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ZFS-SET(8) System Manager's Manual ZFS-SET(8) NAME zfs-set -- set properties on ZFS datasets SYNOPSIS zfs set [-u] property=value [property=value] filesystem|volume|snapshot zfs get [-r|-d depth] [-Hp] [-o field[,field]] [-s source[,source]] [-t type[,type]] all|property[,property] [filesystem|volume|snapshot|bookmark] zfs inherit [-rS] property filesystem|volume|snapshot DESCRIPTION zfs set [-u] property=value [property=value] filesystem|volume|snapshot Only some properties can be edited. See zfsprops(7) for more infor- mation on what properties can be set and acceptable values. Numeric values can be specified as exact values, or in a human-readable form with a suffix of B, K, M, G, T, P, E, Z (for bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, exabytes, or zettabytes, respectively). User properties can be set on snapshots. For more information, see the User Properties section of zfsprops(7). -u Update mountpoint, sharenfs, sharesmb property but do not mount or share the dataset. zfs get [-r|-d depth] [-Hp] [-o field[,field]] [-s source[,source]] [-t type[,type]] all|property[,property] [filesystem|volume|snapshot|bookmark] Displays properties for the given datasets. If no datasets are spec- ified, then the command displays properties for all datasets on the system. For each property, the following columns are displayed: name Dataset name property Property name value Property value source Property source local, default, inherited, temporary, received, or - (none). All columns are displayed by default, though this can be controlled by using the -o option. This command takes a comma-separated list of properties as described in the "Native Properties" and "User Properties" sections of zfsprops(7). The value all can be used to display all properties that apply to the given dataset's type (filesystem, volume, snapshot, or bookmark). -H Display output in a form more easily parsed by scripts. Any headers are omitted, and fields are explicitly sepa- rated by a single tab instead of an arbitrary amount of space. -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 field A comma-separated list of columns to display, defaults to name,property,value,source. -p Display numbers in parsable (exact) values. -r Recursively display properties for any children. -s source A comma-separated list of sources to display. Those prop- erties coming from a source other than those in this list are ignored. Each source must be one of the following: local, default, inherited, temporary, received, or none. The default value is all sources. -t type A comma-separated list of types to display, where type is one of filesystem, snapshot, volume, bookmark, or all. zfs inherit [-rS] property filesystem|volume|snapshot Clears the specified property, causing it to be inherited from an an- cestor, restored to default if no ancestor has the property set, or with the -S option reverted to the received value if one exists. See zfsprops(7) for a listing of default values, and details on which properties can be inherited. -r Recursively inherit the given property for all children. -S Revert the property to the received value, if one exists; other- wise, for non-inheritable properties, to the default; otherwise, operate as if the -S option was not specified. EXAMPLES Example 1: Creating a ZFS File System Hierarchy The following commands create a file system named pool/home and a file system named pool/home/bob. The mount point /export/home is set for the parent file system, and is automatically inherited by the child file system. # zfs create pool/home # zfs set mountpoint=/export/home pool/home # zfs create pool/home/bob Example 2: Disabling and Enabling File System Compression The following command disables the compression property for all file systems under pool/home. The next command explicitly enables compression for pool/home/anne. # zfs set compression=off pool/home # zfs set compression=on pool/home/anne Example 3: Setting a Quota on a ZFS File System The following command sets a quota of 50 Gbytes for pool/home/bob: # zfs set quota=50G pool/home/bob Example 4: Listing ZFS Properties The following command lists all properties for pool/home/bob: # zfs get all pool/home/bob NAME PROPERTY VALUE SOURCE pool/home/bob type filesystem - pool/home/bob creation Tue Jul 21 15:53 2009 - pool/home/bob used 21K - pool/home/bob available 20.0G - pool/home/bob referenced 21K - pool/home/bob compressratio 1.00x - pool/home/bob mounted yes - pool/home/bob quota 20G local pool/home/bob reservation none default pool/home/bob recordsize 128K default pool/home/bob mountpoint /pool/home/bob default pool/home/bob sharenfs off default pool/home/bob checksum on default pool/home/bob compression on local pool/home/bob atime on default pool/home/bob devices on default pool/home/bob exec on default pool/home/bob setuid on default pool/home/bob readonly off default pool/home/bob zoned off default pool/home/bob snapdir hidden default pool/home/bob acltype off default pool/home/bob aclmode discard default pool/home/bob aclinherit restricted default pool/home/bob canmount on default pool/home/bob xattr on default pool/home/bob copies 1 default pool/home/bob version 4 - pool/home/bob utf8only off - pool/home/bob normalization none - pool/home/bob casesensitivity sensitive - pool/home/bob vscan off default pool/home/bob nbmand off default pool/home/bob sharesmb off default pool/home/bob refquota none default pool/home/bob refreservation none default pool/home/bob primarycache all default pool/home/bob secondarycache all default pool/home/bob usedbysnapshots 0 - pool/home/bob usedbydataset 21K - pool/home/bob usedbychildren 0 - pool/home/bob usedbyrefreservation 0 - The following command gets a single property value: # zfs get -H -o value compression pool/home/bob on The following command lists all properties with local settings for pool/home/bob: # zfs get -r -s local -o name,property,value all pool/home/bob NAME PROPERTY VALUE pool/home/bob quota 20G pool/home/bob compression on Example 5: Inheriting ZFS Properties The following command causes pool/home/bob and pool/home/anne to in- herit the checksum property from their parent. # zfs inherit checksum pool/home/bob pool/home/anne Example 6: Setting User Properties The following example sets the user-defined com.example:department property for a dataset: # zfs set com.example:department=12345 tank/accounting Example 7: Setting sharenfs Property Options on a ZFS File System The following commands show how to set sharenfs property options to en- able read-write access for a set of IP addresses and to enable root ac- cess for system "neo" on the tank/home file system: # zfs set sharenfs='rw=@123.123.0.0/16:[::1],root=neo' tank/home If you are using DNS for host name resolution, specify the fully-quali- fied hostname. SEE ALSO zfsprops(7), zfs-list(8) FreeBSD 14.3 March 16, 2022 ZFS-SET(8)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO
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