Re: RBD with iSCSI

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On Wed, Sep 9, 2015 at 8:13 AM, Daleep Bais <daleepbais@xxxxxxxxx> wrote:
Hi,

I am following steps from URL http://www.sebastien-han.fr/blog/2014/07/07/start-with-the-rbd-support-for-tgt/   to create a RBD pool  and share to another initiator.

I am not able to get rbd in the backstore list. Please suggest.

below is the output of tgtadm command:

tgtadm --lld iscsi --op show --mode system           
System:
    State: ready
    debug: off
LLDs:
    iscsi: ready
    iser: error
Backing stores:
    sheepdog
    bsg
    sg
    null
    ssc
    smc (bsoflags sync:direct)
    mmc (bsoflags sync:direct)
    rdwr (bsoflags sync:direct)
Device types:
    disk
    cd/dvd
    osd
    controller
    changer
    tape
    passthrough
iSNS:
    iSNS=Off
    iSNSServerIP=
    iSNSServerPort=3205
    iSNSAccessControl=Off


I have installed tgt and tgt-rbd packages till now. Working on Debian GNU/Linux 8.1 (jessie)

Thanks.

Daleep Singh Bais

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Hey Daleep,

The tgt you have installed does not support Ceph rbd.  See the output from my system using a more recent tgt that supports rbd.

tgtadm --lld iscsi --mode system --op show
System:
    State: ready
    debug: off
LLDs:
    iscsi: ready
    iser: error
Backing stores:
    rbd (bsoflags sync:direct)
    sheepdog
    bsg
    sg
    null
    ssc
    rdwr (bsoflags sync:direct)
Device types:
    disk
    cd/dvd
    osd
    controller
    changer
    tape
    passthrough
iSNS:
    iSNS=Off
    iSNSServerIP=
    iSNSServerPort=3205
    iSNSAccessControl=Off


You will need a new version of tgt.  I think the earliest version that supports rbd is 1.0.42

https://github.com/fujita/tgt


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