Visitor record was cancelled

[canuck_in_uk]

It shows "V-1" category on my Canada visa. Officers didn't stamp on my passport when I arrived in Canada.

I don't think stamp really matters, but the date of arrival should be recorded in system when I landed at the airport. Generally departure should be within 6 months after arriving, isn't it

As I said, entirely irrelevant what your TRV says. Also irrelevant whether you got a stamp or not upon entry.