Hi Jason,
Thanks for your prompt response
I have not been able to find a way to add an existing image ... it looks like I can just create new ones
Ill appreciate if you could provide details please
For example how would I add the preexisting image named image_ec1 ?
rados -p rbd ls | grep rbd_id
rbd_id.image01
rbd_id.image_ec1
rbd_id.vmware02
rbd_id.vmwware01
[root@osd01 ~]# gwcli
/disks> ls
o- disks .......................................................................................................... [200G, Disks: 2]
o- rbd.vmware02 ................................................................................................ [vmware02 (100G)]
o- rbd.vmwware01 .............................................................................................. [vmwware01 (100G)]
/disks> create pool=rbd image=image_ec1 size=120G
Failed : disk create/update failed on osd01. LUN allocation failure
/disks> exit
(LUN.allocate) rbd 'image_ec1' is not compatible with LIO
Only image features RBD_FEATURE_LAYERING,RBD_FEATURE_EXCLUSIVE_LOCK,RBD_FEATURE_OBJECT_MAP,RBD_FEATURE_FAST_DIFF,RBD_FEATURE_DEEP_FLATTEN are supported
2018-02-27 11:06:23,424 ERROR [rbd-target-api:731:_disk()] - LUN alloc problem - (LUN.allocate) rbd 'image_ec1' is not compatible with LIO
On 27 February 2018 at 10:52, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
Your image does not live in the EC pool -- instead, only the data
portion lives within the EC pool. Therefore, you would need to specify
the replicated pool where the image lives when attaching it as a
backing store for iSCSI (i.e. pre-create it via the rbd CLI):
# gwcli
/iscsi-target...sx01-657d71e0> cd /disks
/disks> create pool=rbd image=image_ec1 size=XYZ
> ______________________________
On Tue, Feb 27, 2018 at 10:42 AM, Steven Vacaroaia <stef97@xxxxxxxxx> wrote:
> Hi,
>
> I noticed it is possible to use erasure code pool for RBD and CEPHFS
>
> https://ceph.com/community/new-luminous-erasure-coding- rbd-cephfs/
>
> This got me thinking that I can deploy iSCSI luns on EC pools
> However it appears it is not working
>
> Anyone able to do that or have I misunderstood ?
>
> Thanks
> Steven
>
> Here is the pool
>
> ceph osd pool get ec_k4_m2 all
> size: 6
> min_size: 5
> crash_replay_interval: 0
> pg_num: 128
> pgp_num: 128
> crush_rule: ec_k4_m2
> hashpspool: true
> nodelete: false
> nopgchange: false
> nosizechange: false
> write_fadvise_dontneed: false
> noscrub: false
> nodeep-scrub: false
> use_gmt_hitset: 1
> auid: 0
> erasure_code_profile: EC_OSD
> fast_read: 0
>
>
> here is how I created an image just to make sure RBD is supported
> rbd create rbd/image_ec1 --size 51200 --data-pool ec_k4_m2 --image-feature
> layering
>
> here is what gwcli complains about
> gwcli
> /iscsi-target...sx01-657d71e0> cd /disks
> /disks> create pool=ec_k4_m2 image=testec size=120G
> Invalid pool (ec_k4_m2). Must already exist and be replicated
>
>
>
>
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>
--
Jason
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