illumos gate

This is a request to add zfs receive property support (zfs recv -o) to Illumos. Solaris 11 added this feature after they killed opensolaris. It allows a user to specify zfs receive -o property=value to override properties when receiving a stream. The received stream is treated as though the overridden property was part of the source stream. The -o flag may be specified multiple times to set/override multiple properties.

This is incredibly useful when using zfs send/recv for periodic backup/replication. It allows a user to change properties such as canmount, mountpoint, or compression without modifying the source dataset.

Using inheritance on a destination dataset can achieve something similar. However, this is a bit fragile and limited in capability. Furthermore, it doesn't work for non-inheritable properties such as canmount.