note our naive wiper for ssds

tsa/howto/retire-a-host.md

@@ -112,7 +112,9 @@ commandline version [does not provide](https://github.com/martijnvanbrummelen/nw
 
 WARNING: this procedure doesn't cover the case where the disk is an
 SSD. See [this paper](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.3062&rep=rep1&type=pdf) for details on how classic data scrubbing
-software might not work for SSDs.
+software might not work for SSDs. For now we use this:
+
+    nwipe --autonuke --method=random --rounds=2 /dev/nvme1n1
 
 When you return: