| ZFS(1M) | Maintenance Commands | ZFS(1M) |
| zfs | [-?] |
| zfs | create [-p] [-o property=value]... filesystem |
| zfs | create [-ps] [-b blocksize] [-o property=value]... -V size volume |
| zfs | destroy [-Rfnprv] filesystem|volume |
| zfs | destroy [-Rdnprv] filesystem|volume@snap[%snap[,snap[%snap]]]... |
| zfs | destroy filesystem|volume#bookmark |
| zfs | snapshot [-r] [-o property=value]... filesystem@snapname|volume@snapname... |
| zfs | rollback [-Rfr] snapshot |
| zfs | clone [-p] [-o property=value]... snapshot filesystem|volume |
| zfs | promote clone-filesystem |
| zfs | rename [-f] filesystem|volume|snapshot filesystem|volume|snapshot |
| zfs | rename [-fp] filesystem|volume filesystem|volume |
| zfs | rename -r snapshot snapshot |
| zfs | list [-r|-d depth] [-Hp] [-o property[,property]...] [-s property]... [-S property]... [-t type[,type]...] [filesystem|volume|snapshot]... |
| zfs | set 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... |
| zfs | inherit [-rS] property filesystem|volume|snapshot... |
| zfs | upgrade |
| zfs | upgrade -v |
| zfs | upgrade [-r] [-V version] -a | filesystem |
| zfs | userspace [-Hinp] [-o field[,field]...] [-s field]... [-S field]... [-t type[,type]...] filesystem|snapshot |
| zfs | groupspace [-Hinp] [-o field[,field]...] [-s field]... [-S field]... [-t type[,type]...] filesystem|snapshot |
| zfs | mount |
| zfs | mount [-Ov] [-o options] -a | filesystem |
| zfs | unmount [-f] -a | filesystem|mountpoint |
| zfs | share -a | filesystem |
| zfs | unshare -a | filesystem|mountpoint |
| zfs | bookmark snapshot bookmark |
| zfs | send [-DLPRenpv] [[-I|-i] snapshot] snapshot |
| zfs | send [-Le] [-i snapshot|bookmark] filesystem|volume|snapshot |
| zfs | send [-Penv] -t receive_resume_token |
| zfs | receive [-Fnsuv] [-o origin=snapshot] filesystem|volume|snapshot |
| zfs | receive [-Fnsuv] [-d|-e] [-o origin=snapshot] filesystem |
| zfs | receive -A filesystem|volume |
| zfs | allow filesystem|volume |
| zfs | allow [-dglu] user|group[,user|group]... perm|@setname[,perm|@setname]... filesystem|volume |
| zfs | allow [-dl] -e|everyone perm|@setname[,perm|@setname]... filesystem|volume |
| zfs | allow -c perm|@setname[,perm|@setname]... filesystem|volume |
| zfs | allow -s @setname perm|@setname[,perm|@setname]... filesystem|volume |
| zfs | unallow [-dglru] user|group[,user|group]... [perm|@setname[,perm|@setname]...] filesystem|volume |
| zfs | unallow [-dlr] -e|everyone [perm|@setname[,perm|@setname]...] filesystem|volume |
| zfs | unallow [-r] -c [perm|@setname[,perm|@setname]...] filesystem|volume |
| zfs | unallow [-r] -s -@setname [perm|@setname[,perm|@setname]...] filesystem|volume |
| zfs | hold [-r] tag snapshot... |
| zfs | holds [-r] snapshot... |
| zfs | release [-r] tag snapshot... |
| zfs | diff [-FHt] snapshot snapshot|filesystem |
pool/{filesystem,volume,snapshot}
where the maximum length of a dataset name is MAXNAMELEN (256 bytes).
A dataset can be one of the following:
The root of the pool can be accessed as a file system, such as mounting and unmounting, taking snapshots, and setting properties. The physical storage characteristics, however, are managed by the zpool(1M) command.
