Hi David,

I've never looked at the ghazal form but this is what Norm says about them.

In its form, the ghazal is a short poem rarely of more than a dozen couplets It always opens with a rhyming couplet called matla. The rhyme of the opening couplet is repeated at the end of second line in each succeeding verse, so that the rhyming pattern may be represented as AA, BA, CA, DA, and so on.
In addition, to the restriction of rhyme, the ghazal also observes a conventional radif. Radif demands that a portion of the first line, comprising not more than two or three words, immediately preceding the rhyme-word at the end, should rhyme with its counterpart in the second line of the opening couplet, and afterwards alternately throughout the poem.

Many modern ghazal writers do not adhere to any rhyme conventions.

There are plenty of sites about the Ghazal --- this may interest you:
The Ghazal Page


Two examples, one my me and one by John Drury:


Ghazal - Love Has Received Us

The birds from their nests once perceived us
As leaving our own nests mischievous

The scene that was painted off canvas
Well, can bread crumbs be left to deceive us

We've been bound by colors not thought of
We ought to use wings that conceived us.

The palette that held all the answers
The sands and the piper believed us

The doves in a fly-by bear witness
And with brush strokes love has received us.

If modern ghazals adhere to no rhyme scheme, I guess you're fine calling this one.