Hi, all!
I use rbd to do something and find below issue:
when i create a rbd image with feature:
layering,exclusive-lock,object-map,fast-diff
failed to map:
rbd: sysfs write failed
RBD image feature set mismatch. Try disabling features unsupported by the kernel with "rbd feature disable".
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: (6) No such device or address
RBD image feature set mismatch. Try disabling features unsupported by the kernel with "rbd feature disable".
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: (6) No such device or address
dmesg | tail:
[960284.869596] rbd: rbd0: capacity 107374182400 features 0x5
[960310.908615] libceph: mon1 10.0.10.12:6789 session established
[960310.908916] libceph: client21459 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960310.911729] rbd: image foo: image uses unsupported features: 0x18
[960337.946856] libceph: mon1 10.0.10.12:6789 session established
[960337.947320] libceph: client21465 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960337.950116] rbd: image foo: image uses unsupported features: 0x8
[960346.248676] libceph: mon0 10.0.10.11:6789 session established
[960346.249077] libceph: client21866 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960346.254145] rbd: rbd0: capacity 107374182400 features 0x5
[960310.908615] libceph: mon1 10.0.10.12:6789 session established
[960310.908916] libceph: client21459 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960310.911729] rbd: image foo: image uses unsupported features: 0x18
[960337.946856] libceph: mon1 10.0.10.12:6789 session established
[960337.947320] libceph: client21465 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960337.950116] rbd: image foo: image uses unsupported features: 0x8
[960346.248676] libceph: mon0 10.0.10.11:6789 session established
[960346.249077] libceph: client21866 fsid fe308030-ae94-471a-8d52-2c12151262fc
[960346.254145] rbd: rbd0: capacity 107374182400 features 0x5
If i just create layering image, map is ok.
*The question is here:*
Then i enable feature:
exclusive-lock,object-map,fast-diff
It works.
And rbd info shows all feature i set.
I think it is a bug:
why create with those feature then map failed but map after create is ok?
I think it is more than order question.
My OS is CentOS Linux release 7.4.1708 (Core), kernel is 3.10.0-693.el7.x86_64.
Ceph version is 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
Thanks
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