See zpool(1M) for more information on creating and administering pools.
Snapshots can have arbitrary names. Snapshots of volumes can be cloned or rolled back, but cannot be accessed independently.
File system snapshots can be accessed under the .zfs/snapshot directory in the root of the file system. Snapshots are automatically mounted on demand and may be unmounted at regular intervals. The visibility of the .zfs directory can be controlled by the snapdir property.
Clones can only be created from a snapshot. When a snapshot is cloned, it creates an implicit dependency between the parent and child. Even though the clone is created somewhere else in the dataset hierarchy, the original snapshot cannot be destroyed as long as a clone exists. The origin property exposes this dependency, and the destroy command lists any such dependencies, if they exist.
The clone parent-child dependency relationship can be reversed by using the promote subcommand. This causes the “origin” file system to become a clone of the specified file system, which makes it possible to destroy the file system that the clone was created from.
By default, file systems are mounted under /path, where path is the name of the file system in the ZFS namespace. Directories are created and destroyed as needed.
A file system can also have a mount point set in the mountpoint property. This directory is created as needed, and ZFS automatically mounts the file system when the zfs mount -a command is invoked (without editing /etc/vfstab). The mountpoint property can be inherited, so if pool/home has a mount point of /export/stuff, then pool/home/user automatically inherits a mount point of /export/stuff/user.
A file system mountpoint property of none prevents the file system from being mounted.
If needed, ZFS file systems can also be managed with traditional tools (mount, umount, /etc/vfstab). If a file system's mount point is set to legacy, ZFS makes no attempt to manage the file system, and the administrator is responsible for mounting and unmounting the file system.
The physical properties of an added file system are controlled by the global administrator. However, the zone administrator can create, modify, or destroy files within the added file system, depending on how the file system is mounted.
A dataset can also be delegated to a non-global zone by using the zonecfg add dataset subcommand. You cannot delegate a dataset to one zone and the children of the same dataset to another zone. The zone administrator can change properties of the dataset or any of its children. However, the quota, filesystem_limit and snapshot_limit properties of the delegated dataset can be modified only by the global administrator.
A ZFS volume can be added as a device to a non-global zone by using the zonecfg add device subcommand. However, its physical properties can be modified only by the global administrator.
For more information about zonecfg syntax, see zonecfg(1M).
After a dataset is delegated to a non-global zone, the zoned property is automatically set. A zoned file system cannot be mounted in the global zone, since the zone administrator might have to set the mount point to an unacceptable value.
The global administrator can forcibly clear the zoned property, though this should be done with extreme care. The global administrator should verify that all the mount points are acceptable before clearing the property.
Every dataset has a set of properties that export statistics about the dataset as well as control various behaviors. Properties are inherited from the parent unless overridden by the child. Some properties apply only to certain types of datasets (file systems, volumes, or snapshots).
The values of numeric properties can be specified using human-readable suffixes (for example, k, KB, M, Gb, and so forth, up to Z for zettabyte). The following are all valid (and equal) specifications: 1536M, 1.5g, 1.50GB.
The values of non-numeric properties are case sensitive and must be lowercase, except for mountpoint, sharenfs, and sharesmb.
The following native properties consist of read-only statistics about the dataset. These properties can be neither set, nor inherited. Native properties apply to all dataset types unless otherwise noted.
This property can also be referred to by its shortened column name, avail.
This property can also be referred to by its shortened column name, lrefer.
This property can also be referred to by its shortened column name, lused.
This property can also be referred to by its shortened column name, refer.
When snapshots (see the Snapshots section) are created, their space is initially shared between the snapshot and the file system, and possibly with previous snapshots. As the file system changes, space that was previously shared becomes unique to the snapshot, and counted in the snapshot's space used. Additionally, deleting snapshots can increase the amount of space unique to (and used by) other snapshots.
