsize": {
"value": "-",
"source": {
"type": "NONE",
"data": "-"
}
},
"fragmentation": {
"value": "0%",
"source": {
"type": "NONE",
"data": "-"
}
},
"capacity": {
"value": "27%",
"source": {
"type": "NONE",
"data": "-"
}
},
"dedupratio": {
"value": "1.00x",
"source": {
"type": "NONE",
"data": "-"
}
},
"health": {
"value": "ONLINE",
"source": {
"type": "NONE",
"data": "-"
}
},
"altroot": {
"value": "-",
"source": {
"type": "DEFAULT",
"data": "-"
}
}
}
}
}
}
SEE ALSO
zpool-import(8), zpool-status(8)
OpenZFS March 16, 2022 ZPOOL-LIST(8)