I woke up this morning in Figueres to an email from RENFE informing me that my train for tomorrow, Mon. Nov 7th was cancelled due to a strike. I was just barely able to rebook the one train that was running, but only by upgrading to first class.
I just looked at the trains from Santiago to Madrid on the 7th And the 11th it appears that at least three trains (06:25, 12:00, 17:50) may be affected. If you are traveling these two days you should confirm your train as soon as possible. If you have not already bought a ticket for this week you should consider buying it as soon as possible as some trains are already sold out.
fortunately I bought my ticket through my RENFE account so they had an email where they could contact me.