The amount of space used, available, or referenced does not take into account pending changes. Pending changes are generally accounted for within a few seconds. Committing a change to a disk using fsync(3C) or O_SYNC does not necessarily guarantee that the space usage information is updated immediately.
Unprivileged users can access only their own space usage. The root user, or a user who has been granted the userused privilege with zfs allow, can access everyone's usage.
The userused@... properties are not displayed by zfs get all. The user's name must be appended after the @ symbol, using one of the following forms:
Unprivileged users can only access their own groups' space usage. The root user, or a user who has been granted the groupused privilege with zfs allow, can access all groups' usage.
This property can also be referred to by its shortened column name, volblock.
The snapshot may be specified as a short snapshot name (just the part after the @), in which case it will be interpreted as a snapshot in the same filesystem as this dataset. The snapshot may be a full snapshot name (filesystem@snapshot), which for clones may be a snapshot in the origin's filesystem (or the origin of the origin's filesystem, etc.)
The following native properties can be used to change the behavior of a ZFS dataset.
When the property value is set to passthrough, files are created with a mode determined by the inheritable ACEs. If no inheritable ACEs exist that affect the mode, then the mode is set in accordance to the requested mode from the application.
chmod(2) is required to change the set user ID, set group ID, or sticky bits on a file or directory, as they do not have equivalent ACEs. In order to use chmod(2) on a file or directory with a non-trivial ACL when aclmode is set to restricted, you must first remove all ACEs which do not represent the current mode.
When set to noauto, a dataset can only be mounted and unmounted explicitly. The dataset is not mounted automatically when the dataset is created or imported, nor is it mounted by the zfs mount -a command or unmounted by the zfs unmount -a command.
This property is not inherited.
The sha512, skein, and edonr checksum algorithms require enabling the appropriate features on the pool. Please see zpool-features(5) for more information on these algorithms.
Changing this property affects only newly-written data.
Setting compression to on indicates that the current default compression algorithm should be used. The default balances compression and decompression speed, with compression ratio and is expected to work well on a wide variety of workloads. Unlike all other settings for this property, on does not select a fixed compression type. As new compression algorithms are added to ZFS and enabled on a pool, the default compression algorithm may change. The current default compression algorthm is either lzjb or, if the lz4_compress feature is enabled, lz4.
The lz4 compression algorithm is a high-performance replacement for the lzjb algorithm. It features significantly faster compression and decompression, as well as a moderately higher compression ratio than lzjb, but can only be used on pools with the lz4_compress feature set to enabled. See zpool-features(5) for details on ZFS feature flags and the lz4_compress feature.
The lzjb compression algorithm is optimized for performance while providing decent data compression.
The gzip compression algorithm uses the same compression as the gzip(1) command. You can specify the gzip level by using the value gzip-N, where N is an integer from 1 (fastest) to 9 (best compression ratio). Currently, gzip is equivalent to gzip-6 (which is also the default for gzip(1)).
The zle compression algorithm compresses runs of zeros.
This property can also be referred to by its shortened column name compress. Changing this property affects only newly-written data.
Changing this property only affects newly-written data. Therefore, set this property at file system creation time by using the -o copies=N option.
When the mountpoint property is changed for a file system, the file system and any children that inherit the mount point are unmounted. If the new value is legacy, then they remain unmounted. Otherwise, they are automatically remounted in the new location if the property was previously legacy or none, or if they were mounted before the property was changed. In addition, any shared file systems are unshared and shared in the new location.
Quotas cannot be set on volumes, as the volsize property acts as an implicit quota.
Enforcement of user quotas may be delayed by several seconds. This delay means that a user might exceed their quota before the system notices that they are over quota and begins to refuse additional writes with the EDQUOT error message. See the zfs userspace subcommand for more information.
Unprivileged users can only access their own groups' space usage. The root user, or a user who has been granted the userquota privilege with zfs allow, can get and set everyone's quota.
