Re: iSER Connection via LIO not working

["Thomas Rosenstein" <thomas.rosenstein@xxxxxxxxxxxxxxxx>]

Okay, just did that:

printk(KERN_WARNING PFX "Debug pool %d - %d\n", list_len, 
pool->max_pages);

result is:

fmr_pool: Debug pool 1 - 0

means that the max_pages is set to 0


any idea how why and how to solve that?

> On 7 Jun 2017, at 21:05, Robert LeBlanc wrote:
>
> > On Wed, Jun 7, 2017 at 12:46 PM, Thomas Rosenstein
> > <thomas.rosenstein@xxxxxxxxxxxxxxxx> wrote:
> > > Hi,
> > >
> > > lio config (extract - .json file attached)
> > >
> > > o- iscsi
> > > ...........................................................................................
> > > [1-way disc auth, Targets: 1]
> > >   | o- iqn.2017-01.at.cf-it.at-storage-01
> > > ................................................................................
> > > [TPGs: 1]
> > >   |   o- tpg1
> > > ..........................................................................................
> > > [no-gen-acls, auth per-acl]
> > >   |     o- acls
> > > ..........................................................................................................
> > > [ACLs: 1]
> > >   |     | o- iqn.2017-01.at.cf-it.kubernetes.db-1
> > > ..................................................... [1-way auth, 
> > > Mapped
> > > LUNs: 1]
> > >   |     |   o- mapped_lun0
> > > ...................................................................... 
> > > [lun0
> > > fileio/kubernetes_db_1 (rw)]
> > >   |     o- luns
> > > ..........................................................................................................
> > > [LUNs: 1]
> > >   |     | o- lun0 ..........................................
> > > [fileio/kubernetes_db_1 
> > > (/data/kubernetes_storage/kubernetes_db_1.img)]
> > >   |     o- portals
> > > ....................................................................................................
> > > [Portals: 1]
> > >   |       o- 0.0.0.0:3260
> > > ...................................................................................................
> > > [iser]
> > >
> > > at-storage-01 modules:
> > >
> > > ib_isert               49152  4
> > > iscsi_target_mod      294912  8 ib_isert
> > > ib_iser                49152  0
> > > libiscsi               57344  1 ib_iser
> > > scsi_transport_iscsi    98304  2 ib_iser,libiscsi
> > > target_core_mod       352256  43
> > > iscsi_target_mod,ib_isert,target_core_iblock,ib_srpt,target_core_user,target_core_file,target_core_pscsi
> > > rdma_cm                53248  4 ib_iser,ib_isert,rpcrdma,rdma_ucm
> > > ib_core               208896  15
> > > ib_iser,ib_cm,rdma_cm,ib_umad,ib_srp,ib_isert,ib_uverbs,rpcrdma,ib_ipoib,iw_cm,ib_srpt,ib_ucm,rdmavt,ib_qib,rdma_ucm
> > >
> > > at-host-18 modules:
> > >
> > > ib_isert               49152  0
> > > iscsi_target_mod      299008  1 ib_isert
> > > ib_iser                49152  0
> > > libiscsi               57344  1 ib_iser
> > > scsi_transport_iscsi    98304  3 ib_iser,libiscsi
> > > target_core_mod       352256  3 iscsi_target_mod,ib_isert,ib_srpt
> > > rdma_cm                53248  4 ib_iser,ib_isert,rpcrdma,rdma_ucm
> > > ib_core               208896  15
> > > ib_iser,ib_cm,rdma_cm,ib_umad,ib_srp,ib_isert,ib_uverbs,rpcrdma,ib_ipoib,iw_cm,ib_srpt,ib_ucm,rdmavt,ib_qib,rdma_ucm
> > >
> > >
> > > Commands to initialize iscsiadm:
> > >
> > > iscsiadm -m discovery -t st -p 10.0.13.3:3260 -I iser
> > >
> > > iscsiadm -m node -P 1
> > > Target: iqn.2017-01.at.cf-it.at-storage-01
> > >         Portal: 10.0.13.3:3260,1
> > >                 Iface Name: iser
> > >
> > > iscsiadm -m node -l
> > >
> > > ->> creates the logs
> > >
> > >
> > > @deleted and recreated, multiple times
> > > ib_isert and ib_iser are loaded on both servers
> > >
> > > BR
> > > Thomas
> >
> > The config looks good to me. I did have a similar problem with a RoCE
> > card where I could not get iSER working although RDMA did work.
> > Looking at the code, it seems that maybe the QLogic driver is not
> > properly allocating some memory that iSER is trying to use. I'm not 
> > an
> > expert in this so I could be completely off base here, just trying to
> > help out.
> >
> > If you are adventerious, you can add some print statements in
> > drivers/infiniband/core/fmr_pool.c in the ib_fmr_pool_map_phys
> > function to see what may be going on. I think you are hitting this
> > line:
> >
> >         if (list_len < 1 || list_len > pool->max_pages)
> >                 return ERR_PTR(-EINVAL);
> >
> > I would check the values of list_len and pool->max_pages before that.
> >
> > ----------------
> > Robert LeBlanc
> > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904  C70E E654 3BB2 FA62 B9F1
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