feature set mismatch

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Hi,
i can't mount.ceph:
mount.ceph bd-0:/ /mnt/myceph -v -o name=admin,secretfile=/etc/ceph/admin.secret
parsing options: name=admin,secretfile=/etc/ceph/admin.secret
mount error 5 = Input/output error

ceph -s  is OK,

When i look at /var/log/syslog, i can see:
Jan 29 12:22:06 bd-0 kernel: [10333.825859] libceph: mon0 xxx.xxx.xxx.xxx:6789 feature set mismatch, my 4a042aca < server's 104a042aca, missing 1000000000
Jan 29 12:22:06 bd-0 kernel: [10333.827302] libceph: mon0 xxx.xxx.xxx.xxx:6789 socket error on read

So i seems, that a feature should be disabled. I think it is Crush V2.

What should i do ?

Server and Client are Ubuntu 13.04, Kernel 3.12.6.  I also tried 3.13 but without success.
This is ceph 0.75
-- 
MfG,
  Markus Goldberg

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Markus Goldberg       Universität Hildesheim
                      Rechenzentrum
Tel +49 5121 88392822 Marienburger Platz 22, D-31141 Hildesheim, Germany
Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx
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