This property is not available on volumes, on file systems before version 4, or on pools before version 15. The userquota@... properties are not displayed by zfs get all. The user's name must be appended after the @ symbol, using one of the following forms:
Unprivileged users can access only their own groups' space usage. The root user, or a user who has been granted the groupquota privilege with zfs allow, can get and set all groups' quotas.
This property can also be referred to by its shortened column name, rdonly.
For databases that create very large files but access them in small random chunks, these algorithms may be suboptimal. Specifying a recordsize greater than or equal to the record size of the database can result in significant performance gains. Use of this property for general purpose file systems is strongly discouraged, and may adversely affect performance.
The size specified must be a power of two greater than or equal to 512 and less than or equal to 128 Kbytes. If the large_blocks feature is enabled on the pool, the size may be up to 1 Mbyte. See zpool-features(5) for details on ZFS feature flags.
Changing the file system's recordsize affects only files created afterward; existing files are unaffected.
This property can also be referred to by its shortened column name, recsize.
When set to all, ZFS stores an extra copy of all metadata. If a single on-disk block is corrupt, at worst a single block of user data (which is recordsize bytes long) can be lost.
When set to most, ZFS stores an extra copy of most types of metadata. This can improve performance of random writes, because less metadata must be written. In practice, at worst about 100 blocks (of recordsize bytes each) of user data can be lost if a single on-disk block is corrupt. The exact behavior of which metadata blocks are stored redundantly may change in future releases.
The default value is all.
If refreservation is set, a snapshot is only allowed if there is enough free pool space outside of this reservation to accommodate the current number of “referenced” bytes in the dataset.
This property can also be referred to by its shortened column name, refreserv.
This property can also be referred to by its shortened column name, reserv.
Because SMB shares requires a resource name, a unique resource name is constructed from the dataset name. The constructed name is a copy of the dataset name except that the characters in the dataset name, which would be illegal in the resource name, are replaced with underscore (_) characters. A pseudo property “name” is also supported that allows you to replace the data set name with a specified name. The specified name is then used to replace the prefix dataset in the case of inheritance. For example, if the dataset data/home/john is set to name=john, then data/home/john has a resource name of john. If a child dataset data/home/john/backups is shared, it has a resource name of john_backups.
When SMB shares are created, the SMB share name appears as an entry in the .zfs/shares directory. You can use the ls or chmod command to display the share-level ACLs on the entries in this directory.
When the sharesmb property is changed for a dataset, the dataset and any children inheriting the property are re-shared with the new options, only if the property was previously set to off, or if they were shared before the property was changed. If the new property is set to off, the file systems are unshared.
When the sharenfs property is changed for a dataset, the dataset and any children inheriting the property are re-shared with the new options, only if the property was previously off, or if they were shared before the property was changed. If the new property is off, the file systems are unshared.
The reservation is kept equal to the volume's logical size to prevent unexpected behavior for consumers. Without the reservation, the volume could run out of space, resulting in undefined behavior or data corruption, depending on how the volume is used. These effects can also occur when the volume size is changed while it is in use (particularly when shrinking the size). Extreme care should be used when adjusting the volume size.
Though not recommended, a “sparse volume” (also known as “thin provisioning”) can be created by specifying the -s option to the zfs create -V command, or by changing the reservation after the volume has been created. A “sparse volume” is a volume where the reservation is less then the volume size. Consequently, writes to a sparse volume can fail with ENOSPC when the pool is low on space. For a sparse volume, changes to volsize are not reflected in the reservation.
The following three properties cannot be changed after the file system is created, and therefore, should be set when the file system is created. If the properties are not set with the zfs create or zpool create commands, these properties are inherited from the parent dataset. If the parent dataset lacks these properties due to having been created prior to these features being supported, the new file system will have the default values for these properties.
The mixed value for the casesensitivity property indicates that the file system can support requests for both case-sensitive and case-insensitive matching behavior. Currently, case-insensitive matching behavior on a file system that supports mixed behavior is limited to the SMB server product. For more information about the mixed value behavior, see the "ZFS Administration Guide".
