crushmap errors

[Martin Mailand <martin@tuxadero.com>]

Hi,
I used in ceph v0.38 the host and rack feature in the conf during an 
mkcephfs. Now I have to problems with the crushmap

1. I cannot compile a ceph genearated crushmap.
crushtool -c file.txt -o file
file.txt:4 error: parse error at '.0'

# begin crush map

# devices
device 0 osd.0


2. Why are 2 racks are not enough for 2 failure domains?
 From the commit:
If there are >2 racks, separate across racks.

and in the src/osd/OSDMap.cc

    if (racks.size() > 3) {
       // spread replicas across hosts
       crush_rule_set_step(rule, 1, CRUSH_RULE_CHOOSE_LEAF_FIRSTN, 
CRUSH_CHOOSE_N, 2);

shouldn't that be

    if (racks.size() > 1) {
       // spread replicas across racks
       crush_rule_set_step(rule, 1, CRUSH_RULE_CHOOSE_LEAF_FIRSTN, 
CRUSH_CHOOSE_N, 2);

Best Regards,
  martin