OS-1566 dataset quota for ZFS datasets

*** 399,410 ****
  .sp
  .LP
  A dataset can also be delegated to a non-global zone by using the \fBzonecfg\fR
  \fBadd dataset\fR 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 \fBquota\fR
! property is controlled by the global administrator.
  .sp
  .LP
  A \fBZFS\fR volume can be added as a device to a non-global zone by using the
  \fBzonecfg\fR \fBadd device\fR subcommand. However, its physical properties can
  be modified only by the global administrator.
--- 399,411 ----
  .sp
  .LP
  A dataset can also be delegated to a non-global zone by using the \fBzonecfg\fR
  \fBadd dataset\fR 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 \fBquota\fR,
! \fBdataset_quota\fR and \fBsnapshot_quota\fR properties are controlled by the
! global administrator.
  .sp
  .LP
  A \fBZFS\fR volume can be added as a device to a non-global zone by using the
  \fBzonecfg\fR \fBadd device\fR subcommand. However, its physical properties can
  be modified only by the global administrator.
*** 944,953 ****
--- 945,969 ----
  .RE
  
  .sp
  .ne 2
  .na
+ \fB\fBdataset_quota\fR=\fIcount\fR | \fBnone\fR\fR
+ .ad
+ .sp .6
+ .RS 4n
+ Limits the number of datasets that can be created within a dataset and its
+ descendents. This property enforces a hard limit on the number of datasets
+ below the given dataset.  Setting a dataset_quota on a descendent of a dataset
+ that already has a dataset_quota does not override the ancestor's dataset_quota,
+ but rather imposes an additional limit. This feature must be enabled to be
+ used (see \fBzpool-features\fR(5)).
+ .RE
+ 
+ .sp
+ .ne 2
+ .na
  \fB\fBdevices\fR=\fBon\fR | \fBoff\fR\fR
  .ad
  .sp .6
  .RS 4n
  Controls whether device nodes can be opened on this file system. The default
*** 1029,1038 ****
--- 1045,1072 ----
  .RE
  
  .sp
  .ne 2
  .na
+ \fB\fBsnapshot_quota\fR=\fIcount\fR | \fBnone\fR\fR
+ .ad
+ .sp .6
+ .RS 4n
+ Limits the number of snapshots that can be created on a dataset and its
+ descendents. This property enforces a hard limit on the number of snapshots
+ below the given dataset.  Setting a snapshot_quota on a descendent of a dataset
+ that already has a snapshot_quota does not override the ancestor's
+ snapshot_quota, but rather imposes an additional limit. The quota is not
+ enforced for recursive snapshots taken from above the dataset with the quota,
+ but that snapshot will be counted against the quota if the dataset is
+ snapshotted directly.  This feature must be enabled to be used (see
+ \fBzpool-features\fR(5)).
+ .RE
+ 
+ .sp
+ .ne 2
+ .na
  \fB\fBuserquota@\fR\fIuser\fR=\fIsize\fR | \fBnone\fR\fR
  .ad
  .sp .6
  .RS 4n
  Limits the amount of space consumed by the specified user. User space
*** 3123,3132 ****
--- 3157,3167 ----
  canmount         property
  casesensitivity  property
  checksum         property
  compression      property
  copies           property
+ dataset_quota    property
  devices          property
  exec             property
  mountpoint       property
  nbmand           property
  normalization    property
*** 3141,3150 ****
--- 3176,3186 ----
  setuid           property
  shareiscsi       property
  sharenfs         property
  sharesmb         property
  snapdir          property
+ snapshot_quota   property
  utf8only         property
  version          property
  volblocksize     property
  volsize          property
  vscan            property