my os version is:
  Operating System: CentOS Linux 7 (Core)
  CPE OS Name: cpe:/o:centos:centos:7
  Kernel: Linux 3.10.0-327.28.3.el7.x86_64
  Architecture: x86-64
and san storage is EMC VNX 5400 with double cisco mds 9148s.

actually i had problem with one of my switches and sent it to garanty guarantee. now i set it up again ... . but i get these errors from dmesg:
[20258845.245029] sd 12:0:0:16384: [sdf] Very big device. Trying to use READ CAPACITY(16).
[20258845.245454] sd 5:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16).
[20258845.246554] sd 12:0:1:16384: [sdg] Very big device. Trying to use READ CAPACITY(16).
[20258845.246650] sd 5:0:1:0: [sdc] Very big device. Trying to use READ CAPACITY(16).
[20258845.248915] sd 12:0:0:0: [sdd] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[20258845.248919] sd 12:0:0:0: [sdd] Sense Key : Illegal Request [current]
[20258845.248922] sd 12:0:0:0: [sdd] Add. Sense: Logical unit not supported
[20258845.249561] sd 12:0:1:0: [sde] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[20258845.249564] sd 12:0:1:0: [sde] Sense Key : Illegal Request [current]
[20258845.249565] sd 12:0:1:0: [sde] Add. Sense: Logical unit not supported
[20258845.285583] device-mapper: table: 253:14: multipath: error getting device
[20258845.286019] device-mapper: ioctl: error adding target to table

here is output of HBA configurations:

[root@compute52 host12]# multipath -ll
3600601604d003a00036edddd268de611 dm-2 DGC     ,VRAID          
size=2.0T features='1 retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:0      sdc 8:32  active ready  running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:0:0      sdb 8:16  active ready  running
==================================================
[root@compute52 host12]# systool -c fc_host
Class = "fc_host"

  Class Device = "host12"
    Device = "host12"

  Class Device = "host5"
    Device = "host5"
==================================================
[root@compute52 host12]# systool -c fc_host -v host12
Class = "fc_host"

  Class Device = "host12"
  Class Device path = "/sys/devices/pci0000:80/0000:80:01.0/0000:81:00.1/host12/fc_host/host12"
    dev_loss_tmo        = "16"
    fabric_name         = "0x20028c604f799791"
    issue_lip           = <store method only>
    max_npiv_vports     = "254"
    node_name           = "0x5001438033136e4f"
    npiv_vports_inuse   = "0"
    port_id             = "0x6e0200"
    port_name           = "0x5001438033136e4e"
    port_state          = "Online"
    port_type           = "NPort (fabric via point-to-point)"
    speed               = "8 Gbit"
    supported_classes   = "Class 3"
    supported_speeds    = "1 Gbit, 2 Gbit, 4 Gbit, 8 Gbit"
    symbolic_name       = "HPAJ764A FW:v7.03.00 DVR:v8.07.00.18.07.2-k"
    system_hostname     = ""
    tgtid_bind_type     = "wwpn (World Wide Port Name)"
    uevent              =
    vport_create        = <store method only>
    vport_delete        = <store method only>

    Device = "host12"
    Device path = "/sys/devices/pci0000:80/0000:80:01.0/0000:81:00.1/host12"
      fw_dump             =
      nvram               = "ISP "
      optrom_ctl          = <store method only>
      optrom              =
      reset               = <store method only>
      sfp                 = " "
      uevent              = "DEVTYPE=scsi_host"
      vpd                 = "�$"
===============================================

[root@compute52 host12]# systool -c fc_host -v host5
Class = "fc_host"

  Class Device = "host5"
  Class Device path = "/sys/devices/pci0000:80/0000:80:01.0/0000:81:00.0/host5/fc_host/host5"
    dev_loss_tmo        = "16"
    fabric_name         = "0x20018c604fec3441"
    issue_lip           = <store method only>
    max_npiv_vports     = "254"
    node_name           = "0x5001438033136e4d"
    npiv_vports_inuse   = "0"
    port_id             = "0x6d0200"
    port_name           = "0x5001438033136e4c"
    port_state          = "Online"
    port_type           = "NPort (fabric via point-to-point)"
    speed               = "8 Gbit"
    supported_classes   = "Class 3"
    supported_speeds    = "1 Gbit, 2 Gbit, 4 Gbit, 8 Gbit"
    symbolic_name       = "HPAJ764A FW:v7.03.00 DVR:v8.07.00.18.07.2-k"
    system_hostname     = ""
    tgtid_bind_type     = "wwpn (World Wide Port Name)"
    uevent              =
    vport_create        = <store method only>
    vport_delete        = <store method only>

    Device = "host5"
    Device path = "/sys/devices/pci0000:80/0000:80:01.0/0000:81:00.0/host5"
      fw_dump             =
      nvram               = "ISP "
      optrom_ctl          = <store method only>
      optrom              =
      reset               = <store method only>
      sfp                 = " "
      uevent              = "DEVTYPE=scsi_host"
      vpd                 = "�$"




On Sun, Jun 25, 2017 at 11:27 AM, Yaniv Kaul <ykaul@redhat.com> wrote:


On Sat, Jun 24, 2017 at 10:58 AM, Iman Darabi <iman.darabi@gmail.com> wrote:
hi.
i'm using ovirt version 4.0 .

I've created two LUNs.  firs lun is 2047GB and working properly as data domain. but when i try to add second lun  as second data domain, i get this error on server:

Jun 21 13:22:41 compute52 kernel: sd 12:0:0:16384: [sdf] Very big device. Trying to use READ CAPACITY(16).
Jun 21 13:22:41 compute52 kernel: sd 5:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16).
Jun 21 13:22:41 compute52 kernel: sd 12:0:1:16384: [sdg] Very big device. Trying to use READ CAPACITY(16).
Jun 21 13:22:41 compute52 kernel: sd 5:0:1:0: [sdc] Very big device. Trying to use READ CAPACITY(16).
Jun 21 13:22:41 compute52 kernel: sd 12:0:0:0: [sdd] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jun 21 13:22:41 compute52 kernel: sd 12:0:0:0: [sdd] Sense Key : Illegal Request [current]
Jun 21 13:22:41 compute52 kernel: sd 12:0:0:0: [sdd] Add. Sense: Logical unit not supported

Looks like an issue between your platforms (what version is it? You have not specified it) and your storage (what is it? You have not specified it), unrelated directly to oVirt.
 
Jun 21 13:22:41 compute52 kernel: sd 12:0:1:0: [sde] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jun 21 13:22:41 compute52 kernel: sd 12:0:1:0: [sde] Sense Key : Illegal Request [current]
Jun 21 13:22:41 compute52 kernel: sd 12:0:1:0: [sde] Add. Sense: Logical unit not supported
Jun 21 13:22:41 compute52 kernel: device-mapper: table: 253:16: multipath: error getting device
Jun 21 13:22:41 compute52 kernel: device-mapper: ioctl: error adding target to table
Jun 21 13:22:41 compute52 multipathd: dm-16: remove map (uevent)
Jun 21 13:22:41 compute52 multipathd: dm-16: remove map (uevent)

error shows that second lun is very big device, but i've created second lun as 10GB for test.

BTW: is there any good documentation for ovirt and FC in detail. all administration docs are using GUI ... .

What are you missing exactly?
Y.
 

--
R&D expert at Ferdowsi University of Mashhad
https://ir.linkedin.com/in/imandarabi

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--
R&D expert at Ferdowsi University of Mashhad
https://ir.linkedin.com/in/imandarabi