[Scst-devel] Errors on SRP

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Hi all, I am trying to use scst on 2.6.37-rc

It's also one of the first times I use scst it so please forgive if I do 
trivial mistakes.
I am trying to use it with srp - infiniband

I hope I set up server side configuration correctly.

When I boot the initiator machine this dmesg comes out:
[  145.690456] scsi host2: ib_srp: new target: id_ext 003048c6a6560000 
ioc_guid 003048c6a6560000 pkey ffff service_id 003048c6a6560000 dgid 
fe80:0000:0000:0000:0030:48c6:a656:0001
[  145.692710] scsi2 : SRP.T10:003048C6A6560000
[  145.692997] scsi scan: INQUIRY result too short (5), using 36
[  145.693121] scsi scan: INQUIRY result too short (5), using 36

If I try to do echo "- - -" > scan on the scsi_host for srp (or is that 
"iscsi"? I have some confusion) this comes out:

[  193.710200] scsi scan: INQUIRY result too short (5), using 36
[  193.710299] scsi scan: INQUIRY result too short (5), using 36
[  193.710384] scsi scan: INQUIRY result too short (5), using 36
[  193.710462] scsi scan: INQUIRY result too short (5), using 36
[  193.710542] scsi scan: INQUIRY result too short (5), using 36
[  193.710613] scsi scan: INQUIRY result too short (5), using 36
[  193.710688] scsi scan: INQUIRY result too short (5), using 36
[  193.710760] scsi scan: INQUIRY result too short (5), using 36
[  193.710834] scsi scan: INQUIRY result too short (5), using 36
[  193.710903] scsi scan: INQUIRY result too short (5), using 36
[  193.710976] scsi scan: INQUIRY result too short (5), using 36
[  193.711045] scsi scan: INQUIRY result too short (5), using 36
[  193.711117] scsi scan: INQUIRY result too short (5), using 36
[  193.711192] scsi scan: INQUIRY result too short (5), using 36
[  193.711265] scsi scan: INQUIRY result too short (5), using 36
[  193.711334] scsi scan: INQUIRY result too short (5), using 36

Sometimes I have seen this:
     [19318.339403] user_mad: process ibsrpdm did not enable P_Key index 
support.
     [19318.339406] user_mad:   Documentation/infiniband/user_mad.txt 
has info on the new ABI.

At server side this is the dmesg upon attempting a scan or srptools reload:
   [  177.072187] ib_srpt: Received SRP_LOGIN_REQ with i_port_id 
0x10056a6c6483000:0x3048c6a6540001, t_port_id 
0x3048c6a6560000:0x3048c6a6560000 and it_iu_len 260 on port 1 
(guid=0xfe80000000000000:0x3048c6a6560001)
   [  177.073302] ib_srpt: Session : kernel thread ib_srpt_compl (PID 
1831) started
   [  177.073395] scst: Using security group "ib_srpt_target_0" for 
initiator "0x010056a6c6483000003048c6a6540001"
   [  545.346591] ib_srpt: Received SRP_LOGIN_REQ with i_port_id 
0x10056a6c6483000:0x3048c6a6540001, t_port_id
0x3048c6a6560000:0x3048c6a6560000 and it_iu_len 260 on port 1 
(guid=0xfe80000000000000:0x3048c6a6560001)
   [  545.346601] ib_srpt: disconnected session 
0x010056a6c6483000003048c6a6540001 because a new SRP_LOGIN_REQ has been 
received.
   [  545.346663] ib_srpt: Received InfiniBand DREP message for cm_id 
ffff8803fe1d6400.
   [  545.346918] ib_srpt: Session 0x010056a6c6483000003048c6a6540001: 
kernel thread ib_srpt_compl (PID 1831) stopped
   [  545.347703] ib_srpt: Session : kernel thread ib_srpt_compl (PID 
1867) started
   [  545.347798] scst: Using security group "ib_srpt_target_0" for 
initiator "0x010056a6c6483000003048c6a6540001"

