On Wed, Jan 29, 2014 at 1:58 PM, Markus Goldberg
<goldberg@xxxxxxxxxxxxxxxxx> wrote:
> 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
Yes, it's CRUSH_V2. 0.75 is a development release, so you should
either go back to Emperor (0.72) or use (with caution!) a development
kernel. Support for CRUSH_V2 will be in 3.14 and is in mainline as of
yesterday, however I wouldn't advise running a pre-rc1 kernel.
Instead, you can grab a master branch of ceph-client.git - it has
CRUSH_V2 bits and is based on 3.13-rc3. (I think it can be safely
rebased onto 3.13 final too.)
Thanks,
Ilya
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