Hello,
I'm setting up an FC target configuration, everything ok except that the
# ctladm realsync off
command returns the help screen, it seems that the "realsync" option is missing.
The Freenas release is the Latest 9.10-STABLE.
Kind regards
`ctladm realsync` option was removed at some point of FreeNAS 9.3. It was not really needed and just duplicated zvol sync property that should be used instead.