zfs-list.8

ZFS-LIST(8)

System Manager's Manual

ZFS-LIST(8)

NAME

zfs-list — list properties of ZFS datasets

SYNOPSIS

zfs list [-r|-d depth] [-Hp] [-j [--json-int]] [-o property[,property]…] [-s property]… [-S property]… [-t type[,type]…] [filesystem|volume|snapshot]…

DESCRIPTION

By default, all file systems and volumes are displayed, with the following fields: name, used, available, referenced, mountpoint. Snapshots are displayed if the listsnapshots pool property is on (the default is off) or if the -t snapshot or -t all options are specified.

-H

Used for scripting mode. Do not print headers, and separate fields by a single tab instead of arbitrary white space.

-j, --json [--json-int]

Print the output in JSON format. Specify --json-int to print the numbers in integer format instead of strings in JSON output.

-d depth

Recursively display any children of the dataset, limiting the recursion to depth. A depth of 1 will display only the dataset and its direct children.

-o property

A comma-separated list of properties to display. Each property must be:

One of the properties described in the Native Properties section of zfsprops(7)
A user property
The value name to display the dataset name
The value space to display space usage properties on file systems and volumes. This is a shortcut for specifying -o name,avail,used,usedsnap,usedds,usedrefreserv,usedchild -t filesystem,volume.

-p

Display numbers in parsable (exact) values.

-r

Recursively display any children of the dataset on the command line.

-s property

A property for sorting the output by column in ascending order based on the value of the property. The property must be one of the properties described in the Properties section of zfsprops(7) or the value name to sort by the dataset name. Multiple properties can be specified to operate together using multiple -s or -S options. Multiple -s and -S options are evaluated from left to right to supply sort keys in decreasing order of priority. Property types operate as follows:

Numeric types sort in numeric order.
String types sort in alphabetical order.
Types inappropriate for a row sort that row to the literal bottom, regardless of the specified ordering.

If no sort columns are specified, or if two lines of output would sort equally across all specified columns, then datasets and bookmarks are sorted by name, whereas snapshots are sorted first by the name of their dataset and then by the time of their creation. When no sort columns are specified but snapshots are listed, this default behavior causes snapshots to be grouped under their datasets in chronological order by creation time.

-S property

Same as -s, but sorts by property in descending order.

-t type

A comma-separated list of types to display, where type is one of filesystem, snapshot, volume, bookmark, or all. For example, specifying -t snapshot displays only snapshots. fs, snap, or vol can be used as aliases for filesystem, snapshot, or volume.

EXAMPLES

Example 1: Listing ZFS Datasets

The following command lists all active file systems and volumes in the system. Snapshots are displayed if listsnaps=on. The default is off. See zpoolprops(7) for more information on pool properties.

# zfs list
NAME                      USED  AVAIL  REFER  MOUNTPOINT
pool                      450K   457G    18K  /pool
pool/home                 315K   457G    21K  /export/home
pool/home/anne             18K   457G    18K  /export/home/anne
pool/home/bob             276K   457G   276K  /export/home/bob

Example 2: Listing ZFS filesystems and snapshots in JSON format

# zfs list -j -t filesystem,snapshot | jq
{
  "output_version": {
    "command": "zfs list",
    "vers_major": 0,
    "vers_minor": 1
  },
  "datasets": {
    "pool": {
      "name": "pool",
      "type": "FILESYSTEM",
      "pool": "pool",
      "properties": {
        "used": {
          "value": "290K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "available": {
          "value": "30.5G",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "referenced": {
          "value": "24K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "mountpoint": {
          "value": "/pool",
          "source": {
            "type": "DEFAULT",
            "data": "-"
          }
        }
      }
    },
    "pool/home": {
      "name": "pool/home",
      "type": "FILESYSTEM",
      "pool": "pool",
      "properties": {
        "used": {
          "value": "48K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "available": {
          "value": "30.5G",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "referenced": {
          "value": "24K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "mountpoint": {
          "value": "/mnt/home",
          "source": {
            "type": "LOCAL",
            "data": "-"
          }
        }
      }
    },
    "pool/home/bob": {
      "name": "pool/home/bob",
      "type": "FILESYSTEM",
      "pool": "pool",
      "properties": {
        "used": {
          "value": "24K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "available": {
          "value": "30.5G",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "referenced": {
          "value": "24K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "mountpoint": {
          "value": "/mnt/home/bob",
          "source": {
            "type": "INHERITED",
            "data": "pool/home"
          }
        }
      }
    },
    "pool/home/bob@v1": {
      "name": "pool/home/bob@v1",
      "type": "SNAPSHOT",
      "pool": "pool",
      "dataset": "pool/home/bob",
      "snapshot_name": "v1",
      "properties": {
        "used": {
          "value": "0B",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "available": {
          "value": "-",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "referenced": {
          "value": "24K",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        },
        "mountpoint": {
          "value": "-",
          "source": {
            "type": "NONE",
            "data": "-"
          }
        }
      }
    }
  }
}