Re: tgt rbd

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On 11/06/2014 06:37 AM, Gagandeep Arora wrote:
> Hello,
> 
> I am running ceph firefly with the cluster name cephprod and trying to
> create a lun with the following options:
> tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1
> --backing-store iscsi-spin/test-dr --bstype rbd
> --bsopts="conf=/etc/ceph/cephprod.conf"
> 
> but it fails with the error. The log message is:
> 
> tgtd: tgt_device_create(626) bsopts=conf=/etc/ceph/cephprod.conf
> tgtd: bs_rbd_init(519) bs_rbd_init bsopts: "conf=/etc/ceph/cephprod.conf"
> tgtd: bs_rbd_init(540) bs_rbd_init: confname /etc/ceph/cephprod.conf
> tgtd: bs_rbd_init(542) bs_rbd_init bsopts=
> tgtd: bs_rbd_init(565) bs_rbd_init: rados_connect: -2
> 
> 
> I believe it needs a cluster name so I also tried with the option
> clusterprod:
> tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1
> --backing-store iscsi-spin/test-dr --bstype rbd
> --bsopts="conf=/etc/ceph/prod.conf;cluster=prod" it fails with the
> following message:
> tgtd: mtask_execute(501) 211 1 2 0 1 0 1
> path=iscsi-spin/gpsfile-dr,bstype=rbd,bsopts=conf=/etc/ceph/cephprod.conf;cluster=cephprod
> 12866
> tgtd: device_mgmt(246) sz:91
> params:path=iscsi-spin/gpsfile-dr,bstype=rbd,bsopts=conf=/etc/ceph/cephprod.conf;cluster=cephprod
> tgtd: tgt_device_create(489) 1 1
> tgtd: tgt_device_create(626)
> bsopts=conf=/etc/ceph/cephprod.conf;cluster=cephprod
> tgtd: bs_rbd_init(519) bs_rbd_init bsopts:
> "conf=/etc/ceph/cephprod.conf;cluster=cephprod"
> tgtd: bs_rbd_init(531) bs_rbd: ignoring unknown option ""
> tgtd: bs_rbd_init(540) bs_rbd_init: confname /etc/ceph/cephprod.conf
> tgtd: bs_rbd_init(542) bs_rbd_init bsopts=;cluster=cephprod
> tgtd: bs_rbd_init(565) bs_rbd_init: rados_connect: -2
> 
> 
> Would some one know how to configure tgt with a cluster name other than
> "ceph"
> 

Looking at the code you need to supply a clientid as well.

See this: https://github.com/fujita/tgt/blob/master/usr/bs_rbd.c#L598

Wido

> 
> Regards,
> Gagan
> 
> 
> 
> _______________________________________________
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> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 


-- 
Wido den Hollander
42on B.V.
Ceph trainer and consultant

Phone: +31 (0)20 700 9902
Skype: contact42on
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