illumos gate

In a recent discussion on illumos-discuss it became visible, that refquota is not receivable via zfs send/receive. It would be nice to have a note added to the docs about that at least so people are aware that this property must be excluded from replication for it to succeed.

Test case scenario
Refquota starts of as 1M

# zfs snap rpool1/testing@2
# zfs send -p -I @1 rpool1/testing@2 | zfs recv -F rpool1/testing2
# zfs set refquota=2M rpool1/testing
# dd if=/dev/random of=/rpool1/testing/data.random bs=1m count=2
# zfs send -p -I @2 rpool1/testing@3 | zfs recv -F rpool1/testing2
cannot send rpool1/testing@3: snapshot rpool1/testing@3 does not exist
cannot receive: failed to read from stream
# zfs snap rpool1/testing@3
# zfs send -p -I @2 rpool1/testing@3 | zfs recv -F rpool1/testing2
cannot receive refquota property on rpool1/testing2: size is less than current used or reserved space
#
# zfs get refquota rpool1/testing2
NAME             PROPERTY  VALUE     SOURCE
rpool1/testing2  refquota  1M        received
# zfs get refquota rpool1/testing
NAME            PROPERTY  VALUE     SOURCE
rpool1/testing  refquota  2M        local

# ls -alh /rpool1/testing2/data.random
-rw-r--r--   1 root     root       1.88M Apr 26 18:56 /rpool1/testing2/data.random
# ls -alh /rpool1/testing/data.random 
-rw-r--r--   1 root     root       1.88M Apr 26 18:56 /rpool1/testing/data.random