OS-1566 dataset quota for ZFS datasets

@@ -399,12 +399,13 @@
 .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.
+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.

@@ -944,10 +945,25 @@
 .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

@@ -1029,10 +1045,28 @@
 .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

@@ -3123,10 +3157,11 @@
 canmount         property
 casesensitivity  property
 checksum         property
 compression      property
 copies           property
+dataset_quota    property
 devices          property
 exec             property
 mountpoint       property
 nbmand           property
 normalization    property

@@ -3141,10 +3176,11 @@
 setuid           property
 shareiscsi       property
 sharenfs         property
 sharesmb         property
 snapdir          property
+snapshot_quota   property
 utf8only         property
 version          property
 volblocksize     property
 volsize          property
 vscan            property