Index: share/doc/pjdfstest/README
===================================================================
--- share/doc/pjdfstest/README
+++ share/doc/pjdfstest/README
@@ -23,14 +23,8 @@
     2. cd to the tests directory:
        % cd /usr/tests/sys/pjdfstest
     3. Run kyua:
-       % env PJDFSTEST_TEST_PATH=/mnt kyua test
+       % env TMPDIR=/mnt kyua test
 
-   WARNING: the above method violates the test program isolation algorithm
-   described in kyua(1); as such, $PJDFSTEST_TEST_PATH must be cleaned up after
-   executing the testcases.
-
-   It's highly recommended that $PJDFSTEST_TEST_PATH be pointed to a sandboxed
-   filesystem, e.g. a small UFS-formatted memory disk or ZFS dataset with
-   quotas enabled, so the filesystem can be easily destroyed after the test
-   execution is complete, and the testcases are properly bounded both in terms
-   of time and space.
+   Note that if HOME is undefined, this will result in kyua's logfile being
+   placed in TMPDIR, which may not be what you want.  You can always use
+   --logfile to explicitly select the log location.