So much so that the 34-year-old - who made six GUINNESS PRO12 appearances last season - is keen to taste more action against Romania on Sunday.
"Mike (Ross) has been there for a long time, but my job is to push him and keep him honest. If something happens, then I want to be ready to take my chance if I get one," said White, who has seen international opportunities in the past halted by injury.
"There was almost a bit of relief. It was an amazing feeling standing there; Mick (Kearney), the manager just said 'right, you're on'. There was no waiting around, it was straight up: bib off and on (the pitch). I guess there was a lot of satisfaction for all the work over the years.
"It's great. Being able to play at a World Cup is fantastic. Mum and Dad are very proud about it all, playing at the highest level.
"There were some pretty dark moments there thinking 'is it worth it?' But sitting here now, it definitely is. It was great to stick at it and keep going."
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