Hi Guys,
So, new issue (I'm gonna get the hang of this if it kills me :-) ).
I have a working/healthy Ceph (Octopus) Cluster (with qemu-img, libvert,
etc, installed), and an erasure-coded pool called "my_pool". I now need
to create a "my_data" image within the "my_pool" pool. As this is for a
KVM host / block device (hence the qemu-img et.al.) I'm attempting to
use qemu-img, so the command I am using is:
```
qemu-img create -f rbd rbd:my_pool/my_data 1T
```
The error message I received was:
```
qemu-img: rbd:my_pool/my_data: error rbd create: Operation not supported
```
So, I tried the 'raw' rbd command:
```
rbd create -s 1T my_pool/my_data
```
and got the error:
```
_add_image_to_directory: error adding image to directory: (95) Operation
not supported
rbd: create error: (95) Operation not supported
```
So I don't believe the issue is with the 'qemu-img' command - but I may
be wrong.
After doing some research I *think* I need to specify a replicated (as
opposed to erasure-coded) pool for my_pool's metadata (eg
'my_pool_metadata'), and thus use the command:
```
rbd create -s 1T --data-pool my_pool my_pool_metadata/my_data
```
First Question: Is this correct?
Second Question: What is the qemu-img equivalent command - is it:
```
qemu-img create -f rbd rbd:--data-pool my_pool my_pool_metadata/my_data 1T
```
or something similar?
Thanks in advance
Dulux-Oz
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