Comment 4 for bug 1682402

Some additional info:

- a short self-test of the SSD has already completed without errors

- there was barely any memory usage while the bug occured, so it shouldn't be an out of memory issue

- iotop shows always ~5 seconds of 99% I/O usage of the "cp" command at the top with nothing notable else going on, then ~8 seconds of ~50% usage of the "dmcrypt_write" command at the top with nothing else notable going on. This might be normal, I just mentioned it because the weird switching back and forth between those two looked a bit odd