previous messages at server side:
[   19.756640] scst: Target 
iqn.2005-03.org.open-iscsi:e9ab3ed5f326:storage for template iscsi 
registered successfully
[   24.110204] scst: Device handler "dev_disk" for type 0 registered 
successfully
[   24.110209] scst: Device handler "dev_disk_perf" for type 0 
registered successfully
[   24.339840] scst: Virtual device handler vdisk_fileio for type 0 
registered successfully
[   24.339848] scst: Virtual device handler vdisk_blockio for type 0 
registered successfully
[   24.339852] scst: Virtual device handler vdisk_nullio for type 0 
registered successfully
[   24.339856] scst: Virtual device handler vcdrom for type 5 registered 
successfully
[   24.422358] dev_vdisk: Registering virtual vdisk_blockio device 
mydisk01 (NV_CACHE, BLOCKIO)
[   24.540969] dev_vdisk: Attached SCSI target virtual disk mydisk01 
(file="/dev/ram0", fs=14336MB, bs=512, nblocks=29360128, cyln=14336)
[   24.541005] scst: Attached to virtual device mydisk01 (id 1)
[   24.544239] scst: Added device mydisk01 to group Default (LUN 1, 
rd_only 0)
[   24.553126] scst: Added device mydisk01 to group Default (LUN 1, 
rd_only 0)
[   26.986164] scsi host2: ib_srp: new target: id_ext 003048c6a85c0000 
ioc_guid 003048c6a85c0000 pkey ffff service_id 003048c6a85c0000 dgid 
fe80:0000:0000:0000:0030:48c6:a85c:0001
[   26.986984] scsi host2: ib_srp: REJ received
[   26.986987] scsi host2:   REJ reason: stale connection
[   26.986999] scsi host2: ib_srp: retrying stale connection
[   26.987066] scsi host2: ib_srp: REJ received
[   26.987068] scsi host2:   REJ reason: stale connection
[   26.987078] scsi host2: ib_srp: retrying stale connection
[   26.987141] scsi host2: ib_srp: REJ received
[   26.987143] scsi host2:   REJ reason: stale connection
[   26.987149] scsi host2: ib_srp: retrying stale connection
[   26.987203] scsi host2: ib_srp: REJ received
[   26.987205] scsi host2:   REJ reason: stale connection
[   26.987210] scsi host2: ib_srp: giving up on stale connection
[   26.987211] scsi host2: ib_srp: Connection failed
[   26.989385] scsi host3: ib_srp: new target: id_ext 003048c6a8560000 
ioc_guid 003048c6a8560000 pkey ffff service_id 003048c6a8560000 dgid 
fe80:0000:0000:0000:0030:48c6:a856:0001
[   27.020034] [drm:radeon_i2c_put_byte] *ERROR* i2c 0x08 0x30 write failed
[   27.050538] scsi3 : SRP.T10:003048C6A8560000
[   27.051021] scsi scan: INQUIRY result too short (5), using 36
[   27.051228] scsi 3:0:0:1: Direct-Access     SCST_BIO 
ramdisk01         200 PQ: 0 ANSI: 5
[   27.051535] sd 3:0:0:1: Attached scsi generic sg2 type 0
[   27.051547] scst: Attached to scsi3, channel 0, id 0, lun 1, type 0
[   27.051632] sd 3:0:0:1: [sdc] 29360128 512-byte logical blocks: (15.0 
GB/14.0 GiB)
[   27.051635] sd 3:0:0:1: [sdc] 4096-byte physical blocks
[   27.051670] scsi scan: INQUIRY result too short (5), using 36
[   27.051876] sd 3:0:0:1: [sdc] Write Protect is off
[   27.051879] sd 3:0:0:1: [sdc] Mode Sense: 83 00 00 08
[   27.051997] sd 3:0:0:1: [sdc] Write cache: disabled, read cache: 
enabled, doesn't support DPO or FUA
[   27.053335]  sdc: unknown partition table
[   27.053834] sd 3:0:0:1: [sdc] Attached SCSI disk
[   27.060055] scsi host4: ib_srp: new target: id_ext 003048c6a6560000 
ioc_guid 003048c6a6560000 pkey ffff service_id 003048c6a6560000 dgid 
fe80:0000:0000:0000:0030:48c6:a656:0001
[   27.060804] ib_srpt: Received SRP_LOGIN_REQ with i_port_id 
0x10056a6c6483000:0x3048c6a6560001, t_port_id 
0x3048c6a6560000:0x3048c6a6560000 and it_iu_len 260 on port 1 
(guid=0xfe80000000000000:0x3048c6a6560001)
[   27.061883] ib_srpt: Session : kernel thread ib_srpt_compl (PID 1127) 
started
[   27.061978] scst: Using security group "ib_srpt_target_0" for 
initiator "0x010056a6c6483000003048c6a6560001"
[   27.062248] scsi4 : SRP.T10:003048C6A6560000
[   27.062667] scsi scan: INQUIRY result too short (5), using 36
[   27.062755] scsi scan: INQUIRY result too short (5), using 36
[   29.020191] scsi host5: ib_srp: new target: id_ext 003048c6a85c0000 
ioc_guid 003048c6a85c0000 pkey ffff service_id 003048c6a85c0000 dgid 
fe80:0000:0000:0000:0030:48c6:a85c:0001
[   29.022411] scsi5 : SRP.T10:003048C6A85C0000
[   29.022712] scsi scan: INQUIRY result too short (5), using 36
[   29.022843] scsi scan: INQUIRY result too short (5), using 36

This is my target side configuration:

# Automatically generated by SCST Configurator v2.0.0.

HANDLER vdisk_blockio {
         DEVICE mydisk01 {
                 filename /dev/ram0
                 nv_cache 1
         }
}

TARGET_DRIVER ib_srpt {
         TARGET ib_srpt_target_0 {
                 rel_tgt_id 2
                 enabled 1

                 GROUP Default {
                         LUN 1 mydisk01
                 }
         }
}

TARGET_DRIVER iscsi {
         enabled 1

         TARGET iqn.2005-03.org.open-iscsi:e9ab3ed5f326:storage {
                 rel_tgt_id 1
                 enabled 1

                 GROUP Default {
                         LUN 1 mydisk01
                 }
         }
}

Any ideas?

Thanks for your help