The casesensitivity, normalization, and utf8only properties are also new permissions that can be assigned to non-privileged users by using the ZFS delegated administration feature.
PROPERTY MOUNT OPTION
devices devices/nodevices
exec exec/noexec
readonly ro/rw
setuid setuid/nosetuid
xattr xattr/noxattr
In addition, these options can be set on a per-mount basis using the -o option, without affecting the property that is stored on disk. The values specified on the command line override the values stored in the dataset. The nosuid option is an alias for nodevices,nosetuid. These properties are reported as “temporary” by the zfs get command. If the properties are changed while the dataset is mounted, the new setting overrides any temporary settings.
User property names must contain a colon (:) character to distinguish them from native properties. They may contain lowercase letters, numbers, and the following punctuation characters: colon (“:”), dash (“-”), period (“.”), and underscore (“_”). The expected convention is that the property name is divided into two portions such as module:property, but this namespace is not enforced by ZFS. User property names can be at most 256 characters, and cannot begin with a dash (“-”).
When making programmatic use of user properties, it is strongly suggested to use a reversed DNS domain name for the module component of property names to reduce the chance that two independently-developed packages use the same property name for different purposes.
The values of user properties are arbitrary strings, are always inherited, and are never validated. All of the commands that operate on properties (zfs list, zfs get, zfs set, and so forth) can be used to manipulate both native properties and user properties. Use the zfs inherit command to clear a user property . If the property is not defined in any parent dataset, it is removed entirely. Property values are limited to 1024 characters.
If you need to change your swap area or dump device after the system is installed or upgraded, use the swap(1M) and dumpadm(1M) commands.
size is automatically rounded up to the nearest 128 Kbytes to ensure that the volume has an integral number of blocks regardless of blocksize.
Extreme care should be taken when applying either the -r or the -R options, as they can destroy large portions of a pool and cause unexpected behavior for mounted file systems in use.
If a snapshot does not qualify for immediate destruction, it is marked for deferred deletion. In this state, it exists as a usable, visible snapshot until both of the preconditions listed above are met, at which point it is destroyed.
An inclusive range of snapshots may be specified by separating the first and last snapshots with a percent sign. The first and/or last snapshots may be left blank, in which case the filesystem's oldest or newest snapshot will be implied.
Multiple snapshots (or ranges of snapshots) of the same filesystem or volume may be specified in a comma-separated list of snapshots. Only the snapshot's short name (the part after the @) should be specified when using a range or comma-separated list to identify multiple snapshots.
Extreme care should be taken when applying either the -r or the -R options, as they can destroy large portions of a pool and cause unexpected behavior for mounted file systems in use.
The -rR options do not recursively destroy the child snapshots of a recursive snapshot. Only direct snapshots of the specified filesystem are destroyed by either of these options. To completely roll back a recursive snapshot, you must rollback the individual child snapshots.
The snapshot that was cloned, and any snapshots previous to this snapshot, are now owned by the promoted clone. The space they use moves from the origin file system to the promoted clone, so enough space must be available to accommodate these snapshots. No new space is consumed by this operation, but the space accounting is adjusted. The promoted clone must not have any conflicting snapshot names of its own. The rename subcommand can be used to rename any conflicting snapshots.
If no sorting options are specified the existing behavior of zfs list is preserved.
name Dataset name
property Property name
value Property value
source Property source. Can either be local, default,
temporary, inherited, 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.
The special value all can be used to display all properties that apply to the given dataset's type (filesystem, volume, snapshot, or bookmark).
In general, the file system version is independent of the pool version. See zpool(1M) for information on the zpool upgrade command.
In some cases, the file system version and the pool version are interrelated and the pool version must be upgraded before the file system version can be upgraded.
This feature must be enabled to be used. See zpool-features(5) for details on ZFS feature flags and the bookmarks feature.
If the -i or -I flags are used in conjunction with the -R flag, an incremental replication stream is generated. The current values of properties, and current snapshot and file system names are set when the stream is received. If the -F flag is specified when this stream is received, snapshots and file systems that do not exist on the sending side are destroyed.
If the destination is a clone, the source may be the origin snapshot, which must be fully specified (for example, pool/fs@origin, not just @origin).
The format of the stream is committed. You will be able to receive your streams on future versions of ZFS .
If the incremental target is a clone, the incremental source can be the origin snapshot, or an earlier snapshot in the origin's filesystem, or the origin's origin, etc.
If an incremental stream is received, then the destination file system must already exist, and its most recent snapshot must match the incremental stream's source. For zvols, the destination device link is destroyed and recreated, which means the zvol cannot be accessed during the receive operation.
When a snapshot replication package stream that is generated by using the zfs send -R command is received, any snapshots that do not exist on the sending location are destroyed by using the zfs destroy -d command.
The name of the snapshot (and file system, if a full stream is received) that this subcommand creates depends on the argument type and the use of the -d or -e options.
If the argument is a snapshot name, the specified snapshot is created. If the argument is a file system or volume name, a snapshot with the same name as the sent snapshot is created within the specified filesystem or volume. If neither of the -d or -e options are specified, the provided target snapshot name is used exactly as provided.
The -d and -e options cause the file system name of the target snapshot to be determined by appending a portion of the sent snapshot's name to the specified target filesystem. If the -d option is specified, all but the first element of the sent snapshot's file system path (usually the pool name) is used and any required intermediate file systems within the specified one are created. If the -e option is specified, then only the last element of the sent snapshot's file system name (i.e. the name of the source file system itself) is used as the target file system name.
The receive can be resumed with a stream generated by zfs send -t token, where the token is the value of the receive_resume_token property of the filesystem or volume which is received into.
To use this flag, the storage pool must have the extensible_dataset feature enabled. See zpool-features(5) for details on ZFS feature flags.
If neither of the -dl options are specified, or both are, then the permissions are allowed for the file system or volume, and all of its descendents.
Permissions are generally the ability to use a ZFS subcommand or change a ZFS property. The following permissions are available:
NAME TYPE NOTES
allow subcommand Must also have the permission that is being
allowed
clone subcommand Must also have the 'create' ability and 'mount'
ability in the origin file system
create subcommand Must also have the 'mount' ability
destroy subcommand Must also have the 'mount' ability
diff subcommand Allows lookup of paths within a dataset
given an object number, and the ability to
create snapshots necessary to 'zfs diff'.
mount subcommand Allows mount/umount of ZFS datasets
promote subcommand Must also have the 'mount'
and 'promote' ability in the origin file system
receive subcommand Must also have the 'mount' and 'create' ability
rename subcommand Must also have the 'mount' and 'create'
ability in the new parent
rollback subcommand Must also have the 'mount' ability
send subcommand
share subcommand Allows sharing file systems over NFS or SMB
protocols
snapshot subcommand Must also have the 'mount' ability
groupquota other Allows accessing any groupquota@... property
groupused other Allows reading any groupused@... property
userprop other Allows changing any user property
userquota other Allows accessing any userquota@... property
userused other Allows reading any userused@... property
aclinherit property
aclmode property
atime property
canmount property
casesensitivity property
checksum property
compression property
copies property
devices property
exec property
filesystem_limit property
mountpoint property
nbmand property
normalization property
primarycache property
quota property
readonly property
recordsize property
refquota property
refreservation property
reservation property
secondarycache property
setuid property
sharenfs property
sharesmb property
snapdir property
snapshot_limit property
utf8only property
version property
volblocksize property
volsize property
vscan property
xattr property
zoned property
If a hold exists on a snapshot, attempts to destroy that snapshot by using the zfs destroy command return EBUSY.
