[ovirt-users] Is it possible to add ISCSI over iser?

[Trey Dockendorf]

Arman,

One of my storage domains is iSCSI using iSER.  You need the following
in vdsm.conf:

[irs]
iscsi_default_ifaces = iser,default

I believe the proper way to set that so it's preserved during node
updates is the following

# cat /etc/ovirt-host-deploy.conf.d/40-custom-vdsm-config.conf
[environment:enforce]
VDSM_CONFIG/irs/iscsi_default_ifaces=str:iser,default

The filename I believe can be changed, just requires .conf extension

Once VDSM is configured to use iser you can add the domain in the GUI
using the IPoIB IP address to initiate iSER.

ovirtnode01 # iscsiadm -m session
iser: [3] 192.168.211.245:3260,1 iqn.2014-04.DOMAIN.vmstore1:ovirt-data_iscsi

- Trey

On Wed, Sep 24, 2014 at 6:42 AM, Arman Khalatyan <arm2arm at gmail.com> wrote:
> Hi,
> I am trying to attach my new storage domain over iser.
> My server always gets that request is tcp/ip not rdma.
> Simple work around is login from hosts over iser.
> Would be good to add a possibility to select the protocol of
> iscsi:tcp/iser/srp.
>
> Thanks,
> Arman
>
> PS
> for those who was struggling with same trouble:
> 1) on hosts:
> add lines in /etc/rdma/rdma.conf
> # Load iSER module
> ISER_LOAD=YES
> 2) service rdma restart (or modprobe ib_iser
> 3) iscsiadm -m discovery -t st -p 10.10.10.31 -I iser
> 4) iscsiadm -m node --login
>
> 5) check if disks are there
> iscsiadm -m session -o show
> lssci
> [1228:0:0:0] storage IET      Controller       0001  -
> [1228:0:0:1] disk    IET      VIRTUAL-DISK     0001  /dev/sde
>  lsblk /dev/sde
> NAME                                                         MAJ:MIN RM
> SIZE RO TYPE  MOUNTPOINT
> sde                                                            8:64   0
> 36.4T  0 disk
> ââ100090001 (dm-8)                                           253:8    0
> 36.4T  0 mpath
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-metadata (dm-9) 253:9    0
> 512M  0 lvm
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-ids (dm-10)     253:10   0
> 128M  0 lvm
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-leases (dm-11)  253:11   0
> 2G  0 lvm
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-outbox (dm-12)  253:12   0
> 128M  0 lvm
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-inbox (dm-13)   253:13   0
> 128M  0 lvm
>   ââ18b70b0d--4944--4c73--970d--87a1af353b9f-master (dm-14)  253:14   0
> 1G  0 lvm
>
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