Built a clean copy of 2.4.1 and ran smoke tests using the following:

> python buildscripts/smoke.py --smoke-db-prefix ~/Work/workspace --small-oplog all 2>&1

• perftest is using /data/db/unittest
• other tests use /tmp/unittest

Seems that if you set --smoke-db-prefix then all tests should honor that (to ease managing permissions, filesystems, etc.)