- The path has been removed + The path has been created M The path has been modified R The path has been renamed
B Block device C Character device / Directory > Door | Named pipe @ Symbolic link P Event port = Socket F Regular file
# zfs create pool/home # zfs set mountpoint=/export/home pool/home # zfs create pool/home/bob
# zfs snapshot pool/home/bob@yesterday
# zfs snapshot -r pool/home@yesterday # zfs destroy -r pool/home@yesterday
# zfs set compression=off pool/home # zfs set compression=on pool/home/anne
# 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
# zfs set quota=50G 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 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 onThe 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
# zfs rollback -r pool/home/anne@yesterday
# zfs clone pool/home/bob@yesterday pool/clone
# zfs create pool/project/production populate /pool/project/production with data # zfs snapshot pool/project/production@today # zfs clone pool/project/production@today pool/project/beta make changes to /pool/project/beta and test them # zfs promote pool/project/beta # zfs rename pool/project/production pool/project/legacy # zfs rename pool/project/beta pool/project/production once the legacy version is no longer needed, it can be destroyed # zfs destroy pool/project/legacy
# zfs inherit checksum pool/home/bob pool/home/anne
# zfs send pool/fs@a | \ ssh host zfs receive poolB/received/fs@a # zfs send -i a pool/fs@b | \ ssh host zfs receive poolB/received/fs
# zfs send poolA/fsA/fsB@snap | \ ssh host zfs receive -d poolB/received
# zfs set com.example:department=12345 tank/accounting
# zfs destroy -r pool/users@7daysago # zfs rename -r pool/users@6daysago @7daysago # zfs rename -r pool/users@5daysago @6daysago # zfs rename -r pool/users@yesterday @5daysago # zfs rename -r pool/users@yesterday @4daysago # zfs rename -r pool/users@yesterday @3daysago # zfs rename -r pool/users@yesterday @2daysago # zfs rename -r pool/users@today @yesterday # zfs snapshot -r pool/users@today
# zfs set sharenfs='rw=@123.123.0.0/16,root=neo' tank/home
If you are using DNS for host name resolution, specify the fully qualified hostname.
# zfs allow cindys create,destroy,mount,snapshot tank/cindys
# zfs allow tank/cindys
---- Permissions on tank/cindys --------------------------------------
Local+Descendent permissions:
user cindys create,destroy,mount,snapshot
Because the tank/cindys mount point permission is set to 755 by default, user cindys will be unable to mount file systems under tank/cindys. Add an ACE similar to the following syntax to provide mount point access:
# chmod A+user:cindys:add_subdirectory:allow /tank/cindys
# zfs allow staff create,mount tank/users
# zfs allow -c destroy tank/users
# zfs allow tank/users
---- Permissions on tank/users ---------------------------------------
Permission sets:
destroy
Local+Descendent permissions:
group staff create,mount
# zfs allow -s @pset create,destroy,snapshot,mount tank/users
# zfs allow staff @pset tank/users
# zfs allow tank/users
---- Permissions on tank/users ---------------------------------------
Permission sets:
@pset create,destroy,mount,snapshot
Local+Descendent permissions:
group staff @pset
# zfs allow cindys quota,reservation users/home
# zfs allow users/home
---- Permissions on users/home ---------------------------------------
Local+Descendent permissions:
user cindys quota,reservation
cindys% zfs set quota=10G users/home/marks
cindys% zfs get quota users/home/marks
NAME PROPERTY VALUE SOURCE
users/home/marks quota 10G local
# zfs unallow staff snapshot tank/users
# zfs allow tank/users
---- Permissions on tank/users ---------------------------------------
Permission sets:
@pset create,destroy,mount,snapshot
Local+Descendent permissions:
group staff @pset
# zfs diff -F tank/test@before tank/test M / /tank/test/ M F /tank/test/linked (+1) R F /tank/test/oldname -> /tank/test/newname - F /tank/test/deleted + F /tank/test/created M F /tank/test/modified
| June 8, 2015 | illumos |