Storage LUN connected on Emulex / Qlogica HBA not detecting during boot time.

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博客围绕Red Hat Enterprise Linux 7系统中LUN启动时未检测问题展开。该系统使用Emulex和QLogic的HBA，启动时无法检测到连接的Storage LUNs，几分钟后设备自动检测到。解决方案是在SAN端明确设置端口速度以匹配HBA速度，并可使用相关方法检查HBA速度。

https://access.redhat.com/solutions/2754191

SOLUTION UNVERIFIED - 已更新 2017年六月15日14:59 -

English

环境

Red Hat Enterprise Linux 7
- Emulex LPe12000 PCIe Fibre Channel Adapter
QLogic Corp. ISP2532-based 8Gb Fibre Channel to PCI Express HBA

问题

Storage LUNs connected on Emulex or Qlogic HBA not detecting during boot time.
Device detect automatically after few minutes after server bootup.

决议

Explicitly set the port speed at SAN end to match with HBA speed.

诊断步骤

Check HBA speed using systool.

Raw

Class Device = "host2"
  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.1/host2/fc_host/host2"
    active_fc4s         = "0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 "
    dev_loss_tmo        = "30"
    fabric_name         = "0x10000027f885b773"
    issue_lip           = <store method only>
    max_npiv_vports     = "255"
    maxframe_size       = "2048 bytes"
    node_name           = "0x20000090fa52b83f"
    npiv_vports_inuse   = "0"
    port_id             = "0x824100"
    port_name           = "0x10000090fa52b83f"
    port_state          = "Online"
    port_type           = "NPort (fabric via point-to-point)"
    speed               = "4 Gbit"
    supported_classes   = "Class 3"
    supported_fc4s      = "0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 "
    supported_speeds    = "2 Gbit, 4 Gbit, 8 Gbit"
    symbolic_name       = "Emulex HP-LPe1205A FV2.03X6 DV10.2.8021.1"
    tgtid_bind_type     = "wwpn (World Wide Port Name)"
    uevent              =
    vport_create        = <store method only>
    vport_delete        = <store method only>

    Device = "host2"
    Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.1/host2"
      uevent              = "DEVTYPE=scsi_host"