Great!
You are marvelos ceph expert !
I did
[ceph@ceph-client ~]$ rbd feature disable mycephrbd
deep-flatten,fast-diff,object-map,exclusive-lock
[ceph@ceph-client ~]$ sudo rbd map rbd/mycephrbd --id admin --keyfile
/etc/ceph/admin.key
/dev/rbd0
Also I added the recommended line in client ceph.conf.
On Thu, May 12, 2016 at 5:47 PM, Ilya Dryomov <idryomov@xxxxxxxxx> wrote:
> On Thu, May 12, 2016 at 4:37 PM, Andrey Shevel <shevel.andrey@xxxxxxxxx> wrote:
>> Thanks a lot.
>>
>> I tried
>>
>> [ceph@ceph-client ~]$ ceph osd crush tunables hammer.
>>
>> Now I have
>>
>>
>> [ceph@ceph-client ~]$ ceph osd crush show-tunables
>> {
>> "choose_local_tries": 0,
>> "choose_local_fallback_tries": 0,
>> "choose_total_tries": 50,
>> "chooseleaf_descend_once": 1,
>> "chooseleaf_vary_r": 1,
>> "chooseleaf_stable": 0,
>> "straw_calc_version": 1,
>> "allowed_bucket_algs": 54,
>> "profile": "hammer",
>> "optimal_tunables": 0,
>> "legacy_tunables": 0,
>> "minimum_required_version": "firefly",
>> "require_feature_tunables": 1,
>> "require_feature_tunables2": 1,
>> "has_v2_rules": 0,
>> "require_feature_tunables3": 1,
>> "has_v3_rules": 0,
>> "has_v4_buckets": 0,
>> "require_feature_tunables5": 0,
>> "has_v5_rules": 0
>> }
>>
>>
>>
>> and the mount command for cephfs does work now fine
>>
>> sudo mount -t ceph 10.10.1.11:6789:/ /mnt/mycephfs -o
>> name=admin,secretfile=/etc/ceph/admin.key
>>
>> [ceph@ceph-client ~]$ mount | grep ceph
>> 10.10.1.11:6789:/ on /mnt/mycephfs type ceph
>> (rw,relatime,name=admin,secret=<hidden>)
>>
>> It was NOT working before!
>>
>>
>> However, still :-(
>>
>> [ceph@ceph-client ~]$ sudo rbd map rbd/mycephrbd --id admin --keyfile
>> /etc/ceph/admin.key
>> rbd: sysfs write failed
>> rbd: map failed: (6) No such device or address
>
> Do
>
> $ rbd feature disable mycephrbd
> deep-flatten,fast-diff,object-map,exclusive-lock
>
> to disable features unsupported by the kernel client. If you are using the
> kernel client, you should create your images with
>
> $ rbd create --size <size> --image-feature layering <image-name>
>
> or add
>
> rbd default features = 3
>
> to ceph.conf on the client side. (Setting rbd default features on the
> OSDs will have no effect.)
>
> Thanks,
>
> Ilya
--
Andrey Y Shevel
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