Former West Indies bowling great Courtney Walsh has admitted to mixed emotions as his countrymen were routed by Bangladesh.

Bangladesh swept the series 2-0, with the second Test wrapping up Sunday inside three days as the home side recorded their first-ever victory by an innings margin.

Walsh, a Jamaican legend who took 519 Test wickets for the West Indies, is now fast-bowling coach for Bangladesh, and said the thumping was bittersweet.

"I might say that I am disappointed with probably how things have unfolded, but I am very happy to be involved with Bangladesh," Walsh told reporters in Dhaka.

"We are in a winning situation, so my pride is intact. As a West Indian, you are going to be disappointed in the performance."

Walsh's part in the second Test win was somewhat diminished as Bangladesh did not field a single fast bowler.

Their lone fast bowler in the first Test, Mustafizur Rahman, bowled just four overs in that match, as the spinners continued to dominate.

Shakib Al Hasan, Mehidy Hasan, Taijul Islam and Nayeem Hasan accounted for all 40 wickets, a record for a Test series in Bangladesh.

Despite the spinners' dominance, Walsh insisted Bangladesh's fast bowlers had more to give.

"Tactically, we wanted to play more spinners to win a Test and the series. It was achieved," he said.

"Hopefully when we go to New Zealand, the seamers might get a better opportunity. We might get different types of wicket, and they should want to grab those opportunities as well."