Incorrect parsing of ceph status (changed format between versions)

Turns out the output of ceph status changed a bit:

2013-03-11 19:07:49,461 INFO [MainThread] andreas In _get_ceph_usage, _get_ceph_command_output is health HEALTH_OK
2013-03-11 19:07:49,461 INFO [MainThread] andreas Got pg_line = ['pgmap', 'v193420:', '208', 'pgs:', '208', 'active+clean;', '5514', 'MB', 'data,', '18267', 'MB', 'used,', '43139', 'MB', '/', '61406', 'MB', 'avail;', '134KB/s', 'wr,', '24op/s']
2013-03-11 19:07:49,462 INFO [MainThread] andreas set total to 134KB/s
2013-03-11 19:07:49,462 INFO [MainThread] andreas set available to 61406
2013-03-11 19:08:09,408 INFO [MainThread] andreas in exchange()

Total having "KB/s" breaks int():
manager/cephusage.py _get_ceph_usage():
...
        total = pg_line[-3] # Total space
...
        filled = int(total) - int(available)

Unfortunately the backtrace is swallowed by something.

This is the current output of ceph status:

root@inst-007:~# ceph status
   health HEALTH_OK
   monmap e2: 3 mons at {inst-007=192.168.64.139:6789/0,inst-008=192.168.64.140:6789/0,inst-009=192.168.64.141:6789/0}, election epoch 6, quorum 0,1,2 inst-007,inst-008,inst-009
   osdmap e28: 3 osds: 3 up, 3 in
    pgmap v193861: 208 pgs: 208 active+clean; 5514 MB data, 18267 MB used, 43139 MB / 61406 MB avail; 1739KB/s wr, 54op/s
   mdsmap e1: 0/0/1 up

root@inst-007:~#

This is version 0.56.3-0ubuntu2~cloud0