The default format of rbd image in jewel is 2 along with bunch of other 
deatures enabled , so, you have following two option:

1. create a format 1 image -image-format 1

2. Or, do this in the ceph.conf file [client] or [global] before creating 
image..
rbd_default_features = 3

Thanks & Regards
Somnath

From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of EP 
Komarla
Sent: Tuesday, August 16, 2016 2:52 PM
To: ceph-users@lists.ceph.com
Subject: [ceph-users] Rbd map command doesn't work

All,

I am creating an image and mapping it.  The below commands used to work in 
Hammer, now the same is not working in Jewel.  I see the message about some 
feature set mismatch - what features are we talking about here?  Is this a 
known issue in Jewel with a workaround?

Thanks,

- epk

=========


[test@ep-c2-client-01 ~]$  rbd create rbd/test1 --size 1G
[test@ep-c2-client-01 ~]$ rbd info test1
rbd image 'test1':
        size 1024 MB in 256 objects
        order 22 (4096 kB objects)
        block_name_prefix: rbd_data.8146238e1f29
        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
        flags:
[test@ep-c2-client-01 ~]$ rbd map rbd/test1
rbd: sysfs write failed
In some cases useful info is found in syslog - try "dmesg | tail" or so.
rbd: map failed: (13) Permission denied
[test@ep-c2-client-01 ~]$ dmesg|tail
[1197731.547522] libceph: mon1 172.20.60.52:6789 feature set mismatch, my 
102b84a842a42 < server's 40102b84a842a42, missing 400000000000000
[1197731.554621] libceph: mon1 172.20.60.52:6789 missing required protocol 
features
[1197741.571645] libceph: mon2 172.20.60.53:6789 feature set mismatch, my 
102b84a842a42 < server's 40102b84a842a42, missing 400000000000000
[1197741.578760] libceph: mon2 172.20.60.53:6789 missing required protocol 
features
[1198586.766120] libceph: mon1 172.20.60.52:6789 feature set mismatch, my 
102b84a842a42 < server's 40102b84a842a42, missing 400000000000000
[1198586.771248] libceph: mon1 172.20.60.52:6789 missing required protocol 
features
[1198596.789453] libceph: mon0 172.20.60.51:6789 feature set mismatch, my 
102b84a842a42 < server's 40102b84a842a42, missing 400000000000000
[1198596.796557] libceph: mon0 172.20.60.51:6789 missing required protocol 
features
[1198606.813825] libceph: mon1 172.20.60.52:6789 feature set mismatch, my 
102b84a842a42 < server's 40102b84a842a42, missing 400000000000000
[1198606.820929] libceph: mon1 172.20.60.52:6789 missing required protocol 
features
[test@ep-c2-client-01 ~]$ sudo rbd map rbd/test1


EP KOMARLA,
[Flex_RGB_Sml_tm]
Emal: ep.koma...@flextronics.com<mailto:ep.koma...@flextronics.com>
Address: 677 Gibraltor Ct, Building #2, Milpitas, CA 94035, USA
Phone: 408-674-6090 (mobile)


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